Table 1.

Prevalence of dietary supplement-use in the month preceding the study among interns of Tehran University of Medical Sciences, 2009

Supplement type	Supplement-use
	Males (N=32)	Females (N=86)
	No. (%)	No. (%)
Multivitamin/Multivitamin-multiminerals	29 (90.6)	45 (52.3)
One of B vitamins/B complex vitamins	1 (3.1)	15 (17.4)
Vitamin D/Vitamin D + Calcium	1 (3.1)	7 (8.1)
Calcium	0 (0.0)	8 (9.3)
Iron	1 (3.1)	37 (43.0)
Zinc	4 (12.5)	30 (34.9)
Omega-3	2 (6.2)	6 (7.0)
Magnesium/Selenium/Vitamin E/Protein	0 (0.0)	4 (4.6)
More than one supplement intake	6 (18.8)	47 (54.6)
Total N=356