Should you take vitamin D3 supplements during the summer months?

The answer is yes.

Vitamin D3—often called the “sunshine vitamin”—is produced when sunlight interacts your skin. It plays a crucial role in your health by:

• Supporting strong bones through boosting calcium absorption
• Enhancing muscle function, which can improve balance and reduce the risk of falls and fractures

Although summer seems like the perfect season to replenish your vitamin D3 levels, reality is that many of us don’t spend enough time outdoors. Sunscreen use, busy work schedules, and limited time outside all significantly reduce our body’s ability to produce vitamin D3 naturally.

Sunscreen and Vitamin D

Sunscreen is essential for protecting against skin cancer, but it also blocks the UVB rays needed for vitamin D3 production. Even an SPF 15 sunscreen can reduce your body’s vitamin D production by up to 90%. Finding the right balance between sun protection and maintaining healthy vitamin D3 levels can be challenging.

Research shows that even during summertime, people with regular sun exposure may still not reach optimal vitamin D3 levels. Everyone’s response to UVB exposure varies—some people remain deficient, even with plenty of sunshine.*

Who should pay special attention to vitamin D even during summer?

• Older adults: The skin’s ability to produce vitamin D3 declines with age.
• People with darker skin: More sun exposure is needed to generate the same amount of vitamin D3 as those with lighter skin.
• Those who spend most of their time indoors: Indoor work lifestyles and certain health conditions can increase the risk of deficiency.
• Infants and young children: They have higher needs but also require protection from direct sunlight due to sensitive skin.

In summary:

While your body is capable of producing adequate vitamin D3 in summer, many factors can get in the way. This is why taking food supplements with vitamin D3—even during the sunny months—can be especially beneficial, particularly for those at greater risk.

*Oxford academic :Low Vitamin D Status despite Abundant Sun Exposure