Carnivore News & Studies

 2023

MAY 1, 2023

 

Meat is crucial for human health, scientists say as they call for end to the ‘zealotry’ pushing vegetarian and vegan diets

Almost 1,000 academics from leading universities across the world have signed an initiative which argues that livestock farming is too important to ‘become the victim of zealotry’.

APRIL 18, 2023

Ketogenic Diet as a Promising Non-Drug Intervention for Alzheimer’s Disease: Mechanisms and Clinical Implications

Alzheimer’s disease (AD) is a progressive neurodegenerative disorder that is mainly characterized by cognitive deficits.  Although many studies have been devoted to developing disease-modifying therapies, there has been no effective therapy until now.

Accumulating preclinical and clinical studies have shown that a ketogenic diet is beneficial to Alzheimer’s disease.  The potential underlying mechanisms include improved mitochondrial function, optimization of gut microbiota composition, and reduced neuroinflammation and oxidative stress.

FEBRUARY, 2023

Dietary carbohydrate quantity and quality and risk of cardiovascular disease, all-cause, cardiovascular and cancer mortality: A systematic review and meta-analysis

Increased consumption of dietary carbohydrate intake is associated with increased risk of cardiovascular disease, stroke, and all-cause mortality.

Linear relation was found for cardiovascular disease and stroke but non-linear relation for all-cause mortality.

Basically, dietary carbohydrate consumption was associated with higher rates of death from all causes, including heart disease and strokes.

FEBRUARY 13, 2023

Study Suggests Fructose Could Drive Alzheimer’s Disease

An evolutionary foraging instinct that relied on the sugar fructose may now be fueling the formation of Alzheimer’s disease, CU Anschultz researchers say.

Animals given fructose show memory lapses, a loss in the ability to navigate a maze and inflammation of the neurons.  “A study found that if you keep laboratory rats on fructose long enough, they get tau and amyloid beta proteins in the brain, the same proteins seen in Alzheimer’s disease.”

Johnson suspects the survival response, what he calls the “survival switch”, that helped ancient humans get through periods of scarcity is now stuck in the “on” position in a time of relative abundance.  “You can find high fructose levels in the brains of people with Alzheimer’s as well.”

The researchers noted that fructose reduces blood flow to the brain’s cerebral cortex involved in self-control, as well as the hippocampus and thalamus.  “Chronic and persistent reduction in cerebral metabolism driven by recurrent fructose metabolism leads to progressive brain atrophy and neuron loss with all of the features of Alzheimer’s disease.”

JANUARY 3, 2023

Diet in Early Life is Related to Child Mental Health and Personality at 8 Years: Findings from the Norwegian Mother, Father and Child Cohort Study (MoBa)

There is rising concern about population mental health and yet despite policies aimed at reducing mental health disorders, not much has changed in the past 20 years at the global level. Personality and mental health traits manifest early.  Sufficient nutrition is fundamental to early development.  Iodine, iron and long chain fatty acids are particularly important for brain development.

Results indicate that healthy diet early in life may impact mental health and personality development during childhood.  Positive associations between diet scores at almost all time points and extraversion, benevolence, conscientiousness and imagination.

 2022

DECEMBER 22, 2022

He puts seniors on meat, what happens next is amazing

Hal Cranmer has owned 4 assisted living homes for about 7 years in Phoenix, AZ.  They are having success with the carnivore diet and exercise with elderly patients.

NOVEMBER 14, 2022

Red Meat is Not a Health Risk.  A New Study Slams Years of Shoddy Research

Studies have been wrongly linking red meat consumption to health problems like heart disease, stroke, and cancer for years.  Nestled in the recesses of those published papers are notable limitations – nearly all the research is observational (no convincing causation).

In a new, unprecedented effort, scientists at the University of Washington’s Institute for Health Metrics and Evaluation (IHME) scrutinized decades of research on red meat consumption.  Their findings mostly dispel any concerns about eating red meat.

“We found weak evidence of association between unprocessed red meat consumption and colorectal cancer, breast cancer, type 2 diabetes and ischemic heart disease.  Moreover, we found no evidence of an association between unprocessed red meat and ischemic stroke or hemorrhagic stroke.”

NOVEMBER 2, 2022

A high-fiber diet synergizes with Prevotella copri and exacerbates rheumatoid arthritis

A high-fiber diet worsens rheumatoid arthritis (RA) via microbial alterations and intestinal inflammation.

