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  • Vitamin D toxicity: What if you get too much? - Mayo Clinic
    Vitamin D toxicity is a rare condition that happens when too much vitamin D is in the body The condition can have serious effects on health Another name for it is hypervitaminosis D Cause of vitamin D toxicity Vitamin D toxicity usually is caused by taking large doses of vitamin D supplements
  • Vitamin B-12 - Mayo Clinic
    Vitamin B-12 is a vitamin the body uses to make and support healthy nerve cells It's also used to make healthy red blood cells and the genetic material inside cells called DNA Vitamin B-12 also is called cobalamin Food sources of vitamin B-12 include poultry, meat, fish and dairy products Food companies also may add vitamin B-12 to breakfast cereals Some people may take it as a vitamin by
  • Too much vitamin C: Is it harmful? - Mayo Clinic
    Vitamin C is an essential nutrient, but you can get too much of it If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day The recommended upper limit for children varies by age Getting too much vitamin C from food isn't likely to be harmful But large doses of vitamin C supplements can cause:
  • Cherie B. Nau, O. D. - Doctors and Medical Staff - Mayo Clinic
    Dr Cherie is certified by the American Board of Optometry and the National Board of Optometry She is also a member of the American Academy of Optometry, American Optometric Association, and Association for Research in Vision and Ophthalmology Dr Nau is a member of Scleral Lenses in Current Ophthalmic Practice Evaluation (SCOPE) Dr Nau has been involved in eye research for over 25 years
  • Sean Templeman, O. D. - Doctors and Medical Staff - Mayo Clinic
    Sean P Templeman, O D , is a Senior Associate Consultant He is an optometrist dedicated to providing the highest level of care for the ocular health and wellbeing of patients at Mayo Clinic Dr Templeman has a particular focus and interest in myopia control This involves the study and implementation of treatments that slow the progression of worsening near-sightedness (myopia) in children
  • Osteochondritis dissecans - Symptoms and causes - Mayo Clinic
    Osteochondritis dissecans most commonly affects children who are very active in sports Learn about the symptoms and treatment of this joint condition
  • Barbara K. Tylka, O. D. - Doctors and Medical Staff - Mayo Clinic
    Barbara K Tylka, O D , FAAO, is a board-certified optometrist who leads advanced dry eye care, perioperative management, and ocular surface disease services at Mayo Clinic in Rochester, Minnesota Dr Tylka founded the Mayo Dry Eye Clinic, introducing specialized procedures such as intense pulse light therapy, thermal gland expression, microblepharoexfoliation, advanced punctal occlusion, and
  • Sexually transmitted disease (STD) symptoms - Mayo Clinic
    Sexually transmitted diseases are infections spread mainly by contact with genitals or bodily fluids Also called STDs, STIs or venereal disease, sexually transmitted infections are caused by bacteria, viruses or parasites Sexual activity includes genital touching or sexual intercourse Anyone who


















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