"Clearly, vitamin D is important for your heart health, especially if you have low blood levels of vitamin D. It reduces cardiovascular inflammation and atherosclerosis, and may reduce mortality, but it appears that at some point it can be too much of a good thing," study leader Dr. Muhammad Amer, an assistant professor in the division of general internal medicine at the Johns Hopkins University School of Medicine, said in a Hopkins news release. In one case study, a woman had a level of 476 ng/ml (1,171 nmol/l) after taking a supplement that gave her 186,900 IU of vitamin D3 per day for two months (9). Its deficiency can result in many problems related to bone development. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones. Importantly, these symptoms occurred in response to extremely high doses of vitamin D3, which led to calcium levels greater than 12 mg/dl (3.0 mmol/l). This was a whopping 47 times the generally recommended safe upper limit of 4,000 IU per day. Britons are being told not to take supplements containing vitamin A or beta carotene Vitamin D may have other roles in the body’s immune system and heart health too. "Clearly, vitamin D is important for your heart health, especially if you have low blood levels of vitamin D. Summary In some people, high-dose vitamin D therapy has been found to cause nausea, vomiting, and lack of appetite due to high blood calcium levels. One of vitamin K2’s most important functions is to keep calcium in the bones and out of the blood. Recent studies also show that vitamin D deficiency is linked to more serious health risks such as coronary artery disease, heart attacks, and strokes. It has also been suggested that low levels of vitamin D could be linked to chronic diseases such as cancer, multiple sclerosis and heart and circulatory disease. Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn’t properly mineralize, leading to soft bones and skeletal deformities. Only one person had true toxicity, at 364 ng/ml (899 nmol/l) (8). Terms of Use. Supplements are very common, and both vitamin D2 and vitamin D3 can be taken in supplement form. Heartburn, also known as acid reflux, is the result of the reverse flow of acidic stomach contents back into your esophagus. For some, the cause is an overactive parathyroid gland, certain medications, too much vitamin D, or underlying health conditions, including cancer. Some studies and clinical trials link excess intake of calcium supplements with increased risk of heart diseases. Unusually high vitamin D levels in the body following treatment with vitamin D supplements may cause increased thirst. 4. At the annual conference of the American Heart Association held near the end of 2011, a study was presented that measured 25-hydroxyvitamin D blood levels in a large group of Americans. First of all, if you ARE having heart palpitations for ANY reason whatsoever, you absolutely must see a health care professional about this and 'rule out' anything serious that might be wrong with your … Vitamin D actually functions as a hormone, and deficiency is incredibly common. Although only extremely large doses can cause toxicity so rapidly, even strong supporters of these supplements recommend an upper limit of 10,000 IU per day (3). However, these symptoms don’t occur in everyone with elevated calcium levels. ... A new Danish study indicates that children recieving ADHD medication have a higher risk of getting heart problems. In one case study, a boy developed stomach pain and constipation after taking improperly labeled vitamin D supplements, whereas his brother experienced elevated blood levels without any other symptoms (16). There are many nutritional supplements that can cause heart palpitations. Importantly, toxicity isn’t common and occurs almost exclusively in people who take long-term, high-dose supplements without monitoring their blood levels. However, it’s also possible — although rare — for this vitamin to build up and reach toxic levels in your body. If you’ve been taking vitamin D supplements and are experiencing any of the symptoms listed in this article, consult a healthcare professional as soon as possible. However, it’s also possible to have too much of a good thing. Make sure to avoid excessive doses of vitamin D. Generally, 4,000 IU or less per day is considered safe, as long as your blood values are being monitored. Excessive magnesium, potassium and vitamin D can all produce cardiac side effects. Too much vitamin D can damage your heart High vitamin D concentration in the blood is linked to a greater risk of dying from a heart attack. Vitamin D is involved in calcium absorption, immune function, and protecting bone, muscle, and heart health. A deficiency leads to softening of the bones (rickets or osteomalacia). Want More News? This is a detailed article about vitamin D and its health effects. Benefits may also include weight loss, and reducing colon cancer risk. The researchers concluded that people should be aware of the potential risks associated with taking supplements, particularly vitamin D. "People taking vitamin D supplements need to be sure the supplements are necessary," Amer said. ©1996-2020 MedicineNet, Inc. All rights reserved. Too little can cause you to sleep for too few hours at night while too much of it can make you feel sleepy during the daytime. Because vitamin D plays an important role in calcium absorption and bone metabolism, getting enough