Starting vitamin D supplements helps your body absorb calcium for strong bones, boosts immune function, improves mood, and supports muscle health, especially if you're deficient; initially, you'll feel better by correcting deficiencies, but it takes time, and high doses can cause nausea or weakness, while moderate intake improves energy, reduces inflammation, and strengthens the immune system.
Some side effects of taking too much vitamin D include weakness, dry mouth, nausea, vomiting, and others. Taking vitamin D for long periods of time in doses higher than 4000 IU (100 mcg) daily is possibly unsafe and may cause very high levels of calcium in the blood.
Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). This can weaken the bones and damage the kidneys and the heart. If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people.
Yes, getting too much vitamin D can be harmful. Very high levels of vitamin D in your blood (greater than 375 nmol/L or 150 ng/mL) can cause nausea, vomiting, muscle weakness, confusion, pain, loss of appetite, dehydration, excessive urination and thirst, and kidney stones.
Severely low vitamin D levels can contribute to symptoms like heart palpitations, though other causes should be evaluated. Supplementation is common but high doses may cause side effects such as tinnitus (ringing in the ears).
Symptoms of Vitamin D Excess
Early symptoms of vitamin D toxicity are loss of appetite, nausea, and vomiting, followed by weakness, nervousness, and high blood pressure. Because the calcium level is high, calcium may be deposited throughout the body, particularly in the kidneys, blood vessels, lungs, and heart.
Another vitamin deficiency that can lead to heart pal- pitations is vitamin B12. Similar to a folate deficiency, a lack of vitamin B12 can lead to anaemia and thereby result in heart palpitations, per the ODS. Vitamin D is another supplement that can cause heart palpitations when taken in large amounts.
If you take too much supplemental or prescription vitamin D, it can lead to vitamin D toxicity. The main complication of this is moderate to severe hypercalcemia, which can cause symptoms like vomiting, increased thirst and frequent urination.
That means that if you take too much of it, you won't just pee it out like you would a water soluble vitamin. Instead of being carried out in your body's wastewater, the vitamin will cling to your body fat for later use—which can compound the effects of daily overdosing.
Four Common Mistakes When Taking Vitamin D
Don't take very high doses of vitamin D, as if you do this over a long period of time, it can cause too much calcium to build up in the body, which can weaken the bones and damage the kidneys and heart.
Vitamin D deficiency causes rickets in children and will precipitate and exacerbate osteopenia, osteoporosis, and fractures in adults. Vitamin D deficiency has been associated with increased risk of common cancers, autoimmune diseases, hypertension, and infectious diseases.
It also helps regulate parathyroid functioning, supports nerve health and powers your immune system so you can fight off viruses. Conversely, vitamin D deficiency has been linked to heart disease, depression, multiple sclerosis and type 2 diabetes.
Vitamin D may help improve bone health, immunity, mood, energy levels and decrease inflammation. For most adults, the minimum recommended amount is 600 IU daily.
7 Foods and Supplements to Avoid Mixing With Vitamin D
It has been confirmed that vitamin D has potent anti-inflammatory properties. It contributes to reduction in pro-inflammatory mediators and an increase in anti-inflammatory cytokines. There is also evidence that vitamin D could decrease C-reactive protein (CRP) and affect selected haematological indices.
The impact of Vitamin D on sleep quality and duration
Indeed, evidence from clinical studies on human participants supports a relationship between insufficient levels of Vitamin D and both suboptimal sleep quality and duration [30].
The symptoms include:
Whether weight loss through lifestyle intervention is influenced by vitamin D status remains unknown. A review of randomized clinical trials concluded that there is insufficient evidence to support the contention that vitamin D accelerates weight reduction or fat loss in obesity (12).
A study has found that vitamin D supplements can effectively reduce the severity of generalized anxiety symptoms (18). Low vitamin D levels were linked to increased depression and anxiety symptoms in a study on the role of vitamin D in anxiety (19).
Vitamin D is essential, but getting too much, especially from supplements, can have serious side effects. Too much vitamin D can cause dangerously high calcium levels in the blood, which can lead to symptoms like fatigue, nausea, confusion, and damage to blood vessels.
What's more, taking too much vitamin D can also negatively impact our health as well as our joint pain because our body simply can't cope! If toxic levels of vitamin D build up in the body it can interfere with your body's absorption of calcium.
Often the cause of heart palpitations can't be found. Common causes include: Strong emotional responses, such as stress, anxiety or panic attacks.
People need vitamin B-12 for the brain to work well. If not treated, vitamin B-12 deficiency can lead to issues with the nerves, brain or spinal cord. These might include lasting tingling in the hands and feet or trouble with balance.