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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

Hello! A friend of mine has a grandson 3 years old who has autism, it was found out when he was 1 year old, he weighs 22 kilos, is on some medication, I would like to know how much vitamin D he could take a day! Thank you!!!

Ask the Vitamin D Council

Asked by  iveteabegg76895700 on March 20, 2015


  • IAW
     IAW on

    At his time Dr. Cannell is the best person to respond to the Autism questions. Sometimes Dr. Cannell is very busy so it may take him a little while to respond. So please be patient and keep checking back every few days, at least, for an answer.

    Answered by  IAW on