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The Highs and Lows of Summer Sun

To Your Health
July, 2007 (Vol. 01, Issue 07)
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Dietary reference intakes for vitamin D are based solely on the dietary intake that is adequate to prevent bone disease (i.e., rickets or osteomalacia), but there is overwhelming evidence that vitamin D is essential in maintaining overall cellular health and plays a role in other diseases. Based on this research, some researchers are calling for a revision of the recommended intakes for vitamin D. Experts propose that the recommended daily allowance of vitamin D be increased to 1,000 IUs per day during times when sun exposure is insufficient. Note that the 2005 U.S. Dietary Guidelines for Americans now recommends increased intake of vitamin D of 1,000 IU for at-risk populations - older adults, people with dark skin and people exposed to insufficient UVB light. This is not yet reflected in the current dietary reference intakes for vitamin D.



Conditions Associated with Suboptimal
Vitamin D Status


  • Multiple Sclerosis
  • Systematic Lupus Erythematosus
  • Crohn's Disease
  • Rheumatoid Arthritis


  • Hypertension
  • Cardiovascular Disease


  • Psoriasis


  • Diabetes Mellitus


  • Pancreatitis


  • Osteoporosis
  • Osteoarthritis
  • Osteopenia
  • Osteomalacia
  • Rickets
  • Fractures
  • Fibromyalgia


  • Parkinson's Disease
  • Schizophrenia
  • Seasonal Affective Disorder


  • Colon cancer
  • Breast cancer
  • Ovarian Cancer
  • Prostate Cancer
  • Cervical Cancer
  • Bladder Cancer
  • Endometrial Cancer