I’d call this a “rational” diet; unfortunately, most of the diet plans I find on reputable sources are for “constrained” people (vegans, vegetarians, or people

I’d call this a “rational” diet; unfortunately, most of the diet plans I find on reputable sources are for “constrained” people (vegans, vegetarians, or people that are allergic to something). Being unconstrained, I’d assume I’d have an easier time finding a sensible diet that has all the nutrients and energy I need while being reasonably eco-friendly and wouldn’t break the bank, but that’s not my experience. Would you recommend any sources that I could use to build such a diet plan? Why do I ask for some reputable sources? My attempt to build a plan according to my “common sense” (similar to your advice actually: dropping most of red meat, eating more legumes etc) lead to me developing hypotension and iron-deficiency; of course I can adjust the diet now I know this, but I’d rather do it the proper way this time.