Vitamin D is key for a healthy life, protecting against neurodegenerative and immune diseases. While people get most of the vitamin D that they need from sunlight in the summer months, this isn't always the case during the winter.
Because of this supplementation can be needed during winter months, especially in Scotland where the clouds can set in earlier and last longer. However, you can overdo it on vitamin D supplements health experts have warned.
Cases of "hypervitaminosis D" are reportedly on the rise, caused when people overdose on vitamin D supplementation. Most recently, a BMJ Case Report revealed that a man was rushed to hospital for the condition for several days.