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Eating Almonds May Raise Good Cholesterol Levels

Adding almonds to your diet may boost levels of HDL cholesterol, so-called “good cholesterol,” while also helping your body to remove cholesterol, a small study suggests.

In the study, Penn State researchers compared the levels and function of high-density lipoprotein (HDL cholesterol) in people who ate almonds every day to the HDL levels and function of the same group of people when they ate a muffin instead. The researchers found that while participants were on the almond diet, their HDL levels and functionality improved.

Penny Kris-Etherton, professor of nutrition at Penn State, says the study builds on previous research on the effects of almonds on cholesterol-lowering diets.

“There’s a lot of research out there that shows a diet that includes almonds lowers low-density lipoprotein, or LDL cholesterol, which is a major risk factor for heart disease. But not as much was known about how almonds affect HDL cholesterol, which is considered good cholesterol and helps lower your risk of heart disease,”

Kris-Etherton says.

HDL Cholesterol Function

The researchers wanted to find out if almonds could not just increase the levels but also improve the function of HDL cholesterol, which works by gathering cholesterol from tissues, like the arteries, and helping to transport it out of the body.

“HDL is very small when it gets released into circulation,” Kris-Etherton says. “It’s like a garbage bag that slowly gets bigger and more spherical as it gathers cholesterol from cells and tissues before depositing them in the liver to be broken down.”

Depending on how much cholesterol it has collected, HDL cholesterol is categorized into five “subpopulations,” which range from the very small preβ-1 to the larger, more mature α-1. The researchers hoped that eating almonds would result in more α-1 particles, which would signal improved HDL function.

In the controlled-feeding study, 48 men and women with elevated LDL cholesterol participated in two six-week diet…

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