Examining the gut microbiome of preclinical and established RA patients show alterations where Prevotella spp. are preferentially enriched in a subset of patients.  A high-fiber diet in the presence of RA and colonization of P. copri RA (an isolated Prevotella strain), exacerbated arthritis in patients.

Many people experience improvements in their autoimmune conditions through a carnivore diet by removing the unnecessary and inflammatory fiber.

OCTOBER 24, 2022

Scientists called on to sign ‘Dublin Declaration’ supporting balanced view on meat

Scientists from around the world have gathered in Dublin to examine claims regularly levelled against meat and livestock and to confront the simple question: What does the science say?

The unequivocal conclusion from two days of detailed presentations by scientific experts from Australia, the US and across Europe is that the highest standards of science do not justify or support the “simplistic and reductionist” war being waged against meat.

In fact, while challenges remain to minimise the livestock farming and meat sector’s environmental footprint, a clear theme of the many academic assessments presented in Dublin was that removing livestock and meat from landscapes and human diets would lead to potentially disastrous consequences for both.

OCTOBER 17, 2022

Neanderthals may have been carnivores, according to new study

A new study published on October 17 in the journal PNAS, led by a CNRS researcher, has for the first time used zinc isotope analysis to determine the position of Neanderthals in the food chain.  Their findings suggest that they were in fact carnivores. 

AUGUST 4, 2022

Statin therapy is not warranted for a person with high LDL-cholesterol on a low-carbohydrate diet

Extensive research has demonstrated the efficacy of the low carbohydrate diet to improve the most robust cardiovascular disease risk factors, such as hyperglycemia, hypertension, and atherogenic dyslipidemia.  

Our review of the literature indicates that statin therapy for both primary and secondary prevention of cardiovascular disease is not warranted for individuals on a low carbohydrate diet with elevated LDL-C who have achieved a low triglyceride/ HDL ratio.

JUNE 2, 2022

US National Cancer Institute: KETO Molecule Offers Clue for Preventing Colorectal Cancer

In a new study in mice, researchers have found evidence that a compound produced while eating a ketogenic diet – that is, a diet very high in fat and low in carbohydrates – could inhibit the development of colorectal cancer.  The compound, called B-hydroxybutyrate (BHB), jump-started a signaling pathway in epithelial cells in the colon that instructed them to stop dividing.  

“When we treated [colorectal cancer] cells with BHB, they didn’t die, but they seemed to start sleeping, basically” said Dr. Levy.

The study offers potentially important new insights into one of the most common cancers, said Phillip Daschner, M.Sc. of NCI’s Division of Cancer Biology.  “This is a significant contribution to our understanding of the link between diet and colon cancer risk.”

MAY, 2022

Increase of Human Milk Fat Inducing Nutritional Ketosis in Exclusively Breastfed Infant, Brought About by Treating the Mother with Ketogenic Dietary Therapy

Medicalized Ketogenic Therapy is commonly used to treat refractory epilepsy.  

Over 3 months we achieved a calorific increase of the mother’s mature milk by an additional 134%.  The infant was successfully put into nutritional ketosis and visible seizures eliminated !

Significantly increasing the mature mother’s own milk fat component could have implications for other areas, including faltering growth.

APRIL 28, 2022

Keto Diet Bettered Fatigue, Depression in MS – Quality of life, disability showed improvements in phase II study

A ketogenic diet was safe, tolerable, and provided clinical benefits to people with relapsing multiple sclerosis (MS), a phase II study found.

Relapsing MS patients enrolled in the 6-month prospective ketogenic intervention had significant reductions in fat mass and showed a nearly 50% decline in fatigue and depression scores, reported J. Nicholas Brenton, MD, of the University of Virginia in Charlottesville, at the American Academy of Neurology annual meeting, held in Seattle and online.

APRIL 27, 2022

B-Hydroxybutyrate Suppresses Colorectal Cancer

Colorectal cancer is among the most frequent forms of cancer, and new strategies for its prevention and therapy are urgently needed.

We perform a dietary screen in autochthonous animal models of colorectal cancer and find that ketogenic diets exhibit a strong tumour-inhibitory effect.

These properties of ketogenic diets are recapitulated by the ketone body B-hydroxybutyrate (BHB), which reduces the proliferation of colonic crypt cells and potently suppresses intestinal tumour growth.

