Vitamin D at high doses, such as 4000 IU daily, can lead to a range of symptoms, especially if your individual needs or baseline nutrient levels aren’t adequately considered. Your described symptoms might indeed relate to changes in calcium and magnesium levels, as vitamin D helps regulate calcium. An increase in calcium, alongside a decrease in magnesium, can impact nerve function and potentially contribute to what you’re describing as nerve hypersensitivity. With elevated calcium at 2.50 and reduced magnesium, there’s a potential for symptoms like anxiety, irritability, and unusual sensations on the skin, including burning or cold feelings due to nerve irritability. Low magnesium is critical because it’s involved in over 300 enzymatic processes in the body, including nerve and muscle function. Iron deficiency could also be contributing to your symptoms, particularly with lightheadedness and increased heart rate, given that iron is crucial for carrying oxygen in your blood. Your serum iron level of 5.67 does suggest a deficiency despite normal hemoglobin, possibly indicating early stages of iron deficiency anemia – though the body might be compensating to keep hemoglobin within range for now. This deficiency can exacerbate feelings of anxiety and cold sensitivity. It would be prudent to consult your healthcare provider for a comprehensive assessment. They might suggest a temporary pause in high-dose vitamin D and correction of deficiencies, like magnesium and iron. Magnesium can be increased through dietary sources like nuts, seeds, and leafy greens, or supplements at dosages guided by a healthcare professional. Iron levels might improve with dietary intake of iron-rich foods or supplementation under medical supervision. These steps might help rebalance your biochemical environment and reduce symptoms. Meanwhile, if the burning or cold sensations worsen, or are accompanied by significant pain or neurological symptoms, seek prompt medical attention to rule out other causes.
Yes, both low magnesium and low iron can contribute to nerve hypersensitivity, anxiety, palpitations, cold sensitivity, and burning or tingling sensations, and vitamin D supplementation can sometimes worsen magnesium deficiency in susceptible individuals. Your normal hemoglobin with very low serum iron and high TIBC suggests iron deficiency without anemia yet, which can still cause significant symptoms. Please seek evaluation from a physician or neurologist to review your electrolyte levels, iron studies, symptoms, and decide on safe supplementation and treatment.
Hello Mirka By going through your history and evaluation of your health status I must say that - 1) Vitamin D, Magnesium, and Calcium: - High-dose vitamin D can increase calcium absorption, which explains your raised calcium levels. - Vitamin D supplementation can sometimes lower magnesium, especially if your intake isn’t enough to keep up. Magnesium is crucial for nerve function, and low levels can cause symptoms like burning, tingling, and even anxiety. 2) Iron Deficiency: - Your serum iron is quite low, and high TBIC/UIBC means your body is trying to grab more iron, which is a classic sign of iron deficiency—even if your hemoglobin is still normal for now. - Iron deficiency can cause lightheadedness, cold sensitivity, palpitations, and sometimes nerve symptoms. 3) Nerve Hypersensitivity: - yes Both low magnesium and low iron can contribute to nerve hypersensitivity, burning sensations, and mood changes. - The improvement in anxiety after stopping vitamin D suggests your symptoms were likely related to the changes in magnesium and calcium balance.
Suggestions and treatment - 1) avoid over use of vit d3 and take only under doctor prescription 2) For Iron and magnesium consult me in personal for a balanced diet rich in iron and magnesium ( like leafy vegetables, nuts , seafood, etc )
Thank you
Hello dear See after careful evaluation it seems definitely vitamin d toxicity due to overdose It involves dizziness, headache and irritation too. Usually they start at 10,000 Iu but as per clinical history excess calcium causes problem with tremor and palpitations of heart Iam suggesting some tests for better clarification Serum vitamin d Serum calcium ECG Emr Urine calcium Kindly get these tests done for exact clarification and share result with general physician ( medicine) or endocrinologist for further evaluation Please donot take any medication without consulting the concerned physician Regards
low iron AND vitamin-D–induced magnesium depletion can absolutely cause the nerve hypersensitivity, burning/cold sensations, anxiety, and fast heart rate you experienced.
Your symptoms improving after stopping vitamin D strongly supports this.
Hi Mirka, your symptoms are most likely from a combination of low magnesium and low iron, both of which can worsen after taking high-dose Vitamin D.
Vitamin D increases calcium and uses up magnesium, which can cause burning/tingling, anxiety, fast heartbeat and cold sensations. Your very low iron levels also add to lightheadedness, cold intolerance and nerve sensitivity.
Next, what should you do is, get a physical consultation done with your nearest Physician, and he/she will prescribe you iron and magnesium supplements according to your requirement. Don’t rely on online consultation for this specific issue.
Feel free to reach out again.
Regards, Dr. Nirav Jain MBBS, DNB D.Fam.Med
