Vitamin D is best known for its role in bone health. We must have vitamin D to absorb calcium and promote bone growth and too little vitamin D may result in soft bones or rickets in children and fragile, misshapen bones in adults (osteomalacia). It is also needed for healthy teeth and muscles.
Increasingly, evidence also suggests that vitamin D has broad effects on health and wellbeing and is associated with a reduced risk of a range of conditions including Alzheimer’s disease, depression, multiple sclerosis and some cancers. These studies show that people with higher levels of vitamin D have a lower risk of disease.