MARCH 1, 2022

Comprehensive Management of Cardiovascular Risk Factors for Adults With Type 2 Diabetes: A Scientific Statement From the American Heart Association

Cardiovascular disease remains the leading cause of death in patients with diabetes. 

For those who are unable to adhere to a calorie-restricted diet, a low-carbohydrate diet reduces A1c and triglycerides. Very low–carbohydrate diets were effective in reducing A1c over shorter time periods (<6 months) with less differences in interventions ≥12 months.

FEBRUARY 22, 2022

Total Meat Intake is Associated with Life Expectancy: A Cross-Sectional Data Analysis of 175 Contemporary Populations

Worldwide, bivariate correlation analyses revealed that meat intake is positively correlated with life expectancies. This relationship remained significant when influences of caloric intake, urbanization, obesity, education and carbohydrate crops were statistically controlled. Stepwise linear regression selected meat intake, not carbohydrate crops, as one of the significant predictors of life expectancy. In contrast, carbohydrate crops showed weak and negative correlation with life expectancy.

If meat intake is not incorporated into nutrition science for predicting human life expectancy, results could prove inaccurate.

FEBRUARY 22, 2022

Meat-eating extends human life expectancy worldwide

“Our team broadly analysed the correlations between meat eating and life expectancy, and child mortality, at global and regional levels, minimising the study bias, and making our conclusion more representative of the general health effects of meat eating.”

The researchers found that the consumption of energy from carbohydrate crops (grains and tubers) does not lead to greater life expectancy, and that total meat consumption correlates to greater life expectancy, independent of the competing effects of total calories intake, economic affluence, urban advantages, and obesity.

“Meat of small and large animals provided optimal nutrition to our ancestors who developed genetic, physiological, and morphological adaptations to eating meat products and we have inherited those adaptations,” Professor Henneberg says.

FEBRUARY 1, 2022

Consuming red meat and processed meats does not raise risk for death, recurrence in colon cancer

This study was conducted among 1011 patients with stage III colon cancer, for up to 8 years!

In this cohort study, postdiagnosis intake of unprocessed red meat or processed meat was not associated with risk of recurrence or death among patients with stage III colon cancer.

JANUARY 21, 2022

Canada’s oldest woman, a lifelong learner and traveller, dies at 114 in Côte-St-Luc

Klein attributed her longevity to good genes — her great-grandmother lived until 103 — and a diet of red meat, her daughter joked.

“She loved her steak; she definitely had lots of good red meat,” Nussbaum said.

JANUARY 18, 2022

Women’s Health at Risk due to Rise in Meat-Free Diets, Scientist Says

Young women who consume little to no red meat and dairy are at risk of developing vitamin deficiencies that could lead to health problems later in life, a scientist has said.

Professor Ian Givens, director of the Institute for Food, Nutrition and Health at Reading University, told a briefing at the Science Media Centre that half of young women aged between 11 and 18 were consuming below the minimum recommended level of iron and magnesium.

JANUARY 13, 2022

United States Dietary Trends Since 1800: Lack of Association Between Saturated Fatty Acid Consumption and Non-communicable Diseases

As observed from the food availability data, processed and ultra-processed foods dramatically increased over the past two centuries, especially sugar, white flour, white rice, vegetable oils, and ready-to-eat meals. These changes paralleled the rising incidence of NCDs, while animal fat consumption was inversely correlated.

JANUARY 10, 2022

COVID restrictions eased for food supply chain workers

COVID restrictions are being eased for workers in the food supply chain in an effort to ensure supermarkets can restock their shelves.

JANUARY 7, 2022

Australians warned of food shortages due to COVID-19

Australians are being warned to expect food shortages for the foreseeable future, with thousands of supply chain workers in COVID-enforced isolation.

JANUARY 5, 2022

Consumption of minimal and unprocessed foods (high in natural saturated fats) has favourable effects on HDL cholesterol in children.

Effect of a dietary intervention including minimal and unprocessed foods, high in natural saturated fats, on the lipid profile of children, pooled evidence from randomized controlled trials and a cohort study.

JANUARY 4, 2022

Meat industry warns food shortages imminent unless workers can access rapid antigen testing

Meat Industry Council CEO Patrick Hutchinson has called it an “emergency” situation right now.

