Vitamin D

Definition

Vitamin D is a nutrient that is essential for maintaining healthy bones and supporting the immune system.

Scientific / Technical Definition

Vitamin D is a fat-soluble vitamin that plays a critical role in calcium absorption, bone health, and immune system modulation. It is unique among vitamins as it can be synthesized in the skin upon exposure to sunlight.

Benefits

• Supports healthy bones and teeth.
• Enhances immune system function.
• May reduce the risk of certain chronic diseases.
• Supports muscle function.
• May improve mood and reduce symptoms of depression.

Examples

• Fatty fish such as salmon and mackerel
• Fortified foods like milk and cereal
• Egg yolks
• Cheese
• Sunlight exposure enabling skin synthesis

Additional Information

• Importance: Vitamin D is important for bone health as it helps in the absorption of calcium. It also plays a role in immune function and reducing inflammation.

Related Terms

• Calcium
• Immune System
• Bone Health
• Sunlight Exposure
• Fat-Soluble Vitamins

References

• Vitamin D - Health Professional Fact Sheet
• Understanding Vitamin D