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In the population study “Milk Intake and Risk of Mortality and Fractures in Women and Men,” researchers following more than 100,000 men and women in Sweden for about 20 years found significantly higher rates of bone and hip fractures, heart disease, cancer, and premature death in general for women who drank more milk. Three glasses a day was associated with nearly twice the risk of dying early. Men with higher milk consumption were also recorded having a higher risk of premature death. A meta-analysis of all such cohort studies, however, failed to find a significant relationship between milk and mortality. Findings of a 2015 meta-analysis found that men with high intakes of dairy products—milk, low-fat milk, and cheese, but not nondairy sources of calcium—did appear to increase total prostate cancer risk.

All animal-based foods contain sex steroid hormones, such as estrogen. These hormones naturally found even in organic cow’s milk may play a role in the various associations identified between dairy products and hormone-related conditions, including acne, diminished male reproductive potential, and premature puberty. The hormone content in milk may explain why women who drink it appear to have five times the rate of twin births compared with women who do not drink milk.

When it comes to cancer, leading experts have expressed concern that the hormones in dairy and other growth factors could potentially stimulate the growth of hormone-sensitive tumors. Experimental evidence also suggests that dairy may also promote the conversion of precancerous lesions or mutated cells into invasive cancers in vitro.

Dairy consumption may also play a role in increased risk of asthma, Parkinson’s disease, and elevated blood pressure, among other health concerns such as recurring canker sores.

The information on this page has been compiled from Dr. Greger’s research. Sources for each video listed can be found by going to the video’s page and clicking on the Sources Cited tab. References may also be found at the back of his books.

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Soy Foods for Menopause Hot Flash Symptoms

Soy can be considered a first-line treatment for menopausal hot flash and night sweat symptoms.

Closeup soy bean in sack and white cup of soy milk with green nature background

Soy Milk for Vaginal Menopause Symptoms

Soy foods may explain why Japanese-American women not only have the lowest rates of hot flashes in the United States but also have the lowest rates of vaginal dryness.

Close up of person’s hands preparing meal with fresh veggies

The Best Diet for COVID and Long-COVID

Healthy plant-based diets appear to help reduce the risk of severe COVID-19 and getting infected in the first place, even independent of comorbidities.

Is Soy Milk the Most Nutritious Non-Dairy Milk?

Soy milk is compared to dairy milk and other plant-based milks.

Greens, Green Tea, and Nuts Put to the Test for Telomeres

Not all plant foods are linked to less cellular aging based on telomere attrition, and not all animal foods are linked to more.

Assortment of whole food plant-based foods

Fasting to Detox

How might we help flush the pollutants stored in our fat that come spilling out into our bloodstream during weight loss?

Pregnant person holding a white bowl of whole food

Plant-Based Pregnancy Outcomes and Breast Milk

The composition of breast milk is compared between vegetarian and nonvegetarian women.

Plant-Based Diet for Treating and Reversing Stage 3 Kidney Disease

I share a touching story of the power of plant-based eating for chronic kidney failure.

A Case of Stage 3 Cancer Reversal with Fasting

I go over a case report of water-only fasting, followed by a whole food, plant-based diet for follicular lymphoma.

English muffin with egg and processed meats

Dietary Guidelines: “Eat as Little Dietary Cholesterol as Possible”

Why do the official federal Dietary Guidelines for Americans recommend limiting the intake of dietary cholesterol (found mostly in eggs) as much as possible?

Round bowl of beans, greens, and other whole foods on a white surface

The Impacts of Plant-Based Diets on Breast Cancer and Prostate Cancer

Why do people who eat more plants get less breast and prostate cancer?

The Role of Endotoxins in Alzheimer’s and Dementia

Why can a single meal high in saturated fat impair cognition?

Treating Parkinson’s Disease with Fava Beans (Faba or Broad Beans)

Fava bean sprouts and soy nuts are put to the test for Parkinson’s disease as natural sources of L-dopa.

Potential Vitamin and Mineral Deficiency Risks on a Vegan Diet

What is the best way to get the nutrients of concern on a plant-based diet?

Fried egg with the yolk on a black background

Does Dietary Cholesterol (Eggs) Raise Blood Cholesterol?

Even nine out of ten studies funded by the egg industry show that eggs raise cholesterol.