 2021

OCTOBER 9, 2021

Big hitters bullish about new meat co-op to revive mothballed abattoir in WA’s northwest

“It doesn’t make a lot of sense to ship cattle 2,000 kilometres down south to be processed”…”It is important because transportation and all the stress [on the animals] could be minimised.” – Bruce Cheung

OCTOBER 8, 2021

Meat prices rising due to shortages across Australia

OCTOBER 7, 2021

Shortage of beef leading to higher prices in lead up to Christmas

DECEMBER 18, 2021

New report gives red meat a clean bill of health

RED MEAT has been the victim of ‘information terrorism’, unfairly and dishonestly condemned as a threat to human health.  

That is the conclusion of a bombshell scientific report that dismantles the last five years of anti-meat propaganda, and questions the motives and the money behind the modern demonisation of livestock farming.

Compiled by an international group of scientists, led by Professor Alice Stanton of the Royal College of Surgeons in Ireland, the paper ‘Consumption of Unprocessed Red Meat Is Not a Risk to Health’…

The Stanton report pulls together multiple peer-reviewed studies of unprocessed meat consumption…

NOVEMBER 2, 2021

Oxford Academic – Behavioral Characteristics and Self-Reported Health Status among 2029 Adults Consuming a “Carnivore Diet”

Participants reported high levels of satisfaction and improvements in overall health (95%), well-being (66%-91%), various medical conditions (48%-98%), and median [IQR] BMI…

Prevalence of adverse symptoms was low (<1% to 5.5%). 

Contrary to common expectations, adults consuming a carnivore diet experienced few adverse effects and instead reported health benefits and high satisfaction. 

OCTOBER 20, 2021

The Harvard Gazette – This is your body on carbs, in real time

Researchers watched as cells tapped ‘master antioxidant’ to help store excess carbs as fats, allowing cell damage.

A high body mass index (BMI) is closely correlated with insulin resistance and Type 2 diabetes. For decades, nutrition guidelines have emphasized the necessity of decreasing intake of dietary fats. Yet, even as studies demonstrate ties between foods laden with simple carbohydrates and metabolic dysfunction, much remains unknown about how the body processes large amounts of carbohydrates eaten in a single meal.

“If [carbohydrate] overfeeding isn’t controlled, some of the traditional ways of treating diabetes, like giving patients more insulin to lower blood sugar, can potentially be more harmful.”

SEPTEMBER 28, 2021

Effects of a low-carbohydrate diet on insulin-resistant dyslipoproteinemia—a randomized controlled feeding trial

Carbohydrate restriction shows promise for diabetes, but concerns regarding high saturated fat content of low-carbohydrate diets limit widespread adoption.

A low-carbohydrate diet, high in saturated fat, improved insulin-resistant dyslipoproteinemia and lipoprotein(a), without adverse effect on LDL cholesterol. Carbohydrate restriction might lower CVD risk independently of body weight, a possibility that warrants study in major multicentered trials powered on hard outcomes.

SEPTEMBER 26, 2021

Food myths busted: dairy, salt and steak may be good for you after all

The grave effects of this relatively recent departure from time-honoured eating habits comes as no surprise to those of us who never swallowed government “healthy eating” advice in the first place, largely on evolutionary grounds.

Although meat has been a central component of ancestral diets for millions of years, some nutrition authorities, often with close connections to animal rights activists or other forms of ideological vegetarianism, promote the view that it is an unhealthy food.

SEPTEMBER 23, 2021

Ruminant fat intake improves gut microbiota, serum inflammatory parameter and fatty acid profile in tissues of Wistar rats

Less fatty liver, better inflammation markers and a more favourable gut microbiota.

“…it is remarkable that ruminant fat reversed the hepatic steatosis normally caused by high fat diets, which may be related to the remodelling of the gut microbiota and its potential anti-inflammatory activity.”

SEPTEMBER 22, 2021

Dangerous levels of PFAS chemicals have been found in cattle from contaminated ‘red zones’

AUGUST 11, 2021

UN wants to ban more than one bite of meat a day

AUGUST 10, 2021

United Nations’ call to slash red meat consumption to just 14g is ‘absurd’

AUGUST 4, 2021

Proposed carbon tax could see Australians paying up to 15% more for red meat

JULY 7, 2021

Paper concludes cutting meat won’t reduce a person’s carbon footprint much

Lifetime Climate Impacts of Diet Transitions: A Novel Climate Change Accounting Perspective

Using New Zealand consumption-based emission estimates as context, transitions to these hypothetical diets may reduce an average individual’s lifetime warming contribution from consumption-based activities by 2 to 4%.

