This Article is From Aug 26, 2020

Vitamin D Toxicity: 5 Possible Side Effects Of Too Much Vitamin D

Vitamin D is important for your overall health in several ways. But excess of this vitamin can contribute to several side effects. Here are some of these you need to know.

Vitamin D Toxicity: 5 Possible Side Effects Of Too Much Vitamin D

Too much vitamin D can lead to abnormal levels of calcium in the blood


  • Vitamin D helps in absorption of calcium from the diet consumed
  • Vitamin D is also beneficial for your mental health
  • Sunlight is one of the best sources of vitamin D

Vitamin D also known as the sunshine vitamin is beneficial to your health in multiple ways. It is extremely important for your bones and teeth. This vitamin is responsible for the absorption of calcium from the diet consumed which plays a vital role in the formation and growth of bones and teeth. Studies have also highlighted that vitamin D can help in fighting against disease. It is also helpful in controlling the symptoms of depression. Sunlight is one of the best sources of vitamin D. Your body produces vitamin D when exposed to sunlight.

But too much exposure to sunlight is harmful to your health in several other ways. Many have switched to supplements to receive optimum levels of vitamin D. There has been much emphasis on the benefits of vitamin D in the past, but intake of this vitamin in excess is linked with several side effects. Here are some of the side effects one may experience after the consumption of too much vitamin D.

Side effects of consuming too much vitamin D

It may take longer to show the symptoms of vitamin D toxicity which makes it difficult to detect it on time.

1. Hypercalcemia

It is the most significant side effect linked to vitamin D toxicity. Hypercalcemia is a condition in which there is an excess amount of calcium in the blood. Higher levels of vitamin D results in inappropriate levels of calcium in the body. Having too much calcium can lead to several side effects like loss of appetite, constipation, nausea, high blood pressure and more.


Excess of vitamin D can lead to digestives issues
Photo Credit: iStock

2. Harmful to kidneys

Too much vitamin D can increase the risk of kidney diseases, suggest studies. People with pre-existing kidney diseases should consult a doctor before adding vitamin D supplements to your diet.

Also read: Vitamin D Deficiency: Know The Signs And Symptoms And Why The Sunshine Vitamin Is Important For You

3. May lead to digestive issues

Increased levels of vitamin D and calcium in the body can contribute to several digestive issues like stomach pain, constipation and diarrhea. These can be the signs of other health issues as well, therefore it is important to inform your doctor if you are taking any supplements.

Also read: Vitamin D Deficiency: Here's How You Can Maintain Vitamin D Levels At Home

4. Bone loss

The role of vitamin D for bone health is quite well-known. But too much of this vitamin can affect your bones negatively. To keep your bones in optimum health, consume calcium and vitamin D in the prescribed quantity.


Too much vitamin D is harmful to your bones
Photo Credit: iStock

5. Nausea, vomiting and poor appetite

Excessive calcium in the body leads to nausea, vomiting, and poor appetite. Studies have also highlighted these side effects of too much calcium in the body.

You should consult an expert before adding vitamin D to your daily diet. You doctor will prescribe you the right amount according to your age, gender and pre-existing medical conditions

Disclaimer: This content including advice provides generic information only. It is in no way a substitute for qualified medical opinion. Always consult a specialist or your own doctor for more information. NDTV does not claim responsibility for this information.