Do Vegans Have Lower Bone Density and More Fractures?

What are the bone fracture rates of omnivores vs. vegetarians vs. vegans?

The Purported Benefits of Vitamin K2: Should You Take Supplements?

Our body can make vitamin K2 from the K1 in green leafy vegetables.

Do Alkaline Diets Help Athletic Performance?

Can reducing acid-forming foods and boosting alkaline-forming foods replicate the performance-enhancing effects of sodium bicarbonate without the adverse effects?

Antibiotic-Resistant E. coli and UTIs in Vegetarians vs. Meat-Eaters

Tainted chicken may result in more than a million urinary tract infections in American women every year.

Digital drawing of neurological functions

Advanced Glycation End Products (AGEs) and Cognitive Decline

AGEs may be one explanation for why those who consume meat may have up to three times the risk of developing dementia compared with vegetarians.

Digital illustration of human pelvic region

Lower Protein Diet Proven to Help Kidney Disease

How might we cut the risk of dialysis and death in half?

Woman choosing between salad and hamburger

How to Avoid the Boomerang Effect of Remedy Messaging

How can mandating healthy eating messaging on fast-food ads ironically make things worse?

Assorted fruits and vegetables on counter

How to Naturally Reduce Wrinkles with Food

Almonds are put to the test in a randomized controlled trial for facial wrinkles.

Selection of fruits, vegetables, and nuts

Dietary Approach to Naturally Treating Menopause Symptoms

Specific foods have been shown in randomized controlled trials to improve symptoms like hot flashes.

Foods That Cause and Help Halitosis (Bad Breath)

Most bad breath is due to the decay of sulfur-containing proteins.

Antibiotic Resistance Genes in the Guts of Vegetarians vs. Meat-Eaters

Those eating plant-based have a reduced load of antibiotic resistance genes in their gut.

Assortment of vegetables, dried beans, and berries

The Best Diet for Healthy Aging

Swapping just 1 percent of plant protein in place of animal protein was associated with signiﬁcantly less age-related deﬁcit accumulation.

The Best Diet for Treating Atrial Fibrillation

What foods should we eat and avoid to reduce our risk of Afib?

hot coffee and beans over a slate surface

Coffee Put to the Test for Treating Parkinson’s Disease

Coffee can improve Parkinson’s symptoms within three weeks compared to placebo, but do the benefits last?

How to Cultivate a Healthy Gut Microbiome with Food

Our gut flora is determined by what we eat, for good or for ill.

Animal Protein vs. Plant-Based Protein

I discuss a public health case for modernizing the definition of protein quality.

Saturated Fat Causes Artery and Lung Inflammation

What happens within hours of eating a high-fat meal?

Pesticides (DDT) and Alzheimer’s Disease

How can we avoid the breakdown product of pesticides that may increase the risk of Alzheimer’s disease as much as if you carried APOE e4, the so-called Alzheimer’s gene?

Why Don’t People Eat Healthier?

The so-called optimism bias may get in the way of a healthy lifestyle.

flatlay image of assorted cheese and milk

Breast Cancer and the Bovine Leukemia Virus in Meat and Dairy

Exposure to the bovine leukemia virus from meat and dairy (or a blood transfusion from those who eat meat or dairy) is a risk factor for cancer.

milk containers with bovine farm in the background

Bovine Leukemia Virus as a Cause of Breast Cancer

As many as 37 percent of breast cancer cases may be attributable to exposure to bovine leukemia virus.

uncooked white potatoes named whole and sliced over dark texture background

Do Potatoes Increase the Risk of High Blood Pressure and Death?

Do potato eaters live longer or shorter lives than non-potato eaters?

Fresh white potatoes on an old wooden table

Do Potatoes Increase the Risk of Diabetes?

Does the link between white potatoes and diabetes extend to non-fried potatoes without butter or sour cream?

spice and herb collection in bowls and spoons on a black wooden background

Which Foods Are Anti-Inflammatory?

Foods that reduce inflammation. What does an anti-inflammatory diet look like?

Milk, cottage cheese, sour cream and wheat on rustic wooden background

Foods That Cause Inflammation

Inflammatory markers can double within six hours of eating a pro-inflammatory meal. Which foods are the worst?

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