How it Works

Vitamin D (cholecalciferol), is most well-known for promoting strong bones and preventing fractures. It's particularly beneficial for older people, who are at increased risk for low bone mineral density (BMD), osteoporosis, and fractures. It enhances calcium and phosphorus absorption in the gut and prevents calcium loss.

Unfortunately, most people have sub-optimal vitamin D levels from being indoors for the majority of the day and not spending nearly enough time in direct sunlight. Additional risk factors for vitamin D deficiency include living in a cold climate, having a darker skin tone, and being vegan or vegetarian.

Besides getting more sunlight, the best way to boost vitamin D levels is via diet and supplementation. There are limited dietary sources of vitamin D, but it is obtained in small amounts from fatty fish, grass-fed butter, cheese, egg yolks, and organ meats. However, most people require extra support from a vitamin D supplement, especially if you're struggling with low immunity, sore muscles, osteoporosis, bone pain, or depression.

Vitamin D is a great supplement to keep on hand during cold and flu season. Receptors on immune cells allow vitamin D to interact closely with your immune system and strengthen your defenses. This may be why respiratory infections are more common during the winter when vitamin D levels are at their lowest.

Vitamin D supports brain function and mental well-being. Regular vitamin D supplementation has been shown to improve symptoms of depression, especially when taken during the winter months.

Additionally, healthy vitamin D levels are associated with greater physical performance and reduced risk of falling in older people. D supplementation is recommended to support fitness and muscle strength as you age.