Nutrition and fitness (actually biology and physiology). Especially keto/carnivore WOE and intermittent fasting. Tens of problems I thought it was me were just the poorly way I've been eating all my life.
What kind of problems did you have that weren’t obviously nutrition/health related? Curious what your diet is and what we’re the benefits that you saw.
The most intriguing one I'd say is baldness. My hair stop falling and is actually regrowing in most parts of my head. I changed my diet to keto and then carnivore, also stopped eating 4, 5 times a day and try to do OMAD (one meal a day).