Answer :
Final answer:
Vegetarians may lack proteins and essential nutrients like vitamin B12 and calcium in their diet.
Explanation:
Proteins may be lacking in the diet of those who practice vegetarianism, especially if they obtain proteins solely from plants. Nutrients such as vitamin B12, calcium, omega-3 fatty acids, and choline should be consumed adequately. Iron and zinc, particularly for female athletes, could also be of concern.
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