One Avocado A Day Helps Lower ‘Bad’ Cholesterol For Heart Healthy Benefits

One Avocado A Day Helps Lower ‘Bad’ Cholesterol For Heart Healthy Benefits from Natural Blaze

Move over, apples — new research from Penn State suggests that eating one avocado a day may help keep “bad cholesterol” at bay.

According to the researchers, bad cholesterol can refer to both oxidized low-density lipoprotein (LDL) and small, dense LDL particles.

In a randomized, controlled feeding study, the researchers found that eating one avocado a day was associated with lower levels of LDL (specifically small, dense LDL particles) and oxidized LDL in adults with overweight or obesity.

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“We were able to show that when people incorporated one avocado a day into their diet, they had fewer small, dense LDL particles than before the diet,” said Penny Kris-Etherton, distinguished professor of nutrition, who added that small, dense LDL particles are particularly harmful for promoting plaque buildup in the arteries. “Consequently, people should consider adding avocados to their diet in a healthy way, like on whole-wheat toast or as a veggie dip.”

Specifically, the study found that avocados helped reduce LDL particles that had been oxidized. Similar to the way oxygen can damage food — like a cut apple turning brown — the researchers said oxidation is also bad for the human body.

“A lot of research points to oxidation being the basis for conditions like cancer and heart disease,” Kris-Etherton said. “We know that when LDL particles become oxidized, that starts a chain reaction that can promote atherosclerosis, which is the build-up of plaque in the artery wall. Oxidation is not good, so if you can help protect the body through the foods that you eat, that could be very beneficial.”

While previous research demonstrated that avocados could help lower LDL cholesterol, Kris-Etherton and her colleagues were curious about whether avocados could also help lower oxidized LDL particles.

The researchers recruited 45 adult participants with overweight or obesity for the study. All participants followed a two-week “run-in” diet at the beginning of the study. This diet mimicked an average American diet and allowed all participants to begin the study on similar nutritional “footing.”

Next, each participant completed five weeks of three different treatment diets in a randomized order. Diets included a low-fat diet, a moderate-fat diet, and a moderate-fat diet that included one avocado a day. The moderate-fat diet without avocados were supplemented with extra healthy fats to match the amount of monounsaturated fatty acids that would be obtained from the avocados.

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