Nih Written Report Finds No Bear Witness That Calcium Increases Jeopardy Of Amd

Eating a calcium-rich diet or taking calcium supplements does non appear to increment the take away chances of age-related macular degeneration (AMD), according to the findings of a study past times scientists at the National Eye Institute (NEI). AMD is a leading displace of vision loss as well as blindness amidst people historic menses 65 as well as older inwards the United States. The study findings are published inwards JAMA Ophthalmology.
The findings contradict an before study indicating that high levels of calcium were associated amongst increased prevalence of AMD, but they are consistent amongst unopen to other suggesting that calcium has a protective purpose inwards AMD.
"Although the findings propose that high calcium intake may hold upwards protective, the jury is yet out on whether people should alter their calcium intake to foreclose the onslaught or progression of AMD," said the study's atomic number 82 investigator, Emily Chew, M.D., manager of the Division of Epidemiology as well as Clinical Applications as well as the deputy clinical manager at NEI, which is purpose of the National Institutes of Health.
"These latest findings render no evidence that at that topographic point is a demand to alter the administration of calcium intake for individuals who are already taking calcium for other medical indications," Chew said.
An estimated l per centum of men as well as 65 per centum of women inwards the United States regularly utilisation calcium supplements, which inwards improver to edifice potent bones as well as teeth, are ordinarily used to foreclose as well as process osteoporosis. Recommended daily amounts of calcium are 1,000 mg for adults l as well as younger as well as 1,200 mg for those older than 50.
Chew as well as colleagues investigated the human relationship betwixt calcium intake, past times diet and/or supplements, as well as AMD onset, or its progression. They analyzed information from a previous investigation known every bit the Age-Related Eye Disease Study (AREDS). That landmark multicenter lawsuit funded past times the NEI assessed a arrive at of nutrients as well as their effects on onslaught as well as progression of AMD as well as cataract.
Focusing specifically on calcium, these latest findings looked retrospectively at 4,751 AREDS participants who had been followed for an average of 10 years. Self-reports of calcium intake were collected using a questionnaire bespeak virtually the frequency amongst which people ate calcium-rich foods as well as whether they regularly used calcium supplements inwards the past times year. At baseline, participants had no AMD, intermediate AMD (large deposits known every bit drusen inwards the retina of both eyes), or late-stage AMD inwards i eye.
As participants got older, an association betwixt calcium intake as well as AMD take away chances reduction emerged. People amongst the highest intake of calcium from dietary or supplement sources had a lower take away chances of developing late-stage AMD compared amongst those inwards the lowest calcium intake groups.
Chew emphasized that this proposition of a produce goodness from calcium could hold upwards due to confounding factors. For example, people who are mindful to maximize their calcium intake may hold upwards to a greater extent than probable to besides swallow a salubrious diet, practise as well as accept prescribed medications - all of which could besides lower AMD risk.
Most importantly, the findings underscore the demand for prospective investigations to resolve the number of whether calcium is protective against AMD, as well as whether calcium intake impacts the evolution of drusen or the dissimilar subtypes of AMD, Chew said.
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