Scientists from Rutgers found vitamin D could improve memory performance in older people. However, when taking too much vitamin D supplements, it could slow down people’s reaction times.
Slower reaction times may increase people’s fall and fracture risk.
The research is published in The Journals of Gerontology: Series A and was conducted by Sue Shapses et al.
Vitamin D is important for bone health. It can be obtained through sun exposure and supplements. Previous studies found that vitamin D has a big impact on how the body functions.
Some studies showed that vitamin D plays a role in cognition and the normal function of the brain.
In the current study, the team examined the impact of vitamin D on cognitive function using computers. They examined three groups of overweight and obese women between 50 and 70 years old.
The first group took the recommended daily dose of 600 international units (IU) of vitamin D each day for a year. The second group took 2,000 IU per day. The third group took 4,000 IU per day.
All of the women were encouraged to lose weight during the study.
The researchers found in women who took 2,000 IU of vitamin D per day, their memory and learning performance was influenced.
However, these women’s reaction time showed a trend to be slower at 2,000 IU daily and much slower at the 4000 IU dosage.
Previous research has shown that vitamin D supplementation at about 2,000 IU daily or more was linked to a higher risk of falls.
In addition, the team suggests that 4,000 IU vitamin D a day may be dangerous to older people because it can disrupt walking or one’s balance.
The team says further work is needed to see whether reaction time is related to rates of falls and injuries in people with a high risk.
In addition, more research is needed to examine how different doses of vitamin D supplementation may influence women and men separately.
If you care about memory, please read studies about a big cause of poor memory in older people, and this diet could strongly prevent memory loss and dementia.
For more information about supplements, please see recent studies about new way to treat vitamin D deficiency, and results showing this vitamin could help protect against respiratory infections.
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