Vitamin D is often called the “sunshine vitamin” because our bodies make it when we’re out in the sun. But many people don’t get enough—especially if they stay indoors, live in cloudy areas, have darker skin, or wear sunscreen often.

That’s where Vitamin D supplements can help.

Vitamin D helps your body in many ways. Here are some of its biggest benefits:

Vitamin D helps your body absorb calcium, which is needed to build and keep strong bones. Without enough, bones can become weak or break easily.

Vitamin D helps your body fight off viruses and bacteria. It may help reduce your risk of colds, the flu, and other infections.

Some studies show that low Vitamin D levels are linked to feeling tired or down. Getting enough may help improve your mood and energy.

Vitamin D helps keep your muscles strong, which can help prevent falls, especially as you get older.

Vitamin D may help lower the risk of heart disease by supporting healthy blood pressure and reducing inflammation.

You might need a Vitamin D supplement if:

A simple blood test can check your levels.

Most adults need 600 to 800 IU of Vitamin D per day, but some may need more. Always talk to your doctor before starting a supplement to find the right dose for you.

Yes. Too much Vitamin D can cause side effects like nausea, weakness, and high calcium levels. Stick to the recommended amount unless your doctor tells you otherwise.

Vitamin D is important for your bones, immune system, muscles, and mood. If you’re not getting enough from the sun or food, a supplement may help you feel better and stay healthier.

Talk to your doctor to see if a Vitamin D supplement is right for you.