New UW Health Study: High-dose vitamin D does not support bone – Fox 28: South … – Fox 28

MADISON (WKOW) — A new UW Health study shows older women do not need to take high levels of vitamin D to increase their bone density.

The study was published earlier this month in JAMA Internal Medicine. 

Lead Study Investigator Dr. Karen Hansen says up until now guidelines for Vitamin D usage were all over the map.

“So many of my patients come in and ask me, what should I be doing with my vitamin D?”

Armed with that question, Dr. Hansen began her study.

“We identified 230 women for the trial,” Dr. Hansen said.  “Each participated for one year.”

All had similar vitamin D levels going into the study.  By the end of the study, post-menopausal women taking high dose Vitamin D had some surprising results. 

“We found that the high dose vitamin D arm did have a small increase in calcium absorption,” Dr. Hansen said.

“It was 1 percent.”

Dr. Hansen says bone density didn’t change and there was no difference in the number of falls or the ability to exercise. 

“High Dose Vitamin D didn’t yield any clinical benefits.  But on the other hand, what it does tell us the Institute of Medicine has it right.”

Dr. Hansen says instead of doubling or tripling your daily vitamin D pills, what’s in a single supplement is probably more than enough.

“Our recommended daily allowance for vitamin D is 600 IU, pop it up to 800 IU when you get to 70.”


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