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The present study conducted to estimate the prevalence of vit.D3 deficiency and effect of weight and sex on vit. D3 levels. The measured parameters include: vit. D3, weight and this compared between men and women, the results showed there is a significant increase in vit. D3 concentration in women compared with men in age groups (20-29) , (50-59), (60-69) while the age groups (30-39), (40-49) and (+70) had decreased in vit. D3 men compared to women.
There is a significant increase in weight in women for all age groups compared to men except (30-39) and (50-59) groups which showed asignificant increase in weight in men compared to women the results also shows that age has negative effect on vit. D3 concentration in both men and women.