If you're having trouble sleeping, vitamin D deficiency may be to blame. In this guide, we’ll explore how vitamin D works, why deficiency is common, how it could interfere with quality sleep and whether a vitamin D test might be the right option for learning more about your health.
What is vitamin D?
Vitamin D is both a nutrient found in some foods as well as a hormone produced by your skin when exposed to sunlight. It plays several important roles in the body, including regulating calcium for bone health. But research shows that vitamin D also affects sleep.
Why is vitamin D important?
Vitamin D helps the body absorb calcium, which is critical for building and maintaining strong bones. It also supports muscle, nerve and immune system function. Some studies link adequate vitamin D levels to lower risks of cancer, high blood pressure, depression and autoimmune disorders.
Why is vitamin D deficiency common?
Although vitamin D is readily available from sun exposure and some foods, deficiency is common globally. An estimated 1 billion people are deficient. Some groups are at higher risk, including:
- Older adults
- Darker-skinned people
- Those with certain conditions like liver disease, cystic fibrosis and Crohn's disease
- Obese individuals or those who had gastric bypass surgery
Limited sun exposure and living farther from the equator can also contribute to low vitamin D levels.
The link between vitamin D deficiency and disrupted sleep
Research shows that vitamin D deficiency is associated with sleep issues like:
- Frequent nighttime awakenings
- Daytime sleepiness
- Shorter sleep duration
- Experts aren't entirely sure why vitamin D affects sleep. One theory is it helps regulate circadian rhythms that dictate sleep-wake cycles. It may also affect levels of serotonin, a brain chemical that promotes sleep.
Signs your vitamin D levels could be low
Trouble sleeping may be a flag for vitamin D deficiency. Other possible symptoms include:
- Fatigue or weakness
- Bone or muscle pain
- Depression
The only way to find out is to get tested. A simple test can accurately measure your vitamin D levels.
Find out if your vitamin D levels are low
If you regularly have unrefreshing sleep, fatigue or other symptoms related to low vitamin D, a test can provide insight. You can conveniently purchase a Labcorp OnDemand Vitamin D Test online without scheduling a healthcare provider visit. A small sample can be collected at a local Labcorp facility with results available in 1-2 days.
Knowing your vitamin D level empowers you and your healthcare provider to make informed decisions about diet, sun exposure and supplementation to reach optimal levels. Addressing a deficiency may improve sleep and prevent other health problems down the road.
Sleep is vital to health and quality of life. If you suspect low levels of vitamin D could be robbing you of restorative rest, take action. Purchase a Labcorp OnDemand Vitamin D Test online today.
