[kaitai]

As a personal anecdote, vegetarian didn't work for me! Persistent anemia, hair loss, fatigue; adding back some meat just fixed it.

Various diets are worth trying -- you never know until you try, and you learn a lot by trying. So for readers out there, try being vegan for a month: you'll learn a lot about what you eat and how to cook and you can observe how you feel.

Also worth noting: many traditional cultures embedded food restrictions into calendars and/or religious rules. Being vegan for a while before Easter is more or less a thing in some Christian groups; Ramadan involves fasting as a practice. These cultural practices, combined with the seasons in nature, make me wonder if we were built to be cyclically vegan/omnivore/berry-eater. This may be more sustainable for many.