Summary Vitamin D levels greater than 100 ng/ml (250 nmol/l) are considered potentially harmful. Want More News? It plays several roles in keeping your body’s cells healthy and functioning the way they should. Symptoms of hypercalcemia, or high blood calcium levels, include: The normal range of blood calcium is 8.5–10.2 mg/dl (2.1–2.5 mmol/l). 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). Because vitamin D plays an important role in calcium absorption and bone metabolism, getting enough is crucial for maintaining strong bones. However, it’s also possible — although rare — for this vitamin to build up and reach toxic levels in your body. Vitamin D helps protect our bones and muscles. For some, the cause is an overactive parathyroid gland, certain medications, too much vitamin D, or underlying health conditions, including cancer. 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. This article lets you know what dosage of vitamin D is best. Sign Up for MedicineNet Newsletters. The article dwells on the causes and symptoms of vitamin D overdose. Calcium plays an essential role in the body. 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). Kidney failure is treated with oral or intravenous hydration and medication. A vitamin D allergy is considered uncommon. Summary Too much vitamin D may lead to kidney injury in people with healthy kidneys, as well as those with established kidney disease. Watch Out for Medicine Interactions. 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. Our website services, content, and products are for informational purposes only. 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). Unusually high vitamin D levels in the body following treatment with vitamin D supplements may cause increased thirst. Some vitamin D can also protect against some sun damage. It’s also known as atherosclerotic heart disease or atherosclerosis. 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). These four tiny glands are situated behind the thyroid gland. In another, two men took improperly labeled vitamin D supplements, leading to blood calcium levels of 13.2–15 mg/dl (3.3–3.7 mmol/l). Indeed, most studies have reported moderate-to-severe kidney injury in people who develop vitamin D toxicity (9, 12, 13, 14, 16, 17, 21). 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. For decades, experts have recommended calcium supplements to prevent osteoporosis which is responsible for fractures that cause many elderly men and women to lose their independence — and sometimes their lives.How too much can hurt: “More and more stu… 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. Most people don’t get enough vitamin D, so supplements are common. But recent studies found vitamin D supplements did not bolster heart health. Recent studies also show that vitamin D deficiency is linked to more serious health risks such as coronary artery disease, heart attacks, and strokes. However, they can also be a sign of elevated calcium levels caused by vitamin D intoxication (15). Vitamin D actually functions as a hormone, and deficiency is incredibly common. Britons are being told not to take supplements containing vitamin A or beta carotene "Clearly, vitamin D is important for your heart health, especially if you have low blood levels of vitamin D. As with other symptoms, response appears to be individualized even when vitamin D blood levels are similarly elevated. All rights reserved. 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. In contrast, you cannot reach dangerously high blood levels through diet and sun exposure alone. Too much vitamin B12 side effects by overconsumption are rare. 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). According to a new study, taking vitamin D for an extended period of time can cause … One of vitamin K2’s most important functions is to keep calcium in the bones and out of the blood. 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. Therefore, a deficiency in this vitamin is associated with a lack of sunlight. Vitamin D helps your body absorb calcium from the food you eat. A growing number of studies point to vitamin D deficiency as a risk factor for heart attacks, congestive heart failure, peripheral arterial disease (PAD), strokes, and the conditions associated with cardiovascular disease, such as high blood pressure and diabetes. This can … Vitamin D is involved in calcium absorption, immune function, and protecting bone, muscle, and heart health. The risk of experiencing adverse side effects after absorbing vitamin D from the diet or exposure to the sun is … This is one of the most common nutrient deficiencies in the world. Some researchers think there is a link between vitamin D levels and coronary artery disease (CAD). 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. In the U.S., 1 in every 4 deaths is caused by heart disease. 1. ... A new Danish study indicates that children recieving ADHD medication have a higher risk of getting heart problems. Copyright © 2012 HealthDay. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones. © 2005-2021 Healthline Media a Red Ventures Company. 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. 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. Here are eight symptoms that you may have a vitamin d deficiency. The woman was admitted to the hospital after she experienced fatigue, forgetfulness, nausea, vomiting, slurred speech, and other symptoms (9). 