Search results for cortisol

“Practicing healthy light exposure habits — seeking bright light in the morning and avoiding it in the evening — is crucial. When we eat also plays a role, and eating too close to bedtime disrupts sleep and shifts circadian timing over the next few days.”

“While ketogenic diets may not be optimal for adding muscle mass, they may be suitable for preserving muscle mass and improving other metabolic parameters, particularly during weight loss and fasting.”

“Acutely, however, caffeine can raise glucose or reduce insulin sensitivity in some people through sympathetic activation, so a short-term glucose response is not identical to the longer-term association. Timing provides the practical answer.”

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

“These changes increase infection risk, weaken vaccine responses, and reduce early cancer surveillance. Yet immune aging is not fixed. Movement, sleep, stress regulation, temperature exposure, and nutrition shape immune cell balance and inflammatory activity over time.”

“A healthy immune system allows the body to fight bacterial and viral infections, as well as aberrant cells, which, left unchecked can progress to cancer. Insulin-like growth factor 1 (IGF-1) has some beneficial functions but is also known to promote the growth of existing cancer cells.”

“Time-restricted eating, a form of fasting that limits the period during which a person eats to a 12- to 16-hour window, capitalizes on the benefits associated with both fasting and optimization of the body's circadian biology.”

“A systematic review in older adults linked Mediterranean dietary patterns with lower inflammatory markers, while a meta-analysis of randomized trials found that vitamin D supplementation reduced acute respiratory infection risk overall, with the strongest protection among people who were very deficient and received regular doses.”

“Multicomponent lifestyle programs combining physical activity, weight loss, sodium reduction, limited alcohol, and dietary changes lowered blood pressure more than advice alone, although the PREMIER trial cannot isolate one component’s effect.”

“In this FoundMyFitness interview clip with Dr. Rhonda Patrick, Dr. Layne Norton places creatine monohydrate in his highest evidence tier because it supports repeated high-intensity performance, strength, and gains in lean mass.”