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.

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