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Can Excessive Vitamin D Impair The Hair Growth?

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Posted on Thu, 5 Feb 2015
Question: Can too much Vitamin D stop hair growth. I am 70 take minimum thyroid meds and take a 1200/600 Calcium and D and an additional 5000 units of D.
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Answered by Dr. Shehzad Topiwala (1 hour later)
Brief Answer:
No

Detailed Answer:
Excess vitamin D is not known to stop hair growth.

I see you are on thyroid medications. Just make sure your thyroid blood tests are fine because an inadequately treated thyroid can cause hair problems.

The 1200/600 calcium/D preparation you take seem all right. An individuals' daily dietary calcium intake determines whether or not (s)he needs supplements, and if yes,what dose of supplements.

So you may wish to see a dietitian to learn what is your current dietary calcium intake on a daily basis. If it is less than 1200 mg daily then you need to either further increase your dietary intake or increase the dose of calcium in your supplements.

Regarding the daily 5000 IU vitamin D supplement, it is important to go by blood levels. A 25 hydroxy vitamin D blood test will provide a fair indication whether or not you need this dose of vitamin D in supplements.
Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Shehzad Topiwala

Endocrinologist

Practicing since :2001

Answered : 1663 Questions

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Can Excessive Vitamin D Impair The Hair Growth?

Brief Answer: No Detailed Answer: Excess vitamin D is not known to stop hair growth. I see you are on thyroid medications. Just make sure your thyroid blood tests are fine because an inadequately treated thyroid can cause hair problems. The 1200/600 calcium/D preparation you take seem all right. An individuals' daily dietary calcium intake determines whether or not (s)he needs supplements, and if yes,what dose of supplements. So you may wish to see a dietitian to learn what is your current dietary calcium intake on a daily basis. If it is less than 1200 mg daily then you need to either further increase your dietary intake or increase the dose of calcium in your supplements. Regarding the daily 5000 IU vitamin D supplement, it is important to go by blood levels. A 25 hydroxy vitamin D blood test will provide a fair indication whether or not you need this dose of vitamin D in supplements.