Vitamin D supplementation has become quite common, with a particular emphasis on winter months where we can’t make our own.
In order to make vitamin D from sun exposure, we need a certain strength in UVB sunlight, but if you’re north of 42*N, which is the equivalent latitude to Madrid, Spain, then between October to March there is not enough UVB strength in sunlight to synthesize your own vitamin D.
We make vitamin D when UBV from the sun comes in contact with our skin, and a series of reactions from that initial contact ultimately lead to the active form of vitamin D being created in the kidneys.
And here is the thing about vitamin D from sunlight: you can’t get too much of it, because our bodies have a way of regulating your vitamin D levels through natural light exposure.
With weather like we have this summer, you can easily top up your vitamin D stores through regular sun exposure. Don’t forget to wear a sunscreen: it will stop you burning, but you’ll still get your vitamin D with anything other than full sunblock.
What you need is about 80% of your skin exposed to the sun, so it’s shorts and/or bikini type attire. Also, if your shadow is longer than you, you’ve lost the best strength in sunlight: so ideally exposure between 11am-4pm, factoring in our longer evenings.
So, ditch the vitamin D sprays or supplements this summer. And while you’re at it, why not get your dose with some outdoor exercise in this weather!
As always, stay fit, stay healthy.
Book Fitness Classes
Expect to sweat and smile. Social fitness will push you harder and you'll laugh longer. See results quicker. Take up a habit that sticks.Get Bua Fit
Partner with us
Build your income and fitness brand. Have more. Do less. No rent, no fees, no marketing costs. Focus only on your expertise - getting people fit.Get Set Up