Obesity increases young adults' risk of kidney disease

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Many obese young adults in the United States don't know they're at increased risk for kidney disease, researchers report.

Elevated albumin levels

"Even though chronic kidney disease typically manifests in older people, the disease can start much earlier but often is not recognised early on," said study leader Dr Michal Melamed, an associate professor of medicine at Albert Einstein College of Medicine, in New York City.

Melamed's team analysed data from nearly 7,000 adults, aged 20 to 40, across the United States. The researchers found that 11 percent of obese Mexican-Americans and about 6 percent of obese whites and blacks had elevated levels of the protein albumin in the urine.

Read: A smaller belly, less deli may reduce kidney disease risk

This condition, called albuminuria, is a sign that the kidneys are not functioning normally. It puts you at increased risk for chronic kidney disease, the researchers said.

Among young adults with albuminuria, less than 5 percent had been told they had kidney disease, according to the findings published online in the journal PLoS One.

"Clearly, clinicians and public health officials need to do more to identify and treat young people at risk for early progressive kidney disease so they can adopt the behavioural changes to prevent [kidney disease] from occurring," Melamed said in an Albert Einstein news release.

Read: Chronic kidney disease on the rise

About one-third of Americans are at risk for chronic kidney disease during their lifetime, typically when they're older.

Abdominal obesity

"Because treatment options for [chronic kidney disease] are limited, prevention is the best approach for those at risk," Melamed added. "A healthier lifestyle in young adults will go a long way toward promoting kidney health later in life."

Previous research has suggested that abdominal obesity may harm kidney function earlier than high blood pressure and diabetes, both of which are associated with obesity.

Abdominal obesity is defined as having a waist circumference of 35 inches or more for non-pregnant females and 40 inches or more for males, according to the U.S. National Heart, Lung, and Blood Institute.

Read more:

End stage kidney failure

Acute Kidney failure (ARF)

Kidney dialysis

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