BONE UP ON NUTRIENTS FOR HEALTH

MORE than half the world's population doesn't consume enough vital micronutrients including calcium, iron and vitamins C and E, according to a study from the Harvard T. H. Chan School of Public Health.

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Now, California gastroenterologist Saurabh Sethi, who was not part of the research, says your body may display these five significant signs if you're lacking nutrients:

BRITTLE NAILS

Nails are primarily composed of the protein keratin, so weak nails could reflect a diet deficient in protein. Another cause could be iron deficiency anemia.

EYELID TWITCHING