Vitamin D

Definition

Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and maintain proper bone structure.

Scientific / Technical Definition

Vitamin D refers to a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and multiple other biological effects. The most important compounds in this group are vitamin D3 (cholecalciferol) and vitamin D2 (ergocalciferol).

Benefits

• Supports bone health by aiding calcium absorption
• Boosts immune system function
• Reduces inflammation
• May improve mood and reduce risk of depression
• Helps protect against certain diseases like osteoporosis

Examples

• Fatty fish such as salmon and mackerel
• Fish liver oils
• Fortified milk and dairy products
• Egg yolks
• Fortified cereals and orange juice

Additional Information

• Importance: Vitamin D is crucial for maintaining bone density and strength, especially in seniors who are at higher risk for bone density loss.

Related Terms

• Calcium
• Vitamin K
• Bone Health
• Sun Exposure

References

• Vitamin D and Health
• Vitamin D Overview