Using sauna 4-7x per week lowered dementia risk by 66% & Alzheimer's risk by 65% after adjusting for diet/lifestyle.
This study included over 2,000 middle-aged men that were followed for 20 years. The results were adjusted for many possible confounding factors including baseline age, alcohol consumption, BMI, physical exercise, socioeconomic status, systolic blood pressure, smoking status, type 2 diabetes, previous heart attack, resting heart rate and serum low-density lipoprotein cholesterol.
One of the reasons I find this study so compelling even though it is associative data and does not establish causality is because the sauna activates heat shock proteins, which have been shown in countless animal studies to play a causal role in preventing Alzheimer’s disease and other neurodegenerative diseases.
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Anyone that follows me knows that I talk about saunas ALOT. I have a couple of videos where I discuss the effects of the sauna on longevity and in muscle mass and endurance. I discuss the role of heat shock proteins in both videos. I also have free reports with references covering all these topics that you can download on my website (foundmyfitness.com). Sauna longevity video: https://www.youtube.com/watch?v=eWKBsh7YTXQ Sauna muscle/endurance video: https://www.youtube.com/watch?v=aHOlM-wlNjM&t=1s