3. You’re more prone to illnesses.
The immune system aids in the prevention of illnesses. Once your body is exposed to bacteria, viruses, or other elements that cause illness, your immune system kicks into action to prevent the onset of an illness.
However, if your immune system is weak, it goes without saying that you are more prone to becoming sick. Since vitamin D helps to strengthen the immune system, if you aren’t getting enough of this nutrient, you could find yourself getting sick on a more frequent basis.
You could develop a variety of illnesses, but there are some that you may be more prone to, such as the common cold, strep throat, and the flu. If levels are low for too long, you could even develop a chronic condition, such as COPD. If you feel like you are always under the weather, have your vitamin D levels checked.