Vitamin D is essential, especially when it comes to bone density. Certain foods can help make sure you get enough.

Fatty fish like salmon and tuna are good options as well as mushrooms, and eggs, according to Beth Czerwony, a registered dietitian with Cleveland Clinic.

You can also talk to a doctor to see if a Vitamin D supplement is necessary.

Czerwony recommends taking a Vitamin D supplement with your heaviest meal because it is a fat-soluble vitamin, she said. Doing this will help your body absorb the supplement and increase your Vitamin D numbers a little bit faster.

Fatigue, bone pain, and muscle weakness are all signs of Vitamin D deficiency.