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“Heat stress activates molecular chaperones that help fold damaged proteins and maintain proteostasis, while heat therapy may also influence vascular and metabolic pathways relevant to cognitive aging. A prospective Finnish study followed 2,315 middle-aged men for a median of 20.7 years.”

“Beyond its role in sexual development, testosterone is important for overall health, influencing mood, energy levels, and even cognitive function. Testosterone is also a highly contested topic, especially in the context of resistance exercise, lifestyle, and managing low testosterone.”

“Dr. Gibala describes the World Fitness Calculator as a useful population-derived questionnaire estimate. It uses age, sex, activity, resting heart rate, and body-size measures, but its activity input is subjective and its output does not directly measure oxygen uptake.”

“Many testosterone boosting agents are on the market, but Dr. Phillips states they are ineffective, and it's better to focus on resistance exercise. In this clip, Dr. Stuart Phillips outlines steroid biochemistry and why he thinks testosterone boosters don't work.”

Breast milk is recommended as the exclusive source of nutrition for infants six months and younger.

“Family-controlled research provides another view. A Swedish cohort of 2.48 million children found small associations in conventional models, but the estimates moved to the null when siblings with different prenatal exposure were compared.”

“In a study of 54 adults with probable Alzheimer's disease and 54 age- and sex-matched controls, caffeine intake was lower in those with Alzheimer's disease (~70 mg/day) compared to those without the disease (~200 mg/day).”

“There's a lot of exciting research right now into aging and maximum lifespan, but scientists have really just scratched the surface of the fascinating topic of how to live longer, healthier lives. Relevant Publications Rootzén, Holger, and Dmitrii Zholud.”

“Choline is particularly important during pregnancy and breastfeeding, but some evidence suggests that choline supplementation could carry some risks. In this Aliquot, I talk about the science surrounding choline.”

“You may have first heard about Dr. Attia from his two interviews that have been on the Tim Ferriss show, or from any number of popular presentations he's given that were filmed and put online.”