The present data indicate that calcium supplementation in postmenopausal women with dietary calcium intakes on the order of 800 mg/d causes no significant change in body weight.

Does calcium pills make you lose weight?

Analysis as separate trials also found no significant differences between the placebo and the calcium groups. Calcium supplementation did not significantly affect amount of weight or fat lost by women counseled to follow a moderately restricted diet for 25 wk.

Does calcium and vitamin D cause weight gain?

A vitamin D deficiency is unlikely to cause weight gain. However, it may cause other health problems or unpleasant symptoms, which are worth avoiding. You can maintain adequate vitamin D levels through a combination of limited sun exposure, a vitamin-D-rich diet, and taking vitamin D supplements.