Results vary so widely in this field. My general understanding is: • Polyunsaturated fats, the supposedly "good" fats in the classical model, actually go ranci

Results vary so widely in this field. My general understanding is: • Polyunsaturated fats, the supposedly "good" fats in the classical model, actually go rancid really easily and cause damage. • Saturated fats are associated with high cholesterol, which is a marker of some misunderstood kind of arterial and vascular inflammation. Not everyone gets an increase in cholesterol from consuming saturated fats, and we don't know why. It may be determined by the intestinal flora. But these "bad" fats are actually very stable, and do not appear to cause damage via oxidation as they don't go rancid easily. • Monounsaturated fats have the best qualities of both. tl;dr (imho): Have some of everything in moderation and with the due awareness of what you're having vs. your particular body. Consume limited PUFA and be very aware of the potential rancidness vs. the effectiveness of antioxidants present in the source. Whole foods with antioxidants e.g. fruits tend to mitigate the oxidation of any PUFA that they contain. Consume limited saturated fat as per your propensity for LDL. You can't go wrong with monounsaturated fats, which are relatively stable and tend to come in high-antioxidant sources, and also do not cause LDL to rise. But overall, eat a moderate amount of fat. Don't go too low carb as it causes a stress state (cortisol + damage-inducing free fatty acids). Get your carbs from buffered, whole food sources (e.g. fruits, whole wheat bread), but don't go high carb because it's damaging. Have as much fiber (incl. resistant starches / FOS / FODMAP / "soluble fiber") as you can stomach. If they make you feel especially sick, you probably have gut fermentation (SIBO or similar). Some people like myself cannot tolerate anything fermentable. Be aware of your idiosyncrasies, e.g. I can't tolerate histamines, so I must avoid high histamine or histamine-releasing foods like avocado, as well as anything fermentable or fermented. Moderate exercise is superior to intense exercise. Exercise that is too intense is damaging and is linked with poorer health.