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Cutting about 300 calories a day can benefit your heart, study experience



For two years, participants in the study on the calorie restriction diet lowered their blood pressure and levels of bad cholesterol (LDL) and saw a 24% drop in concentrations of triglycerides, one type of fat in the blood. The study was published in The Lancet Diabetes & Endocrinology magazine on Thursday.
A decrease of 300 calories daily refers to the average decrease in calories obtained by the study participants, says Dr. William Kraus, a distinguished professor at Duke University School of Medicine in Durham, North Carolina, who was senior author of the study.

"Exercise and diet are the two most profound and easily accomplished efforts we have in our environment that can reduce our cardiovascular diseases," he said. "There are no five drugs on the market when combined that can approach what we saw in this study from moderate calorie restriction."

How Calorie Restriction Can Protect the Heart

The study included 21

8 healthy adults aged 21 to 50, in three clinical centers across the United States. Between 2007 and 2010, 143 of the adults were randomly assigned to start a 25% calorie restriction diet – meaning they were trying to reduce 25% of what they normally use – while the remaining 75 adults followed an "ad libitum" or "feed food", meaning that they ate normally.

Adults in the calorie restriction group reduced their caloric intake by 11.9%, not the intended 25%, the researchers noted, ranging from 2,427 calories a day to 2,707 – a decrease of 297 calories.

"This trial was going on for two years, so some participants could keep the restrictions and others were not as successful," Kraus said.

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In each group, the researchers monitored carefully monitor each adult's cholesterol levels, blood pressure and triglyceride concentrations over a two-year period. These factors can affect your risk of heart disease.

About 610,000 people die each year in the heart of the United States, or 1 in every four deaths, according to the US Center for Disease Control and Prevention. [19659004] The researchers found that in the calorie restriction group, levels of total cholesterol and LDL cholesterol decreased significantly after one year, and that change was maintained for two years, while the changes were very small in the ad libitum group.

The researchers also found that in the calorie restriction group, lowering of blood pressure was evident as early as six months, achieving statistical significance by one year and remained below the duration of the study.

The study is the first of its kind to investigate the potential impact of calorie restriction on health hazardous to healthy, non-obese young and middle-aged adults, the researchers wrote in the study.

The US Food Guidelines for 2015-2020 note that a mad woman needs estimated 1600-2400 calories per day and adult men need about 2000 to 3000 depending on age, height, weight and level of physical activity.
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"It would be interesting to see what happens to contestants in this study two years after the study stopped if they maintain these habits or not, says Dr. Subbarao Myla, director of Cardiac Cath Labs at Hoag Memorial Hospital Presbyterian in Newport Beach, California, who was not involved in the study.

Myla , who called the study "well-designed," pointed out that during the study, participants were given behavioral capabilities to help them adhere to their diets

"All diet plans emphasize two-level sub-control – what you put on the plate and how much you consume," He said. "Having a life coach who can monitor, produce and tie is very important to maintain change."

The study had some limitations, among others Other that more research is needed to determine whether similar results would occur among a larger and more diverse group of people or over a longer period of time. In addition, the study did not include clinical measurements of atherosclerosis or plaque buildup in adult arteries.

"Finally, none of this works without controlling activity," says Myla, referring to physical activity or exercise. "The study did not address measures that are very difficult to control for. Weight loss is best complemented and achieved through increased activity."

"Food selection shaped by the habitat environment"

] Calorie restriction can be a useful tool to help control weight and slow the aging process, but it is unlikely that it will not cure the global obesity epidemic, Dr. Frank Hu, professor and chair of the Department of Nutrition at Harvard TH Chan School of Public Health in Boston, wrote in an editorial published with the new study on Thursday.

"Since individual food choices are shaped by the habitat environment, the long-term sustainability of calorie restriction and its benefits with body weight can be easily undermined," Hu wrote in the editorial board.

"Improving the habitat environment by making healthy food choices accessible, affordable and the norm while reducing the availability of extremely processed and very tasty foods is crucial to supporting healthy food choices," he wrote. "To this end, policy solutions, including sugar taxes, financial incentives to produce and buy healthy foods, food coding, and better regulation of food marketing, are needed to improve the global food environment."


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