A scientist tested 15 longevity hacks. 3 weren't worth the money, including a gut health test.
Briefly

John Tregoning, a research scientist, explored 15 longevity hacks to enhance health and potentially extend lifespan as he faced his mortality in his mid-40s. He documented these experiences in his book, trying various approaches like calorie restriction, cold water swimming, gene sequencing, and healthier eating habits. While some methods like calorie restriction helped him lose weight, it impacted his social life negatively. Tregoning found microbiome testing particularly unhelpful, illustrating a gap between marketing claims and scientific knowledge about gut health.
"Despite the growing popularity of microbiome testing, I found it to be a waste of money since much about gut health remains unknown to researchers."
"Calorie restriction proved effective for weight loss, yet it often restricted my social life, highlighting the balance needed for sustainable health strategies."
Read at Business Insider
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