The study found that lipoic acid supplements reduced atherosclerotic lesion formation in two types of mice that are widely used to study cardiovascular disease, by 55 percent and 40 percent, respectively. The supplements were also associated with almost 40 percent less body weight gain, and lower levels of triglycerides in very low-density lipoproteins.
As a result, the authors concluded that “lipoic acid may be a useful adjunct in the prevention and treatment of atherosclerotic vascular diseases.”
“We are excited about these results, particularly since the supplements of lipoic acid appear to provide several different mechanisms to improve cardiovascular health,” said Balz Frei, professor and director of the Linus Pauling Institute. “They are helping in a fundamental way to reset and normalize metabolic processes, in ways that could help address one of the most significant health problems in the Western world.
“These findings also reinforce the need for more comprehensive human studies,” Frei said. “That will be the next step in our research, in double-blind, randomized, clinical studies during the next five years with Oregon Health and Science University.”
Alpha lipoic acid is a naturally occurring nutrient found at low levels in green leafy vegetables, potatoes and meats, especially organ meats such as kidney, heart or liver. The amounts used in this research would not be obtainable by any normal diet, researchers said, and for human consumption might equate to supplements of about 2,000 milligrams per day. Even at low, normal, dietary levels, the compound can play a key role in energy metabolism.
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