How to Know If You’re Vitamin D Deficient – Even in Sunny Weather

DATE

July 18, 2025

The UK has plenty of sunshine right now. Yet, many young adults are not getting enough vitamin D.

Medichecks, a UK health testing company, checked the vitamin D levels of over 34,000 people. Their results were surprising.


Your Shadow Could Show If You Have Enough Vitamin D

Dr Natasha Fernando, Medical Director at Medichecks, says your shadow tells a story.

If your shadow is shorter than you, your skin can make enough vitamin D. But if it is longer, or you can’t see it, you might be low on vitamin D. This can happen even on sunny days.


What the Numbers Say

The data shows:

  • 58% of 18 to 30-year-olds have lower than ideal vitamin D levels
  • Young adults are twice as likely to be deficient as people over 60
  • Half of young transgender adults tested were deficient
  • Overall, more than half of all age groups had low vitamin D
  • 18% of all tested people had a vitamin D deficiency

Why Does This Matter?

Dr Asia Ahmed, Digital Clinician at Medichecks, explains:

“Vitamin D isn’t just a winter issue. Many young people spend most time indoors. They use phones and computers a lot. This limits their sun exposure.”

Without enough vitamin D, your mood, energy, and bones may suffer.


Easy Testing and Simple Solutions

The good news is you can check your vitamin D level easily. Medichecks offers an at-home blood test for £39.

A doctor reviews your results and gives advice. If you are low, you can take supplements, eat vitamin D rich foods, or spend more time outside.


Take Control of Your Health Today

Don’t guess your vitamin D level. Test it.

Visit Medichecks.com to order your test. It’s fast, easy, and could improve your health.


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