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 … One study followed 10 people who had developed excessive calcium levels after they had taken high-dose vitamin D to correct deficiency. Yet, aside from fatty fish, there are few foods rich in vitamin D. What’s more, most people don’t get enough sun exposure to produce adequate vitamin D. Thus, deficiency is very common. These include nausea, vomiting, and poor appetite. Do lower vitamin D levels mean higher risk for cardiovascular disease? A lack of vitamin D can lead to bone deformities, such as rickets in children, and many health problems. This article explores the relationship between vitamin D and body…. This article discusses 6 potential side effects of getting excessive amounts of this important vitamin. Risk of Heart Disease. All rights reserved. "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. Posted October 27th, 2010 at 7:55 pm Why it matters: Calcium plays a critical role in building and maintaining healthy bones. Stomach pain, constipation, or diarrhea, How Much Vitamin D is Too Much? Genetically low vitamin D concentrations cause premature death. Vitamin D3 has been found to increase blood levels significantly more than D2. 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. 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. 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). Supplements are very common, and both vitamin D2 and vitamin D3 can be taken in supplement form. Studies have shown that each additional 100 IU of vitamin D3 you consume per day will raise your blood vitamin D levels by 1 ng/ml (2.5 nmol/l), on average (2, 3). Vitamin D intoxication occurs when blood levels rise above 150 ng/ml (375 nmol/l). Vitamin D is essential for proper functioning of the body, especially for the growth of teeth and bones. In fact, it’s estimated that about 1 billion people worldwide don’t get enough of this vitamin (1). To protect against bone loss, avoid taking excessive vitamin D supplements and take a vitamin K2 supplement. Toxicity symptoms have been reported at extremely high blood levels resulting from megadoses. 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. Vitamin D is important for optimal health, but 42% of Americans are deficient. It is safe to consume too much vitamin B12, but keep in mind it may negatively interact with other medication. 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. 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. Benefits may also include weight loss, and reducing colon cancer risk. Similar responses to vitamin D megadoses have been reported in other studies. Summary Taking too much vitamin D may resultin excessive absorption of calcium, which can cause several potentiallydangerous symptoms. 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. Although a vitamin D level of 30 ng/ml (75 nmol/l) is typically considered adequate, the Vitamin D Council recommends maintaining levels of 40–80 ng/ml (100–200 nmol/l) and states that anything over 100 ng/ml (250 nmol/l) may be harmful (6, 7). With out magnesium, vitamin D and certain trace minerals then the calcium can damage arteries. 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). It’s believed that very high vitamin D levels may reduce vitamin K2 activity (18, 19). Only one person had true toxicity, at 364 ng/ml (899 nmol/l) (8). It is very hard to overdose on vitamin B12, but you can put a moderate strain on your kidney if excess consumption occurs too often. 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. The BHF has funded research in this area. Even if you follow a healthy diet, you may require supplements to achieve optimal blood levels. Excessive magnesium, potassium and vitamin D can all produce cardiac side effects. This article tells you all you need to know about…. "The inflammation that was curtailed by vitamin D does not appear to be curtailed at higher levels of vitamin D," Amer explained. Terms of Use. 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. 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. This is a detailed article about vitamin D and its health effects. 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. Vitamins D and K are crucial for your health, but some say vitamin D is harmful to those low in vitamin K. Here's a look at the science behind this…, Vitamin D is an important nutrient that may also have benefits for weight loss. However, these symptoms don’t occur in everyone with elevated calcium levels. On the other hand, when vitamin D levels rose beyond the low end of normal, CRP also increased, resulting in a greater risk for heart problems. A deficiency leads to softening of the bones (rickets or osteomalacia). Healthline Media does not provide medical advice, diagnosis, or treatment. In addition, make sure you purchase supplements from reputable manufacturers to reduce the risk of accidental overdose due to improper labeling. How we make vitamin D. We get a little vitamin D from food, but we get most of it from sunlight. See additional information. Toxicity is rare, but can occur with extremely high…. Here are 7 incredibly common nutrient deficiencies. Excessive vitamin D intake frequently results in kidney injury. Some studies and clinical trials link excess intake of calcium supplements with increased risk of heart diseases. Vitamin D is essential for health, but it can be hard to get enough of it from your diet. There are many nutritional supplements that can cause heart palpitations. 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. 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. Too much calcium in the blood can lead to the accumulation of plaque in the arteries. However, if vitamin D intake is excessive, blood calcium may reach levels that can cause unpleasant and potentially dangerous symptoms. But … Summary Stomach pain, constipation, or diarrhea may result from large vitamin D doses that lead to elevated calcium levels in the blood. If you take too many vitamin D supplements your intestines will absorb too much … Hypercalcemia is a condition in which the calcium level in your blood is above normal. It occurs naturally in food and can also be produced by your body when your skin is exposed to sunlight. Moreover, just as vitamin D deficiency is a matter of concern, in the same way vitamin D overdose is also problematic. These symptoms may occur in those receiving high doses of vitamin D to correct deficiency. Symptoms of hypercalcemia , … This is a detailed review of vitamin D toxicity and how much vitamin D is considered too much. 