It’s all bull. The wellness-optimized seminars, the anti-cortisol lifestyle, the cold plunge, the red light, the instant consult, the peptide sh*t, all of it sold as a way to live longer. I’ve done human research for 33 years. Keep your money. None of it has been shown to make a human being live longer. A weighted vest worn about seven hours a day for a year did nothing to protect hip bone during weight loss (1). Growth hormone in healthy older adults shuffles a couple of kilos of body composition and hands you swollen ankles and sore joints, and likely you're going to live shorter (2). And that post-workout hormone “spike” people chase (or avoid - cortisol, much?) We tested it in my lab. Nothing for muscle, nothing for strength or muscle (3). Protein is my day job, so this one stings. A bit above the RDA helps, more so if you lift or you’re older. Past 1.6 g/kg a day the extra does next to nothing (4). More is just more. Hormones are a different conversation. Got symptoms? Hormone ...