NEXT VITAMIN D WORKSHOP: JUNE 24-27, 2025 MONTREAL, CANADA

A university study finds regular exercise during the winter can keep Vitamin D levels up.

In people with overweight or obesity, regular exercise even without weight loss or vitamin D supplementation completely prevents the usual winter decline in the vitamin D metabolite that maintains health at a cellular level, 1,25(OH) 2 D 3 , and ameliorates the decline in the vitamin D status marker 25(OH)D. Abstract Many adults become vitamin D deficient or insufficient during winter at northerly latitudes when cutaneous vitamin D synthesis does not occur. Vitamin D accumulates in adipose tissue and people with overweight or obesity are more likely to have low systemic vitamin D. This randomized controlled trial demonstrates that regular exercise completely maintains serum concentrations of the active vitamin D metabolite 1,25(OH) 2 D 3 over winter and may ameliorate the decline in 25(OH)D status in overweight men and women, even without weight loss. The binding of 1,25(OH) 2 D 3 to the vitamin D receptor mediates the crucial role for vitamin D in the healthy function of multiple organ systems and vitamin D supplementation does not impact circulating 1,25(OH) 2 D 3 . Thus, the VitaDEx study provides causal evidence that exercise plays an important role in vitamin D metabolism that is distinct from the effects of oral supplementation.

A new study looked at how to get vitamin D

Abstract figure legend Thirty-three healthy adults (14 ♀, 41 (15) years, body mass index 26.2 (3.7) kg/m2, V̇O2max${{\dot{V}}_{{{{\mathrm{O}}}_{\mathrm{2}}}{\mathrm{max}}}}$ 36.2 (9.2) ml/kg/min; mea...

Vitamin D is lipophilic and accumulates substantially in adipose tissue. Even without supplementation, the amount of vitamin D in the adipose of a typical adult is equivalent to several months of the....

In people with overweight or obesity, regular exercise even without weight loss or vitamin D supplementation completely prevents the usual winter decline in the vitamin D metabolite that maintains he...

The primary protein source of a diet may impact skeletal muscle maintenance with advancing age. The impact of the animal and plant protein content of …

YouTube video by The Royal Institution

Some experts have theorised our total daily calorie burn is limited – but research shows us otherwise.

Some experts have theorised our total daily calorie burn is limited – but research shows us otherwise.

The idea that increasing physical activity directly adds to TEE in humans (additive model) has been challenged by the energy constrained hypothesis (constrained model). This model proposes that increa...