JULY, 2021

Meat consumption and risk of incident dementia: cohort study of 493,888 UK Biobank participants

Intake of each additional 50 grams of unprocessed red meat (total intake of unprocessed beef, lamb, and pork) per day was associated with a 19% lower risk of all dementias and a 30% lower risk for Alzheimer’s disease.

JUNE 30, 2021

Consumption of Unprocessed Red Meat
Is Not a Risk to Health

A synopsis of five significant, recent and broad-scale scientific investigations on the health risks and health
benefits of red meat consumption indicates that there is no convincing scientific evidence for assertions about
harmful health effects of unprocessed red meat intake. If at all, the data very slightly lean toward an
association of red meat consumption and protective health benefits.

As there are no risks to general health to be expected, the consumption of unprocessed red meat at today’s common levels should therefore be encouraged for all population
groups as a significant source of dense and readily bio-available proteins, essential micro-nutrients and critically important bioactive substances…

JUNE 21, 2021

Very-low-carbohydrate diet enhances human T-cell immunity through immunometabolic reprogramming

Western diet is increasingly recognized as a true endangerment to public health. It accounts for a rapid increase in obesity, diabetes, cardio- and neurovascular diseases, and even cancer. Chronic low-grade inflammation induced by both adipose tissue and forced dietary uptake of carbohydrates is considered a main driver of these conditions. The resulting unspecific activation of the innate immune system is not only harmful in itself, but also strongly impairs adaptive immune responses and hampers the ability to create immunological memory. 

Our study demonstrates that the high-fat low-carbohydrate ketogenic diet (KD) induces a fundamental immunometabolic reprogramming in human T cells associated with profound transcriptomic changes. This leads to a balanced global enhancement of T-cell immunity, comprising enhanced cytokine production and secretion, strengthened cell lysis capacity, amplified Treg differentiation, and pronounced Tmem cell formation. KD thus holds promise as a feasible and effective clinical tool for a large range of conditions intimately associated with immune disorders. 

JUNE, 2021

Growth, body composition, and cardiovascular and nutritional risk of 5- to 10-y-old children consuming vegetarian, vegan, or omnivore diets

Plant-based diets (PBDs) are increasingly recommended for human and planetary health. However, comprehensive evidence on the health effects of PBDs in children remains incomplete, particularly in vegans.

Vegan diets were associated with a healthier cardiovascular risk profile but also with increased risk of nutritional deficiencies and lower BMC and height. Vegetarians showed less pronounced nutritional deficiencies but, unexpectedly, a less favorable cardiometabolic risk profile. Further research may help maximize the benefits of PBDs in children.

CLA – Refer to further reading on cardiovascular testing and assessment measures – all is not what it seems.
https://www.youtube.com/watch?v=j-nq60_oEIc

MAY 31, 2021

Mendelian randomization analyses show that higher acetyl-carnitine and carnitine levels in blood protect against severe Covid19

Severe Covid19 is characterised by a hyperactive immune response. Carnitine, an essential nutrient, and it’s derivative acetyl-carnitine can downregulate proinflammatory cytokines and has been suggested as a potential treatment for the disease.

We found evidence of a protective effect against very severe Covid19 for both carnitine and acetyl-carnitine, with around a 40% reduction in risk associated with a doubling of carnitine or acetyl-carnitine, and evidence of protective effects on hopitalisation with Covid19. For acetyl-carnitine the largest protective effect was seen in the comparison between those hospitalised with Covid19 and those infected but not hospitalised.

CLA – Animal products contain carnitine, with red meat having the highest levels.  A 4 oz beef steak has an estimated 56 -162 mg of carnitine.

MAY 31, 2021

Ketogenic Metabolic Therapy, Without Chemo or Radiation, for the Long-Term Management of IDH1-Mutant Glioblastoma: An 80-Month Follow-Up Case Report

The patient refused standard of care (SOC) and steroid medication after initial diagnosis, but was knowledgeable and self-motivated enough to consume a low-carbohydrate ketogenic diet consisting mostly of saturated fats, minimal vegetables, and a variety of meats.