is crucial for maintaining strong bones. The risk of experiencing adverse side effects after absorbing vitamin D from the diet or exposure to the sun is … Vitamin D is essential for proper functioning of the body, especially for the growth of teeth and bones. This can cause vitamin D to build up in the blood. One woman experienced nausea and weight loss after taking a supplement that was found to contain 78 times more vitamin D than stated on the label (13, 14). Healthline Media does not provide medical advice, diagnosis, or treatment. In one case study, a man was hospitalized for kidney failure, elevated blood calcium levels, and other symptoms that occurred after he received vitamin D injections prescribed by his doctor (20). There are four fat-soluble vitamins in the human diet: A, D, E and K. This guide examines their health benefits, functions and main dietary sources. In one case study, an older man with dementia who received 50,000 IU of vitamin D daily for 6 months was repeatedly hospitalized with symptoms related to high calcium levels (10). Toxicity symptoms have been reported at extremely high blood levels resulting from megadoses. Stomach pain, constipation, or diarrhea, How Much Vitamin D is Too Much? Summary Taking too much vitamin D may resultin excessive absorption of calcium, which can cause several potentiallydangerous symptoms. CAD is the term for the type of cardiovascular disease with progressive closing of arteries that supply blood to the heart. "The inflammation that was curtailed by vitamin D does not appear to be curtailed at higher levels of vitamin D," Amer explained. Toxicity is rare, but can occur with extremely high…. Watch Out for Medicine Interactions. Many side effects of too much vitamin D are related to excessive calcium in the blood. home/heart center/ heart a-z list/ too much vitamin d could be harmful to heart article. The Surprising Truth, 8 Signs and Symptoms of Vitamin D Deficiency, 7 Healthy Foods That Are High in Vitamin D, 7 Nutrient Deficiencies That Are Incredibly Common, Vitamin D 101 — A Detailed Beginner's Guide, digestive distress, such as vomiting, nausea, and. It occurs naturally in food and can also be produced by your body when your skin is exposed to sunlight. In fact, this is one of its most important roles. The BHF has funded research in this area. If you are having Heart Palpitations from Vitamin D and you have no other heart problems, you're not going crazy- this is a real problem that many people experience and that YOU can actually do something about. These include nausea, vomiting, and poor appetite. Indeed, most studies have reported moderate-to-severe kidney injury in people who develop vitamin D toxicity (9, 12, 13, 14, 16, 17, 21). Some researchers think there is a link between vitamin D levels and coronary artery disease (CAD). Heartburn causes a mild to severe burning sensation in your throat or your chest. Here are 7 healthy foods that are high in vitamin D. Nutrient deficiencies may occur with almost every nutrient, but some are more likely than others. In another case study, an 18-month-old child who was given 50,000 IU of vitamin D3 for 3 months experienced diarrhea, stomach pain, and other symptoms. Vitamin D intoxication occurs when blood levels rise above 150 ng/ml (375 nmol/l). The typical recommended daily allowance of vitamin D is 400 to 1,000 IU, with a higher amount (800 to 2,000 IU) recommended for adults at high-risk of osteoporosis, and for older adults. See additional information. Here are eight symptoms that you may have a vitamin d deficiency. A lack of vitamin D can lead to bone deformities, such as rickets in children, and many health problems. However, taking extremely high doses of vitamin D3 for long periods may lead to excessive buildup in your body. However, they can also be a sign of elevated calcium levels caused by vitamin D intoxication (15). It’s also possible to inadvertently consume too much vitamin D by taking supplements that contain much higher amounts than are listed on the label. This can exert a hypertensive effect on the heart muscle, which in turn increases the risk of stroke and heart attack. Vitamin D3 has been found to increase blood levels significantly more than D2. Summary Stomach pain, constipation, or diarrhea may result from large vitamin D doses that lead to elevated calcium levels in the blood. Here are 7 incredibly common nutrient deficiencies. According to a new study, taking vitamin D for an extended period of time can cause … Vitamin D3 is produced in response to sun exposure and is found in animal products, whereas vitamin D2 occurs in plants. Scientists are warning against the use of certain vitamins amid claims they can increase the risk of heart disease. Vitamin D helps protect our bones and muscles. If you take too many vitamin D supplements your intestines will absorb too much calcium and this can lead to deposits in the heart and lungs. Vitamin E is a fat-soluble vitamin that can build up in your body if taken in excess amounts. Copyright © 2012 HealthDay. However, there isn’t agreement on an optimal range for adequate levels. Too Much Calcium Could Cause Kidney, Heart Problems, Researchers Say : Shots - Health News Calcium has been touted to stave off osteoporosis and promote bone health. These four tiny glands are situated behind the thyroid gland. Vitamin D helps your body absorb calcium from the food you eat. Posted October 27th, 