Vitamin D Overdose And Its Symptoms


The calcidiol serum level is used for vitamin D overdose diagnosis. As per research studies, the calcidiol levels are generally in between 32 to 70ng/mL in healthy individuals. The bioactive vitamin D hormone serum levels remain normal in instances of overdose. However, many medical science researchers are of the opinion that these levels are overly restrictive and outdated.

According to some studies, researchers have suggested that 10,000 IU of vitamin D is completely normal. Only if certain level of serum is breached due to excessive intake of vitamin D supplements, only then it can cause vitamin D overdose. If we look at some of the historical cases in the past, we will see that most of the vitamin D overdose cases have taken place due to industrial and manufacturing accidents.

Individuals with low levels of vitamin D require vitamin D supplements to boost vitamin levels. Intake of vitamin D supplements are normally safe, but excess intake can cause certain health problems.

Overdose of Vitamin D is Rare

Most of the food that we take every day does not have enough vitamin D to cause an overdose. It also doesn’t matter if your intake of vitamin D increases, your body will cope-up with it and store the excess amount of vitamin D for later use. It maintains the balance between phosphorous and calcium for proper balance of the body. It is also necessary for the calcification process. It also helps in maintaining the right concentration of bone and blood calcium. If there is vitamin D deficiency in the body it can pose serious problems like affecting the teeth and also leads to dental caries development. Vitamin D treatment for people with low blood calcium level is done under strict supervision of physicians, so the chance of overdose is rare.

Is It Possible to Have Overdose of Vitamin D?

There is a common question raised by many which is “Is it possible to have vitamin D overdose?” The answer is yes but it is a rare phenomenon. Many of us believe that there are high possibilities to have vitamin D toxicity but it is a rare case. Most of us are concerned about excess intake of vitamin D, however toxicity from selenium is more common compared to a vitamin D overdose. Overdose of selenium can take place in nature but it is not a natural phenomenon that can occur from intake of vitamin D enriched food or sunlight.

People who intake too much of supplements can easily be overdosed with vitamin D. Vitamin overdose is also possible if children are subjected to higher doses of vitamin D accidentally by their parents or if incorrect dosages are taken by elder people. Adults who take more than 10,000 IU long duration and people involved in industrial accidents also have greater chances of getting overdosed. But one needs to keep in mind that these are rare cases.

Tolerable Limit

Many government agencies have fixed the upper limit for vitamin D intake and they call it as safe limit. This tolerable level is set to 2000 UI per day. However, this level is ideal for daily vitamin D intake but it is nowhere near high dose levels of vitamin D to cause overdose. In various scientific studies people have taken vitamin D of 10,000 to 40,000 UI in a day, but they have shown no adverse effects. However, researchers believe that overdose can only occur if the person has elevated levels of calcium along with such high dose.

A Common Misconception

It is a common mistake for most of us to believe that taking vitamin D in excess can make you go into a depression, but these are rare side effects and can be solved easily. So, we can see that overdose of vitamin D is a rare phenomenon and it can only be determined if there is presence of high levels of blood calcium.

Is There a Threat from Sunlight?

It is however, unlikely to have an overdose from sunlight. Even if we stay for too long under sunlight, we can have around 20,000 UI of vitamin but our body is designed in such a manner that it will shut down automatically and will only take the amount required. So, it is almost rare to have high overdose of vitamin D and even if we have an overdose there is hardly any impact of it on our body. Thus, you can stop worrying about overdose from vitamin D.

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18 Responses to Vitamin D Overdose And Its Symptoms

  1. Henriette Wrenne

    On the topic of Vitamin D I’ve learned it plays an essential role in the body which is needed for the absorption and maintenance of calcium. Having the required amount of calcium in the body allows the body to structure appropriately within your bones, teeth and proper functioning of the nervous system. This is the major reason why we require the sufficient levels of vitamin D in our body. Vitamin D belongs to a group of fat-soluble vitamins. This means you need to transport the fats.

  2. Lasandra Burns

    Medical research has proven that a proper amount of vitamin d is essential to a healthy heart, muscle growth, and bone strength at all ages. It has also been shown to be indispensable for satisfactory brain and cognitive function, particularly among people over the age of 50.

  3. Micheal Gondran

    I’ve discovered that having proper levels of Vitamin D has shown to be vital to just about every aspect of proper health, from disease prevention to strong bones and mental alertness.

  4. Bernarda Deckelbaum

    Some do not realize but, vitamin D is a great supplement to take as proper supplementation prevents you from getting sick as often, especially if you are prone to a lot of allergies. If you have adequate amounts of vitamin D in your diet, you are less prone to cancer and other illnesses than you usually are.

  5. Damien Karcz

    Vitamin D is essential for us to soak up calcium and keep bones and teeth healthy. It allows the intestinal absorption of calcium and reduces the removal of it through urine. It regulates calcium and phosphorus metabolism. Vitamin D foods appear to assist in the treatment of psoriasis and increase our resistance to tuberculosis. Additionally , it protects against breast and color cancer.

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