ELI5: Explain Like I'm 5

Vitamin D deficiency

Vitamin D is a type of vitamin that helps our bones and muscles stay strong and healthy. The main source of Vitamin D is the sun, which helps our body create it. Just like plants need sunlight to grow, our bodies need sunlight to make Vitamin D.

Sometimes, people do not get enough sunlight or Vitamin D from their diet, which can cause a condition called Vitamin D deficiency. This means that their body does not have enough Vitamin D to keep their bones and muscles strong and healthy.

When someone has Vitamin D deficiency, they might feel tired, weak, and have muscle pain. They might also have trouble walking, running, or doing other physical activities. In addition to bone and muscle problems, Vitamin D deficiency can also lead to other health problems like depression, diabetes, and even some types of cancer.

Doctors can check for Vitamin D deficiency with a blood test. If somebody has this condition, they may need to take supplements to get more Vitamin D. They may also need to spend more time in the sun or eat foods that are high in Vitamin D, like fish, eggs, and fortified milk. By getting enough Vitamin D, people can help their bodies stay strong and healthy.
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