25-Hydroxy Vitamin D

High levels of 25-OH Vitamin D might mean that your body is taking in more of this nutrient than it needs. This can happen if you're consuming a lot of Vitamin D from supplements, certain medications (like antifungal drugs or antiretroviral medications), or eating a diet rich in Vitamin D. Sometimes, high levels can also be due to less common conditions like sarcoidosis or other diseases that affect how your body processes this vitamin. It's important to know that while Vitamin D is essential for your health, having too much can lead to a condition called hypervitaminosis D, which can cause an excess of calcium in your blood and potentially affect your heart, bones, and kidneys. Keep in mind that high Vitamin D levels are usually not caused by sun exposure or diet alone.

Symptoms of high levels of 25-OH Vitamin D could include nausea, vomiting, weakness, frequent urination, and kidney problems. In severe cases, it could also lead to bone pain and heart abnormalities.

Low levels of 25-OH Vitamin D might mean that you're not getting enough sunlight, which is important for your body to produce this essential nutrient. Your diet could also be lacking in Vitamin D-rich foods like fatty fish, cheese, and egg yolks. Factors like living far from the equator, having darker skin, or using sunscreen often can also contribute to lower Vitamin D levels. Some medications, such as certain anti-seizure drugs, can affect how your body processes Vitamin D. Additionally, low levels could be a sign of underlying conditions like celiac disease, which can make it harder for your body to absorb nutrients from food.

Symptoms of low levels of 25-OH Vitamin D could include fatigue, bone pain, muscle weakness, mood changes, and frequent illness or infections.