This is the first report of confirmed IDH1-mutant GBM treated with Ketogenic metabolic therapy (KMT) and surgical debulking without chemo- or radiotherapy. The long-term survival of this patient, now at 80 months, could be due in part to a therapeutic metabolic synergy between KMT and the IDH1 mutation that simultaneously target the glycolysis and glutaminolysis pathways that are essential for GBM growth.

MAY 3, 2021

The $15 billion beef industry ‘has lifted’ us out of the Covid recession

APRIL 4, 2021

For 2 million years, humans ate meat and little else — study

Tel Aviv University researchers says Stone Age humans were apex predators, only moved to more plant-based diet 85,000 years ago.

“So far, attempts to reconstruct the diet of stone-age humans were mostly based on comparisons to 20th-century hunter-gatherer societies,” explained fellow TAU researcher Miki Ben-Dor. “This comparison is futile, however, because two million years ago hunter-gatherer societies could hunt and consume elephants and other large animals – while today’s hunter-gatherers do not have access to such bounty.”

 2020

DECEMBER 8, 2020

Fructose Metabolism in Cancer

The interest in fructose metabolism is based on the observation that an increased dietary fructose consumption leads to an increased risk of obesity and metabolic syndrome.  There is clinical and experimental evidence that an increased fructose intake promotes cancer growth.  The precise mechanism in which fructose induces tumour growth is still not fully understood.

This article presents an overview of the metabolic pathways that utilise fructose and how fructose metabolism can sustain cancer cell proliferation.

JULY 30, 2020

Littleproud defends Australian meat industry against UN attacks

The Australian Government completely rejects claims from the United Nations (UN) that the meat industry, particularly in Australia, is driving climate change, water depletion and deforestation.

“Urging people to ‘eat less meat’ based on an ideological agenda is nothing short of hypocritical and disgraceful.”

“Meat continues to be an essential food item for people around the world regardless of income level, and we will need to produce even more meat if we have any hope of creating a food-secure future, not less.”

JULY 3, 2020

Testosterone levels show steady decrease among young US men

The decline in total testosterone was observed even among men with normal body mass index.

From 1999 to 2016, testosterone levels have declined in adolescent and young adult men (AYA), according to results presented at the 2020 American Urological Association Virtual Experience.

CLA – Refer to study from March 1983 below outlining the decrease of serum total and free testosterone during a low-fat high-fibre diet.

MAY 29, 2020

Red Meat Intake and Cardiometabolic Disease Risk: An Assessment of Causality Using The Bradford Hill Criteria

Higher red meat intake is associated with increased risk of cardiometabolic diseases, but causation of this relationships is unclear. This umbrella systematic review qualitatively assessed causality between red meat intake and cardiometabolic diseases.

Weakness of associations between total and unprocessed red meat intake and cardiometabolic diseases and lack of coherence with short-term experimental evidence on cardiometabolic disease risk factors reduces confidence that associations are causal.

FEBRUARY 6, 2020

Processed meat intake and incidence of colorectal cancer: a systematic review and meta-analysis of prospective observational studies

The objective was to use accumulated evidence to explore the association between processed meat intake and risk of colorectal cancer (CRC) and to investigate the reliability of associations by evaluating patterns of risk by study population characteristics and research quality parameters. 

The overall judgment showed that two out of 29 studies had a moderate risk of bias, 25 had a serious risk of bias, and 2 had a critical risk of bias. The bias domains most often rated critical were bias due to risk of confounding, bias due to missing data, and selective outcome reporting bias. Although this meta-analysis indicates a modest association between processed meat intake and an increased risk of CRC, our assessment of internal validity warrants a cautious interpretation of these results, as most of the included studies were judged to have serious or critical risks of bias.

JANUARY 21, 2020

People in Hong Kong Have the Longest Life Expectancy in the World: Some Possible Explanations

CLA – Hong Kong has one of the highest meat consumption per capita in the world at 664 g per day.  People in Hong Kong especially enjoy pork and beef, consuming FOUR TIMES the UK’s average daily consumption amount.

 ARCHIVE

NOVEMBER 19, 2019

Unprocessed Red Meat and Processed Meat Consumption: Dietary Guideline Recommendations From the Nutritional Recommendations (NutriRECS) Consortium

The panel suggests that adults continue current unprocessed red meat consumption. Similarly, the panel suggests adults continue current processed meat consumption.

