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Dr. Rhonda Patrick answers audience questions on various health, nutrition, and science topics in this Q&A session.

“In this podcast, we discuss and critically analyze a recent headline-grabbing editorial that was published in the Annals of Internal Medicine that reviewed three studies on the topic of multivitamins and chronic disease prevention. We analyze the important shortcomings of the studies and talk about the mechanism.”

“The findings support working on several modifiable factors together, while leaving open how much each component contributes and whether these changes prevent an eventual Alzheimer's diagnosis.”

“Nitrites, used as preservatives in processed meats, can form cancer-causing nitrosamines when cooked or during digestion in the human colon. Nitrates, similar compounds found in plants, can also form nitrosamines but tend to form nitric oxide instead, due to the presence of vitamin C in the plants.”

“This is observational evidence and does not prove that morning timing caused the difference. Dr. Rhonda Patrick also describes observational reports linking coffee intake with DNA-methylation patterns and younger estimates from some epigenetic-aging measures.”

“Intravenous vitamin C has also been used in other viral diseases such as viral myocarditis and Ebstein-barr virus with mixed results. In this clip, Dr. Rhonda Patrick discusses the safety and side effects of intravenous vitamin C and describes the evidence supporting its use in treating COVID-19.”

“Randomized trials also provide a closer look at short-term biological effects. In 100 healthy adults, 500 milliliters of dark-roast coffee per day for four weeks reduced a blood-cell DNA strand-break marker by 23 percent from baseline compared with water.”

Dr. Ruth Patterson discusses the role of fasting in the prevention and survivorship of breast cancer.

“A May 2025 Nature paper showed taurine uptake may fuel aggressive myeloid leukemias in laboratory and mouse models, illustrating how nutrients beneficial to healthy tissues may also feed certain cancers.”

“The main ingredient-interaction evidence concerns polyphenol oxidase. A small controlled crossover study found that a high-PPO banana smoothie greatly reduced circulating flavan-3-ol metabolites compared with a low-PPO berry drink or capsule control.”