Can Vitamin D Help Reduce Seasonal Depression?

This winter season might be comfortable and exciting for some, but many people struggle with seasonal depression or seasonal affective disorder (SAD). Lack of sunlight during this time of year can also lead to low levels of Vitamin D, which can contribute to mood changes such as depression.

Research has shown that Vitamin D can play an essential role in regulating mood and preventing depression. People who experience depression have lower levels of serotonin, a neurotransmitter that controls the mood.


According to the study, the scientists discovered that people suffering from depression who received Vitamin D supplements noticed improved symptoms. Vitamin D can activate serotonin in the brain.

It would then be logical that taking a supplement could help alleviate depression, especially when you struggle to get Vitamin D naturally. But while increasing your vitamin D levels may be beneficial, supplements alone are not the proper treatment for SAD.

Anisha Patel-Dunn, DO, Chief Medical Officer of Life Stance Health, says, “It is not recommended to treat seasonal depression solely with Vitamin D.”

She continued, “If you recognize that something is off or if you are feeling low or not enjoying things like you used to, it is important to reach out to a licensed therapist for help.”


Vitamin D supplements alone are ineffective in fighting SAD symptoms. Instead, it is essential to turn to other types of treatment. While adjusting to your routine, soak in as much daylight as you can, and eat a diet rich in essential nutrients as Vitamin D can help.