This can vary as several factors can affect how vitamin D is made.įor example, some people do not make sufficient vitamin D, even with the right amount of skin exposure. It is not fully known how long a person needs to spend in the sun to produce the amount of vitamin D required.

Some people who experience heat intolerance more easily may find they need to rely on supplementation instead. If you live in the northern hemisphere, the sun is only strong enough to deliver the amount you need between late March or early April to the end of September, between the hours of 11.00am and 3.00pm.įor people with multiple sclerosis (MS), it is important to be mindful that heat intolerance can exacerbate MS symptoms, such as cognitive ability, fatigue, mobility, and others. Many health professionals advise that people should expose as much skin as they can to the sun, as is possible and practical, with more in winter and less in summer. Vitamin D is fat soluble, which means the body can store it for months until it is needed. Exposure to the sun can produce up to 90 per cent of the body’s daily vitamin D. Our body creates vitamin D when our skin receives direct sunlight when we are outdoors.

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