Comment by amanaplanacanal
8 hours ago
The science around what fats are good or bad is so confusing I don't think we can say much about them with certainly, except that trans fats are probably bad. I lean towards "eat whole foods", but those can include anything from beef and coconut which are full of saturated fats, to fish and nuts which are full of polyunsaturated fats.
Limiting animal fats (which are mostly saturated fats) has a very noticeable and measurable effect on how I'm feeling and doing overall. Primarily using olive/avocado oil and nuts/seeds as my fat sources significantly improved my energy levels, mental clarity, sleep, and stress/HRV (as measured by my Garmin watch). I've noticed this so many times that I don't think this is a placebo. I haven't checked any specific blood markers that might be affected by dietary fats though.
Saturated fats _are_ essential for humans but you should be getting enough of them from non-animal sources.
YMMV