The surprising reason some people still need to take vitamin D in summer

These days, most people include a vitamin D supplement in their 'must-haves' for the autumn and winter seasons when sunshine is in short supply - but some people may also need to take a vitamin D supplement during the summer months as well.

In the summer, we get most of our vitamin D from the sun. However, as we become more aware of the harmful impact of unprotected sun exposure, more of us are covering up with clothes, hats, and sun cream. While this certainly has its benefits for our health, we may be missing out on some of the benefits of vitamin D because of it.

"Vitamin D plays a vital role in supporting mood, heart and bone health. It’s particularly important in supporting calcium absorption too," says nutritionist Jenna Hope. With this in mind, it's hardly surprising that so many of us want to make sure we're getting enough vitamin D throughout the year.

Should I take vitamin D in summer?

Even in the heat of the summer, some people may need to supplement with vitamin D. This includes those who get little to no exposure to the sun as they spend their days inside, those who wear clothes that cover up most of their skin when outdoors, and those who wear a daily SPF. It's easy to assume you're getting enough vitamin D just because it's summer, but this isn't always true.

It's essential to limit the harmful effects of the sun all year round, but wearing body and facial sunscreen can make it harder for the body to absorb this vitamin. "Wearing SPF can inhibit vitamin D synthesis, so those wearing daily SPF may also require a vitamin D supplement," says Hope.

Those who spend time outside but less time in the sun than others during warmer months and anyone unable to synthesise enough vitamin D from the sun to meet the recommended requirements may also benefit from eating foods high in vitamin D or taking a supplement. This includes higher-risk individuals, "such as pregnant women, breastfeeding women, and the elderly", says Hope, along with babies and children.

According to nutrition researchers at Vitabiotics, the UK Department of Health recommends that babies up to one year of age have a daily supplement with up to 10mg of vitamin D - unless they are having at least 500ml of infant formula per day, as this is already fortified with the vitamin. Children between one and four should have a daily supplement for the same reasons.

Should I take vitamin D if I'm in the sun a lot? 

The sun is the best source of vitamin D. However, even if you are in the sun a lot, you may still need to take a vitamin D tablet. For example, depending on what SPF sunscreen you wear on your face every day, you may still need a supplement if you wear a factor 50 sun cream and keep it topped up. Equally, if you don't wear clothes that allow the sun to get to your skin, or there's a reason why the body can't properly synthesise vitamin D.

As always, you should speak to your doctor if you are concerned you're not getting enough vitamin D.

The sun isn't the body's only way of getting the vitamin, however. Fatty fish, red meat, liver, egg yolks, cheese, bananas, and cereals fortified with additional nutrients are also rich in this vital nutrient.

And of course, you can continue taking (or start taking) a vitamin D3 supplement of your choice to boost your mood and continue to protect your heart and bone health in the summer.

the surprising reason some people still need to take vitamin d in summer

Vita Premium Vitamin D3

Vita Premium Vitamin D3

Vita Premium's vitamin D3 capsules offer the maximum recommended amount per day of 4,000 iu per tablet in easy-to-take soft capsules. There are 365 capsules in every bottle too, so you won't have to worry about running out when winter rolls around again either.

the surprising reason some people still need to take vitamin d in summer

Vitabiotics vitamin D3

Vitabiotics Vitamin D3

In the summer months, you may still want to supplement with vitamin D but you might not need as much. Vitabiotics's ultra Vitamin D3 offers 1000 iu per tablet, making it perfect for maintaining your levels while out in the sunshine.

the surprising reason some people still need to take vitamin d in summer

Nutrition Geeks Vitamin D3

Nutrition Geeks Vitamin D3 and K2

K2 is another essential vitamin for the body - and it can help absorb vitamin D. Nutrition Geeks combination pack offers the maximum recommended 4000iu per tablet in an easily digestible form. There are 365 tablets here too, so you're sorted for all seasons.

Can you have too much vitamin D? 

If you're getting your vitamin D from the sun, you can never have too much - "your body will stop synthesising the vitamin" when it's had enough, says the nutritionist. However, you can take too much vitamin D in summer via supplements.

"Toxicity from supplementation can occur if you take very high doses regularly," she says. "Symptoms include nausea, vomiting, fatigue, muscle weakness, and bone pain, to name a few."

If you take too much vitamin D, you can also develop a condition called hypercalcemia over time - when you have too much calcium in the body. This weakens the bones and damages organs like the kidneys and heart.

How much vitamin D should I take in the summer?

The NHS recommends that adults take no more than 10mg per day (4,000 IU), whether you're supplementing with vitamin D in summer or the winter. As many people get enough vitamin D from the sun between mid-March and September, even when wearing sun cream, supplementing may not be necessary or you may want to take a reduced amount of vitamin D.

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