A new study indicates that regular physical activity is crucial for maintaining active vitamin D levels, especially during winter months when sunlight is limited. Published in Advanced Science, the research compared individuals engaging in four cardio sessions weekly to a control group. The findings show that those who exercised regularly maintained optimal levels of active vitamin D (1,25(OH)₂D₃), which is essential for bone health and immune function, while inactive individuals experienced declines in their vitamin D levels during winter.
Many adults become vitamin D deficient or insufficient during winter at northerly latitudes when cutaneous vitamin D synthesis does not occur. [Our] randomized controlled trial demonstrates that regular exercise completely maintains serum concentrations of the active vitamin D metabolite 1,25(OH)₂D₃ over winter.”
Regular, moderate-intensity physical activity on most days of the week can help preserve the body's active form of vitamin D, even during winter when sunlight is scarce.
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