Vitamin D, largely synthesised in response to skin exposure to sunlight, has important roles in the body. It is critical for bone health, fall prevention and is linked to many aspects of women’s health. A recent US study found that elderly people (over 65 years old) with low vitamin D had three times the risk of dying from heart disease and two and a half times the risk of dying from any cause, compared to people with adequate levels of vitamin D.

In addition, the researchers noted that over one third of older adults have vitamin D levels low enough to put them at increased risk of death. According to the researchers, this suggests that the current US daily vitamin D recommendations may be too low and vitamin D supplements may be needed for older people.

According to Jean Hailes research director Prof Helena Teede, this study highlights the importance of sensible sun exposure to ensure adequate vitamin D. “Expose your arms and face (without sunscreen) for 15 minutes per day in Summer or 40 minutes per day in Winter, avoiding the main high risk UV times (four hours in the middle of the day). This is important to optimise vitamin D levels.” Prof Teede suggests combining sensible sun exposure with regular physical activity to double your benefits. “The ideal option is to walk 30 minutes morning or late afternoon and get your sunlight exposure then.”

Content Updated November 30, 2009