Is vegetarianism good for weight loss?

Is becoming a vegetarian good for weight loss?

What about becoming a pescetarian?

Pescetarian is a diet which allows for fish and seafood but not other meats and animals

I wouldn't be doing it for the animals or morals, because quite frankly I don't give a damn about the animals we eat in western society.

Are those good diets for weight loss?

Is it bad to become a vegetarian or pescetarian while I'm anemic?
Is vegetarianism good for weight loss?
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