It’s common to notice more hair shedding during the colder months, and many people assume it’s just part of the seasonal cycle. While changes in weather can play a role, they’re not always the full story. In some cases, increased hair loss may be connected to something happening beneath the surface—like a shortage of key nutrients, including vitamin D.
Vitamin D is essential for overall health and supports a wide range of functions in the body. It helps maintain strong bones, supports the immune system, and contributes to healthy skin. Despite its importance, many people have low levels—especially during fall and winter when sunlight exposure decreases. Since the body produces vitamin D through sunlight, shorter days and more time indoors can lead to deficiency without people even realizing it.
