All Videos for Smoking

Vegetarians and Stroke Risk Factors—Vitamin D?

Could the apparent increased stroke risk in vegetarians be reverse causation? And what about vegetarians versus vegans?



Do Vegetarians Really Have Higher Stroke Risk?

The first study in history on the incidence of stroke of vegetarians and vegans suggests they may be at higher risk.



Modifiable Risk Factors and Comorbidities for Severe COVID-19 Infection

There are things you can do right now to reduce your risk of falling seriously ill and dying from this disease.



How to Lower Lp(a) with Diet

What to eat and what to avoid to lower the cardiovascular disease risk factor lipoprotein(a).



The Role of the Toxic Food Environment in the Obesity Epidemic

Implausible explanations for the obesity epidemic, such as sedentary lifestyles or lack of self-discipline, serve the needs of the manufacturers and marketers more than the public’s health and the interest in truth.



The Role of Corporate Influence in the Obesity Epidemic

Like the tobacco industry adding extra nicotine, the food industry employs taste engineers to accomplish a similar goal: maximize the irresistibility of their products.



The Role of Processed Foods in the Obesity Epidemic

The rise in the U.S. calorie supply responsible for the obesity epidemic wasn’t just about more food but a different kind of food.



What Are the Best Beverages?

A review of reviews on the health effects of tea, coffee, milk, wine, and soda.



What the New Blood Pressure Range Guidelines Mean

Natural approaches to lowering high blood pressure can work better than drugs because you’re treating the underlying cause, and can end up having only good side effects.



Effects of Marijuana on Weight Gain and Bone Density

Are the apparent adverse effects of heavy cannabis use on bone just due to users being skinnier?



Are Ancient Grains Healthier?

Ancient wheats like kamut are put to the test for inflammation, blood sugar, and cholesterol control.



Are Fortified Kids’ Breakfast Cereals Healthy or Just Candy?

The industry’s response to the charge that breakfast cereals are too sugary.



Evidence-Based Weight Loss – Live Presentation

In this live presentation, Dr. Greger offers a sneak peek into his book How Not to Diet.



Highlights from the 2020 Dietary Guidelines Hearing

I was honored to testify before the US government’s Dietary Guidelines Advisory Committee. Check out the video to see my speech and a few of my favorite excerpts.



Keto Diets: Muscle Growth and Bone Density

Ketogenic diets found to undermine exercise efforts and lead to muscle shrinkage and bone loss.



The Best Diet for Colon Cancer Prevention

What would happen within just two weeks if you swapped the diets of Americans with that of healthier eaters?



The Effects of Marijuana on Fertility and Pregnancy

Pregnant and breastfeeding women should probably be advised to either decrease, or where possible, cease cannabis use entirely. And, couples trying to conceive may also want to consider cutting down.



Is Orthorexia a Real Eating Disorder?

Tracing the source and legitimacy of a disorder purporting to describe an “unhealthy obsession with healthy eating.”



Pesticides in Marijuana

The biggest barrier to reducing toxic pesticides in cannabis is, not surprisingly, the cannabis industry itself.



Are Cannabis Edibles Safe?

What you have to know about the safety of marijuana edibles.



Does Marijuana Cause Lung Cancer?

On a puff-by-puff basis, cannabis smoke deposits four times more tar in the lungs than tobacco, but does this translate into increased cancer risk?



The Best Advice on Diet and Cancer

What does the best available balance of evidence say right now about what to eat and what to avoid to reduce your risk of cancer?



Smoking Marijuana vs. Using a Cannabis Vaporizer

Cannabis vapor has less tar, but may contain more ammonia. What happens to respiratory symptoms when regular users of joints, blunts, pipes, and bongs switch to a vaporizer?



Effects of Smoking Marijuana on the Lungs

There is unequivocal evidence that regular cannabis smoking causes acute lung inflammation, but what are the long-term consequences?



Marijuana Legalization and the Opioid Epidemic

What happened in states after medical marijuana laws were passed? Did opioid overdoses go up, stay the same, or go down?



Benefits of Beans for Peripheral Vascular Disease

Do legumes—beans, chickpeas, split peas, and lentils—work only to prevent disease, or can they help treat and reverse it as well?



Benefits of Blueberries for Blood Pressure May Be Blocked by Yogurt

What happened when researchers tried to tease out what’s in dairy that interferes with the health benefits of berries and tea?



Will Cannabis Turn Into Big Tobacco?

There are some serious public health concerns about the legalization of marijuana, but they’re probably not what you might expect.



Benefits of Blueberries for Artery Function

What is the optimum dose of wild blueberries to eat at a meal?



Does Marijuana Cause Permanent Brain Damage in Adults?

If you start smoking marijuana as an adult, how much cannabis is too much?



Does Marijuana Cause Permanent Brain Damage in Teens?

Is the American Academy of Pediatrics’ opposition to cannabis legalization just reefer madness revisited?



Do Any Benefits of Alcohol Outweigh the Risks?

What would happen if you effectively randomized people at birth to drink more or less alcohol their whole lives? Would they get more or less heart disease?



Is It Better to Drink a Little Alcohol Than None at All?

Even if alcohol causes cancer and there is no “French paradox,” what about the famous J-shaped curve, where excessive drinking is bad, but light drinkers appear to have lower mortality than abstainers?



Apple Peels Put to the Test for Chronic Joint Pain

Are the health benefits associated with apple consumption simply due to other healthy behaviors among apple-eaters?



Does Marijuana Cause Health Problems?

Every year, cannabis is estimated to result in two million years of healthy life lost due to disability. How much is that compared to alcohol and tobacco?



Is Marijuana Addictive?

The evidence clearly indicates that long-term marijuana use can lead to addiction, but are there negative consequences?



The Role of Pesticides and Pollution in Autism

What are the effects of smoking, pesticides, vaccine mercury, and air pollution on autistic spectrum disorder risk?



Should Pregnant Women Take Calcium Supplements to Lower Lead Levels?

What are the effects of sodium and calcium intake on blood lead levels in pregnant and breastfeeding women?



Talcum Powder and Fibroids

What role does diet and baby powder play in the development of fibroids and ovarian cancer?



Researching the Health Effects of Marijuana

Politics, prejudice, and pressure coming from both sides add to the complexity of cannabis research.