However, the number of calories you should consume can vary depending on your current weight and activity level.Ĭhart shows daily calorie range for a 40-year-old woman. For men, it means a daily intake of about 1,500 to 1,800 calories. (If you cut 500 daily calories, you'll lose about a pound per week.)įor women, that means consuming about 1,200 to 1,500 calories a day. This usually means cutting 250 to 1,000 calories out of your daily diet. To accomplish this weight loss, most experts interviewed by Live Science recommended that you shed 0.5 to 2 lbs. Losing even more weight is associated with greater health benefits, so the guidelines recommend that people start out with a goal of losing 5 to 10 percent of their body weight over six months. Research suggests that losing 5 percent of body weight results in a 3-mmHg drop in systolic blood pressure (the top number in a blood pressure reading, which is a measure of the pressure in the arteries when the heart beats) and a 2-mmHg drop in diastolic blood pressure (the bottom number in a blood pressure reading, which is a measure of the pressure in the arteries between heartbeats), according to the 2013 guidelines. Obese people who lose as little as 3 to 5 percent of their body weight improve their health. "It's common to gain weight with age, and weight maintenance is much easier than weight loss, so the best plan for these patients is to maintain their weight, eat healthier and exercise more - but not to focus on weight loss," Cohen said. However, additional weight gain could lead to problems, experts said. People who are normal weight, or overweight and do not have any additional risk factors for heart disease, should focus on avoiding weight gain, rather than losing weight, the guidelines say, because there is no strong evidence that weight loss provides health benefits for these people. The guidelines are based on a rigorous review of recent scientific studies. The 2013 guidelines were put together by an expert panel from the American Heart Association, the American College of Cardiology, and the Obesity Society, and were reviewed by the National Heart, Lung, and Blood Institute. Weight loss is also recommended if you're overweight and have other risk factors for heart disease, such as diabetes, high blood pressure, high cholesterol levels, or a waist circumference greater than 35 inches (88 centimeters) for women and 40 inches (102 centimeters) for men.
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If your BMI places you in the obese category, it's time to lose weight, according to the most recent (2013) weight management guidelines from the American Heart Association and other professional organizations. For example, people with a high amount of muscle mass can have a high BMI without being overweight or obese. Risks go up as a person climbs this BMI ladder, with numbers between 25 and 29.9 considered overweight, and BMIs of 30 or greater considered obese, according to the NIH.Īlthough BMI is easy to calculate, it is not a perfect measure of body fatness. The goal with BMI is to be what the National Institutes of Health considers "normal." The lowest risk for health conditions related to weight has been tied to a BMI between 18.5 and 24.9 (labeled "normal weight"). For example, a person who is 5 feet 7 inches (1.7 meters) and weighs 172 lbs. That's why one of the most widely used gauges of whether a person needs to shed pounds is body mass index (BMI) - an indicator of body fatness developed by Belgian statistician Adolphe Quetelet in 1832 that's based on the ratio of height to weight. (Image credit: by Karl Tate, Infographics artist) (On the other hand, losing weight can relieve such burdens on the body, leading to health benefits, including reduced blood pressure, cholesterol and blood sugar.)Ĭhart shows relationship of healthy weight and height. In addition, the more body fat a person carries, the more blood is needed to provide the tissue with oxygen and nutrients, resulting in higher blood pressure. More fat in the neck has been tied to sleep apnea, while compounds released by fat cells may increase the chances of developing type 2 diabetes. Though science has yet to establish a surefire link between obesity and each health risk, the extra fat tissue seems to be the biggest culprit.
The extra pounds come with baggage they increase the likelihood of many health conditions, including the following: The adult obesity rate in 2013-2014 was the highest ever for the nation, and equates to more than 78 million people. Over the past 15 years, the nation's obesity rate rose by 24 percent (7.2 percentage points) among adults, from 30.5 percent in the years 1999-2000 to 37.7 percent in 2013-2014, according to a report from the Centers for Disease Control and Prevention published in November 2015. Obesity is a growing problem in the United States.
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Should you lose weight? Find out below how to calculate your BMI.
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