You need vitamin D to support many body processes and help your body absorb calcium from your diet. However, excessive vitamin D intake can cause your body to absorb too much calcium, leading to side effects from hypercalcemia, when calcium starts to be stored in your bloodstream instead of your bones.

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1. Appetite Loss, Nausea, and Vomiting

One of the earliest signs you may be getting too much vitamin D is feeling sick to your stomach. Gastrointestinal (GI) symptoms are often the first and most noticeable symptoms of too much vitamin D.

Hypercalcemia irritates the digestive system and can cause appetite loss, nausea, and vomiting. As calcium levels rise, the body works to eliminate the excess, which can manifest as unusual digestive symptoms.

Abdominal tend

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