Vitamin D deficiency manifests through various subtle signs, impacting energy levels, immunity, and muscle strength. Fatigue, frequent illness, and muscle weakness are early indicators, potentially ...

Vitamin D deficiency has quietly become one of the most common nutritional shortfalls worldwide. It often wears no symptoms until it begins to affect bone health, mood, immunity, or energy levels. The ...

Lauren Oster is a contributing writer based in New York City. She covers health and wellness, science and sustainability, lifestyle and culture, and travel. Her work appears in many publications ...

Symptoms of vitamin D deficiency may include fatigue, frequent illness, anxiety, bone pain, and slower wound healing, among others. Treatments may include dietary changes or taking supplements.

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Vitamin D helps create new hair follicles and influences the hair growth cycle, and research shows that vitamin D deficiency may be linked to hair loss. However, it’s not clear whether getting more ...

Vitamin D is one of the vital nutrients that supports many aspects of health, from bone strength and muscle function to immunity and mood regulation. When your vitamin D levels are low, it can affect ...