2010 at 7:55 pm In fact, it’s estimated that about 1 billion people worldwide don’t get enough of this vitamin (1). Dietary supplements, such as over-the-counter multivitamins, do “more harm than good” and can increase the risk of developing cancer and heart disease, according to research in the US. Summary Too much vitamin D may lead to kidney injury in people with healthy kidneys, as well as those with established kidney disease. What’s more, it took a year for their levels to normalize after they stopped taking the supplements (11). MedicineNet does not provide medical advice, diagnosis or treatment. In contrast, you cannot reach dangerously high blood levels through diet and sun exposure alone. Four of them experienced nausea and vomiting, and three of them had a loss of appetite (12). Vitamin D is extremely important for good health. Terms of Use. Too much vitamin B12 side effects by overconsumption are rare. Hypercalcemia is a condition in which the calcium level in your blood is above normal. In conducting the study, published in the Jan. 15 issue of the American Journal of Cardiology, researchers examined five years of data from a national survey of more than 15,000 adults. TUESDAY, Jan. 10 (HealthDay News) --Studies have shown that vitamin D is critical for bone health and could have a protective benefit for the heart, but new research suggests that too much of it could actually be harmful. Too much calcium is definitely dangerous for increasing a risk of heart disease. If you take too many vitamin D supplements your intestines will absorb too much … Similar responses to vitamin D megadoses have been reported in other studies. This is one of the most common nutrient deficiencies in the world. But … Read about heart disease diagnostic tests, treatments, and heart disease prevention. Even if you follow a healthy diet, you may require supplements to achieve optimal blood levels. They found that people with a normal levels of vitamin D had lower levels of a c-reactive protein (CRP), a marker for inflammation of the heart and blood vessels. The main consequence of vitamin D toxicity is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination. According to Dr. Nissen, vitamin D does play an integral part in the regulation of blood pressure, but it’s a complicated process.And taking too much vitamin D can … Most people don’t get enough vitamin D, so supplements are common. In addition, make sure you purchase supplements from reputable manufacturers to reduce the risk of accidental overdose due to improper labeling. Vitamin D: The recommended intake for most adults is 15 micrograms.Excess consumption can cause nausea and vomiting, constipation, loss of appetite and … Although vitamin D is best known for its role in developing strong bones, low blood levels have been linked to an increased risk of heart attacks and strokes. All rights reserved. While an increasing number of people are supplementing with vitamin D, it’s rare to find someone with very high blood levels of this vitamin. Under these circumstances, taking vitamin C in excess may lead to iron overload, which can cause serious damage to your heart, liver, pancreas, thyroid, and central nervous system (9, 10, 11). This article explores the relationship between vitamin D and body…. Calcium plays an essential role in the body. Research studies have revealed that having both too little vitamin D and too much of it can negatively impact your slumber. Excessive vitamin D intake frequently results in kidney injury. Although many symptoms of excessive vitamin D are attributed to high blood calcium levels, some researchers suggest that megadoses may lead to low levels of vitamin K2 in the blood (18). An Energetic 8-Year-Old Boy Born With Heart Defect, Fried Food a Big Risk Factor in Heart Disease, Time to Angioplasty Is Crucial for Better Outcomes, Stopping Heart Meds Risky for Kidney Patients. Learn about heart disease, heart attack symptoms, and the signs of a heart attack. Summary Although vitamin D is required for calcium absorption, high levels may cause bone loss by interfering with vitamin K2 activity. Stomach pain, constipation, and diarrhea are common digestive complaints that are often related to food intolerances or irritable bowel syndrome. However, if vitamin D intake is excessive, blood calcium may reach levels that can cause unpleasant and potentially dangerous symptoms. It is safe to consume too much vitamin B12, but keep in mind it may negatively interact with other medication. ©1996-2021 MedicineNet, Inc. All rights reserved. This is vitamin D3, which is one of the most common types of vitamin D supplements. This article lets you know what dosage of vitamin D is best. It plays several roles in keeping your body’s cells healthy and functioning the way they should. These side effects may also be signs of other medical problems, including diabetes or a urinary tract infection, and you should be evaluated by a physician if they occur. A lack of vitamin D can cause bone problems such as rickets (which causes bowed legs) in children and muscle weakness and painful or tender bones in adults. Read more: Heart Disease: Causes of a Heart Attack. Below are the 6 main side effects of too much vitamin D. Achieving adequate levels of vitamin D in your blood may help boost your immunity and protect you from diseases like osteoporosis and cancer (5). 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