Learn about normal vitamin D levels by age. This article also looks at sources of vitamin D, symptoms of vitamin D toxicity, and more.

Most adults need at least 15 micrograms (mcg)—or 600 international units ( IU)—of vitamin D daily to maintain healthy levels. The amount recommended for children and older adults depends on age.

Vitamin D and cholesterol share a complex relationship. While vitamin D may help lower cholesterol levels, some studies suggest vitamin D can actually raise them.

Vitamin D has an impact on the health and the body, helping out with bone health, immunity system, and also regulates the mood. However, its deficiency often happens because these symptoms can ...

Similarly, surgical patients with low Vit D levels also healed slower than their normal Vitamin D counterparts clinically (83.0 vs. 50.0 d, p=0.031) and radiographically (203.0 vs. 88.0 d, p=0.043).

Galus, L., et al. (2023) Vitamin D supplementation increases objective response rate and prolongs progression-free time in patients with advanced melanoma undergoing anti-PD1 therapy.Cancer. doi ...

Patients with gastroparesis and low vitamin D levels showed higher gastric retention of a solid, low-fat meal at 4 hours than those with normal vitamin D levels (36% retention vs 31% retention; P ...

Study’s findings suggest that maintaining normal vitamin D levels may benefit patients. New research indicates that for patients with advanced skin cancer, it may be important to maintain normal ...