The decrease in AGEs on the vegan diet was associated with an average weight loss of 13 pounds, compared with no change on the Mediterranean diet.
The reduction of dietary AGEs on the low-fat vegan diet came mainly from excluding the consumption of meat (41%), minimizing the consumption of added fats (27%), and avoiding dairy products (14%).
“The study helps bust the myth that a Mediterranean diet is best for weight loss,” says lead study author Hana Kahleova, MD, PhD, director of clinical research at the Physicians Committee for Responsible Medicine. “Choosing a low-fat vegan diet that avoids the dairy and oil so common in the Mediterranean diet helps reduce intake of harmful advanced glycation end-products leading to significant weight loss.”
AGEs may be ingested through the diet, and animal products are generally higher in AGEs than plant foods. Cooking with high heat under dry conditions, such as grilling, leads to significant formation of AGEs, especially in animal-derived foods, which are also rich in fats. High amounts of AGEs circulating in the body can contribute to insulin resistance, which can lead to weight gain. AGEs are also linked to inflammation and oxidative stress, which contribute to chronic diseases like heart disease and type 2 diabetes.
The new research is a secondary analysis of a previous Physicians Committee study comparing a low-fat vegan diet to a Mediterranean diet. The study randomly assigned participants to either a low-fat vegan diet, which consisted of fruits, vegetables, grains, and beans, or a Mediterranean diet, which focused on fruits, vegetables, legumes, fish, low-fat dairy, and extra virgin olive oil, for 16 weeks. Neither group had a calorie limit.
Participants then went back to their baseline diets for a four-week washout period before switching to the opposite group for an additional 16 weeks. Dietary AGEs were calculated based on self-reported dietary intake records. AGE scores were assigned to each food item, using a published database of AGE content.
“Our research shows that you can use the power of your plate to lose weight with a low-fat vegan diet that’s rich in fruits, vegetables, grains, and beans and low in AGEs,” adds Dr. Kahleova. “It’s a simple and delicious way to maintain a healthy weight and fight chronic disease.”
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