How Vitamin D Benefits Your Health

Vitamin D plays a key role in supporting your bones, immune system, and muscle function. However, to see these essential benefits, you need to get enough of the sunshine nutrient.

In the UK, getting enough Vitamin D from sunlight alone can be difficult. Especially during the winter months. Vitamin D supplementation can help you fight against signs of deficiency.

This guide explains the benefits of Vitamin D, how much you need, and simple ways to increase your intake.

Vitamin D is a vital nutrient that supports several key functions in the body. 

It exists in two main forms: 

Whether you take Vitamin D supplements or focus on a rich Vitamin D diet, the benefits of (D2 and D3 vitamins) are vital to keeping your body healthy. 

Explore our full range of Vitamin D supplements. 

The importance of Vitamin D supplementation in the UK

Vitamin D3 is known as the "sunshine" vitamin because it's made in the skin when exposed to sunlight (UVB rays). In the UK, there is rarely enough sunlight for healthy Vitamin D levels during winter (November to March).  UVB rays also cannot pass through clothing, sunscreen or make up making it difficult all year round to make enough Vitamin D3. 

Find out more about Vitamin D deficiency and what causes low Vitamin D levels. 

Vitamin D is a vital nutrient. It benefits your immune system, supports bone health, and aids regular muscle function. Without the sunshine vitamin, you will be at risk of: 

The key benefits of Vitamin D

Vitamin D plays an essential role in several functions across the body. Maintaining healthy levels can support:

Bone health

Vitamin D helps regulate calcium and phosphorus levels, which are essential for maintaining strong bones and teeth. It also works alongside vitamin K to support proper calcium absorption and distribution in the body. Vitamin D supplementation becomes even more important as we age contributing to reduction of bone mineral density loss in women over 50 due to factors such as menopause. It also reduced the risk of trips and falls due to postural instability in those over 60. 

Many people choose a combined Vitamin D3 and K2 supplement to support bone health. 

Immune health

Vitamin D contributes to the normal function of the immune system, helping your body respond effectively to infections and everyday illnesses. A healthy immune system can reduce susceptibility to coughs and colds and help you recover more quickly. 

Discover more about how Vitamin D supports the immune system. 

Conception

This vital vitamin can also benefit fertility chances and health during pregnancy.  Maintaining normal levels of Vitamin D is important for partners trying to conceive, as well as taking Vitamin D in pregnancy. NHS guidelines advise that those trying to get pregnant supplement Vitamin D daily, as well as recommending supplementation throughout pregnancy to support both mum and baby. 

Muscle function

Vitamin D benefits your muscles by helping them function normally. Taking supplements can help to encourage muscle development and strength , as well as healthy muscle recovery. 

Teeth strength

Just as Vitamin D benefits your bones, it also helps promote strong teeth thanks to its role in supporting calcium absorption.

Good sources of Vitamin D

Vitamin D can be obtained through sunlight exposure, food, and supplementation. 

Sunlight

When your skin is exposed to UVB rays, it naturally produces vitamin D. However, as modern life means we spend more time living and working indoors, exposure to sunlight decreases. UVB rays also cannot penetrate clothing, make up or sunscreen further limiting Vitamin D production even when we do spend time outside or on holiday. Living in the UK risk of deficiency increases further during the Winter months (October – March).  

Food sources

Some foods naturally contain vitamin D, including: 

Supplementation

For many people, especially during the winter months, a daily supplement can help maintain consistent Vitamin D levels. <- Moved this section further up the page to follow a more logical page hierarchy 

How much Vitamin D do you need?

According to the NHS, adults need at least 10 micrograms (400 IU) of Vitamin D a day. This includes children from the age of 1 and up, and those who are pregnant or breastfeeding, or at risk of deficiency. This daily amount is designed to help maintain healthy Vitamin D levels long term, alongside a healthy diet. Higher strengths are recommended if you need to improve your Vitamin D levels, not getting enough through your diet or of you’re struggling with signs of deficiency. 

If you choose to supplement, it’s important to follow recommended intake guidelines and stay within the safe upper limit unless advised otherwise by a healthcare professional. 

Learn more about Vitamin D dosage. 

Testing your Vitamin D levels

You can easily test your vitamin D levels and potential symptoms with a blood spot test. We offer a Vitamin D Test Kit to check your levels from the comfort of your own home. 

You’ll receive a personalised supplementation plan and a free supplement based on your results. With BetterYou, it’s easy to check if you are at risk of a vitamin or mineral deficiency. If you have insufficient levels, you won’t reap the essential benefits of Vitamin D. 

Should I supplement Vitamin D?

Whether you need to supplement vitamin D depends on your individual circumstances, including your diet, lifestyle, and sun exposure. However, if you live in the UK, it's unlikely that you are getting enough from sunlight and diet alone. 

If you're unsure about current levels, testing can help provide clarity. Alternatively, your GP will be able to offer expert guidance. 

You may benefit from supplementation if you: 

Supplementing with BetterYou

If you find it difficult to maintain healthy vitamin D levels through sunlight and diet alone, supplementation can offer a convenient way to support your intake year-round. 

BetterYou specialises in nutrient supplementation, offering innovative formats designed for ease of use and effective absorption. Shop our supplement ranges, including Vitamin D, Vitamin C, Magnesium, and more. 

FAQs

Which people are most at risk of Vitamin D deficiency?

People who have limited sun exposure, spend most of their time indoors, have darker skin, are pregnant or breastfeeding, are over 65, or follow a vegan or restricted diet may be at higher risk of vitamin D deficiency, particularly during the autumn and winter months in the UK. 

Can you take too much Vitamin D?

It is possible to take too much vitamin D, particularly through high-dose supplements over time. Exceeding the recommended intake can lead to excess calcium levels in the blood. Always follow dosage guidelines and consult a healthcare professional if you are unsure about the appropriate amount. 

How can I raise my Vitamin D levels quickly?

The most effective ways to increase vitamin D levels are through safe sun exposure, consuming vitamin D-rich foods, and taking a daily supplement. If you are deficient, a healthcare professional may recommend a specific dosage to help restore healthy levels safely and efficiently. 

Getting enough Vitamin D from a plant-based diet

Those with a diet that excludes animal products may struggle to obtain enough Vitamin D from their food. Supplements help to bridge the nutrient gap that may be caused by a restricted diet. 

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