Vitamin D has been the topic of extensive research in recent years which has increased our awareness of the benefits of this essential nutrient. Vitamin D is credited with maximising calcium uptake and improved bone health as well as playing an important role in immune function and reducing the risk of a range of chronic illnesses. It has also raised awareness of the surprising incidence of deficiency in a sunny country like ours.
Sources of Vitamin D include sunshine, diet and supplementation.
Dietary sources of Vitamin D are limited which makes it very difficult to get enough Vitamin D from food sources alone.
The question of how much sunshine is needed to make adequate vitamin D is a tricky topic due to the increased risk of developing skin cancers with increasing sun exposure. See this information put out by the Anticancer Council for up to date recommendations.