What should you know about vitamin D deficiency in older adults?

Vitamin D helps the body absorb calcium and supports normal muscle function. Older adults may have less sunlight exposure, reduced dietary intake, or skin that makes vitamin D less efficiently. Some medicines and health conditions can also affect levels. Deficiency may have no obvious symptoms, but tiredness, generalised weakness, joint discomfort or low mood can occur. Vitamin D deficiency is a recognised condition; these symptoms do not by themselves confirm its cause.

A clinician may review your history, examine you and arrange a blood test when appropriate. Low vitamin D can contribute to reduced bone strength, which may make falls or injuries more concerning. It is different from a stress fracture, and pain after a fall needs its own assessment.

Arrange a routine appointment if deficiency is suspected or a result has already shown a low level. Take supplements only in the dose recommended for you; high-dose products are not automatically safer. Ask about food sources, safe outdoor activity and whether calcium intake, kidney health or current medicines change the plan. Gentle strength and balance activity can support mobility when it is safe for you. Keep a list of supplements and medicines so the clinician can check for interactions.

Seek prompt medical advice after a fall, new inability to walk, severe or persistent bone pain, or sudden worsening weakness. Contact a clinician sooner if weakness is causing repeated trips or difficulty rising from a chair. Emergency help is appropriate for a serious injury, loss of consciousness, or sudden neurological symptoms such as one-sided weakness or trouble speaking.

Ask whether testing is needed, what may have contributed to the result, which supplement and dose fit your health history, and when the plan should be reviewed. Discuss fall prevention if balance or muscle strength has changed.