
20/09/2025
Vitamin D is often called the sunshine vitamin because your skin makes it when exposed to sunlight. It plays a major role in helping your body absorb calcium, which keeps bones and teeth strong. When you are low on vitamin D, bones can become weak and brittle, leading to conditions like rickets in children or osteoporosis in adults.
The effects go beyond the skeleton. Vitamin D is important for muscle strength, and deficiency can cause aches, cramps, or even frequent falls in older adults. It also supports the immune system, so low levels may make you more prone to infections like colds and flu.
Some studies suggest that vitamin D affects mood and brain health, linking low levels to feelings of depression or low energy. The heart and lungs also rely on vitamin D for proper function, meaning deficiency may increase the risk of certain chronic illnesses over time.
Good sources of vitamin D include sunlight, fatty fish, egg yolks, and fortified foods. Supplements are often recommended if natural sources are not enough. Paying attention to your vitamin D levels is a simple step that can protect your bones, muscles, immune defenses, and overall health.