Nutrition Facts with Dr. Greger

A dive into what makes Camellia sinensis special and why one plant yields both black and green teas. Exploration of theanine and how tea shifts brain waves toward relaxed alertness. Research on using green tea as a mouthwash for plaque and bad breath is discussed. Studies linking tea drinking to longer life and tea’s antiviral immune-boosting effects are highlighted.

A deep dive into taurine: what it is, how our bodies make it, and why it shows up in energy drinks. Discussion of its antioxidant and muscle roles and surprising links to aging. Animal studies suggesting lifespan and healthspan benefits are highlighted, along with limits of current human evidence.

Discussion of how what you eat can change body odor and the role of internal chlorophyll from plant foods. Explanations of how infection and inflammation alter scent. Findings that meat consumption can worsen underarm smell compared with plant-based diets. Examination of concerns around aluminum in antiperspirants, shaving, and potential links to breast tissue exposure.

Wide-ranging nutrition questions get concise, evidence-based answers. Topics include vitamin C on meat-only diets, matcha lead concerns, and storing nuts to prevent rancidity. Discussion covers protein needs, very low LDL safety, benefits of purple kale, carb quality, sweetener moderation, flu vaccination, and statin decision-making.

Dr. Dennis, a senior research scientist who reviews clinical studies on ketogenic and low-carb diets. He compares keto to plant-based approaches for weight and body composition. He discusses keto’s effect on blood sugar and diabetes remission. He highlights impacts on LDL, coronary calcium, carb tolerance, and potential harmful metabolites.

A lively dive into how coffee may trigger cellular cleanup called autophagy and its ties to longevity. Discussion of coffee’s liver benefits and links to lower mortality. The episode compares roast, brew method, and milk on health compounds and warns about unfiltered coffee raising cholesterol. Practical cautions for certain conditions and caffeine effects on sleep and withdrawal are covered.

A deep dive into how different cooking methods affect vegetable antioxidants. A large study compares six cooking techniques across 20 vegetables. Microwaving preserves antioxidants best while boiling causes the biggest losses. Which vegetables gain or lose antioxidants with heat gets covered. Practical hacks for forming sulforaphane in crucifers, like chopping then waiting or adding mustard, are highlighted.

They investigate hormones in milk and how dairy becomes a concentrated source of estrogens and progesterone. Studies showing rapid hormone changes after drinking milk and links to acne, prostate and endometrial cancer are discussed. Research connecting dairy intake to altered female reproductive function and potential contaminant mechanisms is highlighted.

They break down why raw alfalfa sprouts and some seeds can carry salmonella and other bacteria. They compare contamination risks between sprouts, eggs, ground beef, and poultry. They explore links between contaminated chicken and E. coli urinary tract infections. They discuss pesticide spray water potentially spreading norovirus and ways to reduce produce microbial risk.

Dr. Christine Dennis, a senior research scientist, dives into alarming revelations about meat and dairy contaminants. She delves into the connection between Mycobacterium avium paratuberculosis (MAP) and sarcoidosis, highlighting its presence in U.S. dairy products. Dennis also discusses the controversial use of the carcinogenic drug carbadox in pigs, revealing industry resistance to its ban. Furthermore, listeners are introduced to shocking findings about the composition of hot dogs and fast-food burgers, raising questions about food safety.