SEPTEMBER 5, 2019

Should dietary guidelines recommend low red meat intake?

Mainstream dietary recommendations now commonly advise people to minimize the intake of red meat for health and environmental reasons. Most recently, a major report issued by the EAT-Lancet Commission recommended a planetary reference diet mostly based on plants and with no or very low (14 g/d) consumption of red meat. We argue that claims about the health dangers of red meat are not only improbable in the light of our evolutionary history, they are far from being supported by robust scientific evidence.

MARCH 29, 2019

Intake of Meat, Fish, Fruits, and Vegetables and Long-Term Risk of Dementia and Alzheimer’s Disease

Analysis of 5,934 volunteers 65 years and over, followed every 2 to 4 years for 12 years.

During this time period, 662 cases of dementia, including 466 of Alzheimer’s disease, were identified.

Very low meat consumption increases the long-term risk of dementia and Alzheimer’s disease.

AUGUST, 2018

Red meat and colon cancer: A review of mechanistic evidence for heme in the context of risk assessment methodology

IARC identified heme as one meat component that could theoretically be responsible for initiation or promotion of cancer.

Mechanisms by which ingestion of red meat might be linked to human colorectal cancer, were critically assessed.  Methodology employed in studies used for extrapolation to human health risk was critically evaluated.

Studies have not provided sufficient evidence that heme would contribute to an increased risk of colon cancer.

 

2017 – 2018

IARC Monograph on red meat & processed meat – Materials and methods assessment

The consumption of meat, particularly red meat has been facing a decrease in the last decades, as is frequently associated with poor outcomes, such as the development of cancer and cardiovascular diseases. Recently, a working group of WHO, the IARC, evaluated the carcinogenicity of red meat and processed meat. They classified red meat as probably carcinogenic to humans (group 2A) and processed meat as carcinogenic to humans (group 1). The release of the press headline, before in 2015 led to an anxiety and concern from part of the population, that believed an effective way to prevent cancer was stopping eating meat. However, red meat has a rich nutritional composition, providing essential nutrients throughout the life cycle, in a well absorbable form, such as protein, iron, zinc, B complex vitamins and vitamin D.
 
The carcinogenicity of red meat classified by IARC was based on limited evidence…

NOVEMBER 4, 2017

Associations of fats and carbohydrate intake with cardiovascular disease and mortality in 18 countries from five continents (PURE): a prospective cohort study

Study of 135,000 people finds high carbohydrate diets have the highest mortality and high fat diets the lowest mortality.  The total fat intake was not associated with heart disease.
 
High carbohydrate intake was associated with higher risk of total mortality, whereas total fat and individual types of fat were related to lower total mortality. Total fat and types of fat were not associated with cardiovascular disease, myocardial infarction, or cardiovascular disease mortality, whereas saturated fat had an inverse association with stroke. Global dietary guidelines should be reconsidered in light of these findings.

JANUARY 1, 2017

Association between red meat consumption and colon cancer: A systematic review of experimental results

A role for red and processed meat in the development of colorectal cancer has been proposed based largely on evidence from observational studies in humans, especially in those populations consuming a westernized diet. Determination of causation specifically by red or processed meat is contingent upon identification of plausible mechanisms that lead to colorectal cancer. We conducted a systematic review of the available evidence to determine the availability of plausible mechanistic data linking red and processed meat consumption to colorectal cancer risk.

…there is currently insufficient evidence to confirm a mechanistic link between the intake of red meat as part of a healthy dietary pattern and colorectal cancer risk.

DECEMBER 29, 2016

Vegetarian diet and all-cause mortality: Evidence from a large population-based Australian cohort – the 45 and Up Study

The vegetarian diet is thought to have health benefits including reductions in type 2 diabetes, hypertension, and obesity. Evidence to date suggests that vegetarians tend to have lower mortality rates when compared with non-vegetarians, but most studies are not population-based and other healthy lifestyle factors may have confounded apparent protective effects. The aim of this study was to evaluate the association between categories of vegetarian diet (including complete, semi and pesco-vegetarian) and all-cause mortality in a large population-based Australian cohort. 

We found no evidence that following a vegetarian diet, semi-vegetarian diet or a pesco-vegetarian diet has an independent protective effect on all-cause mortality.

