What are the signs of vitamin D deficiency?
How do you know if you are low on vitamin D?
Vitamin D is often called the “sunshine vitamin” because our bodies make it when we get sunlight. If you’re not getting enough, your body will send warning signals.
Early warning signs
These can be easy to miss but are worth paying attention to:

Constant tiredness or low energy7

Muscle weakness or body aches8

Feeling down or moody9

Falling sick more often than usual10
Why it matters
If left untreated, low vitamin D can lead to more serious health problems over time. The diagram below shows how early symptoms may progress to possible long-term complications and why early diagnosis and treatment can make a difference.