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. Vitamin D3 is produced in response to sun exposure and is found in animal products, whereas vitamin D2 occurs in plants. Vitamin D may have other roles in the body’s immune system and heart health too. Read more: Heart Disease: Causes of a Heart Attack. What’s more, it took a year for their levels to normalize after they stopped taking the supplements (11). Research studies have revealed that having both too little vitamin D and too much of it can negatively impact your slumber. "Those pills could have unforeseen consequences to health even if they are not technically toxic.". It says: “Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). Read about heart disease diagnostic tests, treatments, and heart disease prevention. Stomach pain, constipation, and diarrhea are common digestive complaints that are often related to food intolerances or irritable bowel syndrome. 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 … One recent study looked at data from more than 20,000 people over a 10-year period. CAD is the term for the type of cardiovascular disease with progressive closing of arteries that supply blood to the heart. In fact, this is one of its most important roles. The data corroborates previously published findings showing that people with higher vitamin D blood levels have lower risks of degenerative disease. This can exert a hypertensive effect on the heart muscle, which in turn increases the risk of stroke and heart attack. Summary Although vitamin D is required for calcium absorption, high levels may cause bone loss by interfering with vitamin K2 activity. This can cause vitamin D to build up in the blood. ©1996-2021 MedicineNet, Inc. All rights reserved. Learn about heart disease, heart attack symptoms, and the signs of a heart attack. 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. 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. Importantly, toxicity isn’t common and occurs almost exclusively in people who take long-term, high-dose supplements without monitoring their blood levels. SOURCE: Johns Hopkins Medicine, news release, Jan. 4, 2012. 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. However, it’s also possible to have too much of a good thing. However, too much vitamin D can be detrimental to bone health. Vitamin D is extremely important for your overall health. Because the vitamin is stored in body fat and released into the bloodstream slowly, the effects of toxicity may last for several months after you stop taking supplements (4). You can also eat foods rich in vitamin K2, such as grass-fed dairy and meat. It is unclear why higher levels of vitamin D are not beneficial for the heart, the researchers said. However, in those with excess levels of vitamin D there was a significant increased risk of atrial fibrillation. This is vitamin D3, which is one of the most common types of vitamin D supplements. Its deficiency can result in many problems related to bone development. home/heart center/ heart a-z list/ too much vitamin d could be harmful to heart article. MedicineNet does not provide medical advice, diagnosis or treatment. 4. These symptoms resolved after the child stopped taking the supplements (17). 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. Yet taking too much vitamin D can put you at risk for various health problems, including kidney failure. Vitamin E is a fat-soluble vitamin that can build up in your body if taken in excess amounts. Many side effects of too much vitamin D are related to excessive calcium in the blood. Too much calcium is definitely dangerous for increasing a risk of heart disease. Heartburn, also known as acid reflux, is the result of the reverse flow of acidic stomach contents back into your esophagus. However, there isn’t agreement on an optimal range for adequate levels. 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. It found that only 37 people had levels above 100 ng/ml (250 nmol/l). Vitamin D: The recommended intake for most adults is 15 micrograms.Excess consumption can cause nausea and vomiting, constipation, loss of appetite and … Scientists are warning against the use of certain vitamins amid claims they can increase the risk of heart disease. 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). Vitamin A: The recommended intake for adult males is 900 micrograms, or 700 micrograms for adult females.Too much vitamin A can cause dizziness, headaches and nausea, and in extreme cases, can result in a coma or death. However, if vitamin D intake is excessive, blood calcium may reach levels that can cause unpleasant and potentially dangerous symptoms. This was a whopping 47 times the generally recommended safe upper limit of 4,000 IU per day. Heartburn causes a mild to severe burning sensation in your throat or your chest. 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 in your blood can weaken your bones, create kidney stones, and interfere with how your heart and brain work.Hypercalcemia is usually a result of overactive parathyroid glands. 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. Too much of a good thing. 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). ©1996-2020 MedicineNet, Inc. All rights reserved. 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). In one study in 62 people who received excessively high-dose vitamin D injections, each person experienced kidney failure — whether they had healthy kidneys or existing kidney disease (21). Terms of Use. 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. Oral or intravenous hydration and medication calcium level in your blood is above normal it took a year their! 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