DECEMBER 9, 2015

Mortality in vegetarians and comparable nonvegetarians in the United Kingdom

Vegetarians and others who do not eat meat have been observed to have lower incidence rates than meat eaters of some chronic diseases, but it is unclear whether this translates into lower mortality.

The purpose of this study was to describe mortality in vegetarians and comparable nonvegetarians in a large United Kingdom cohort.

There was no significant difference in overall (all-cause) mortality between the diet groups of low meat eaters, fish eaters, and vegetarians compared with regular meat eaters.

MAY 5, 2015

Red Meat and Colorectal Cancer: A Quantitative Update on the State of the Epidemiologic Science

The potential relationship between red meat consumption and colorectal cancer (CRC) has been the subject of scientific debate. Given the high degree of resulting uncertainty, our objective was to update the state of the science by conducting a systematic quantitative assessment of the epidemiologic literature.

In the current meta-analysis of red meat intake and colorectal cancer, we comprehensively examined associations by creating numerous sub-group stratifications, conducting extensive sensitivity analyses, and evaluating dose-response using several different methods. Overall, all summary associations were weak in magnitude with no clear dose-response patterns.

AUGUST, 2014

The role of red and processed meat in colorectal cancer development: a perspective

Recent nutritional recommendations include reducing intake of red and processed meat to reduce cancer risk, in particular colorectal cancer (CRC). Epidemiological and mechanistic data on associations between red and processed meat intake and CRC are inconsistent and underlying mechanisms are unclear.

JANUARY 21, 2012

A meta-analysis of randomized controlled trials that compare the lipid effects of beef versus poultry and/or fish consumption

Changes in the fasting lipid profile were not significantly different with beef consumption compared with those with poultry and/or fish consumption. Inclusion of lean beef in the diet increases the variety of available food choices, which may improve long-term adherence with dietary recommendations for lipid management.
 

MARCH 9, 2007

Effects of replacing meat with soyabean in the diet on sex hormone concentrations in healthy adult males – Soy Decreases Testosterone

Forty-two healthy adult males aged 35–62 years were studied. Diets were isoenergetic, with either 150 g lean meat or 290 g tofu daily providing an equivalent amount of macronutrients, with only the source of protein differing between the two diets.
 
…the mean testosterone:oestradiol value was 10 % higher (P=0·06) after the meat diet… Thus, replacement of meat protein with soyabean protein, as tofu, may have a minor effect on biologically-active sex hormones, which could influence prostate cancer risk.
 

APRIL, 2006

Partial substitution of carbohydrate intake with protein intake from lean red meat lowers blood pressure in hypertensive persons

Within the context of other studies, these results suggest that modest substitution of carbohydrate-rich foods with protein-rich foods may lower blood pressure in hypertensive persons.
 

OCTOBER, 1999

Diet and risk of colorectal cancer in a cohort of Finnish men

Based on previous epidemiological studies, high fat and meat consumption may increase and fibre, calcium, and vegetable consumption may decrease the risk of colorectal cancer.  We sought to address these hypotheses in a male Finnish cohort.

In this cohort of men consuming a diet high in fat, meat, and fibre and low in vegetables, high calcium intake was associated with lowered risk of colorectal cancer.

NOVEMBER, 1984

A comparison of the effect of diets containing beef protein and plant proteins on blood lipids of healthy young men

The results of the study indicated that the ingestion of a diet in which 55% of the protein was supplied by beef protein was not associated with a hypercholesterolemic effect in healthy normolipidemic young men.

MARCH, 1983

Decrease of serum total and free testosterone during a low-fat high-fibre diet

The concentrations of serum total and free testosterone were studied in 30 healthy, middle-aged men during a dietary intervention program. When men were transferred from their customary diet to an experimental diet, which contained less fat with a higher polyunsaturated/saturated ratio (P/S-ratio) and more fibre, there was a significant decrease in serum total testosterone concentrations (22.7 +/- 1.2 vs 19.3 +/- 1.1 nmol/l SEM, P less than 0.001). Furthermore, serum free, unbound testosterone fell from 0.23 +/- 0.01 to 0.20 +/- 0.01 nmol/l SEM (P less than 0.01). The hormonal changes were reversible. This observation suggests that testosterone activity in plasma can at least partly be modified by changing the composition of the diet.