Obesity and the facts

Global Strategy on Diet, Physical Activity and Health

10 facts on obesity
Project EAT pdf This survey about eating, physical activity, and weight-related behaviors was completed by young people attending middle school or high school during the school year. UK obesity levels were remarkably constant and small for decades. Was there one thing that happened that could explain the sudden and dramatic increase in obesity? And another adipokine, adiponectin—which is less abundant in obese people than in those of normal weight—may have antiproliferative effects. BMI provides a more accurate measure of obesity than weight alone, and for most people it is a fairly good although indirect indicator of body fatness. Nearly a third of non-elderly adults in Colorado, Idaho, and New Hampshire met exercise guidelines.

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Childhood Obesity Rates Are Still Rising

About 24 percent of adults last year said they exercise enough each week to meet government recommendations for both muscle strengthening and aerobic exercise, according to a large annual health survey.

That was up from 21 percent in The same survey says 31 percent of adults indicated they were obese last year, up slightly. Another, more rigorous government study has also found adult obesity is inching up. Some experts think the findings may reflect two sets of people — the haves and have-nots of physical fitness, so to speak. The numbers come from an in-person annual national survey that for more than 60 years has been an important gauge of U.

Roughly 35, adults answer the survey every year, including questions about how often, how long and how vigorously they exercise in their leisure time.

The survey gives a good sense of trends, but it's not perfect. People generally overstate how much they exercise, just as they overstate their height and lowball their weight, Jakicic said.

Ten-year-old federal recommendations say adults should do weightlifting or other muscle-strengthening exercise at least twice a week. They also advise adults to do at least 75 minutes a week of high-intensity aerobic activity, such as running, or minutes of moderate-intensity exercise, such as brisk walking, or a combination of the two. Types of Cancer Treatment. A to Z List of Cancer Drugs. Questions to Ask about Your Treatment.

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How many cancer cases may be due to obesity? Does avoiding weight gain or losing weight decrease the risk of cancer? How does obesity affect cancer survivorship? What research is being done on obesity and cancer? Obese people often have chronic low-level inflammation , which can, over time, cause DNA damage that leads to cancer.

Overweight and obese individuals are more likely than normal-weight individuals to have conditions or disorders that are linked to or that cause chronic local inflammation and that are risk factors for certain cancers For example, chronic local inflammation induced by gastroesophageal reflux disease or Barrett esophagus is a likely cause of esophageal adenocarcinoma. Obesity is a risk factor for gallstones , a condition characterized by chronic gallbladder inflammation, and a history of gallstones is a strong risk factor for gallbladder cancer Chronic ulcerative colitis a chronic inflammatory condition and hepatitis a disease of the liver causing inflammation are risk factors for different types of liver cancer Fat tissue also called adipose tissue produces excess amounts of estrogen, high levels of which have been associated with increased risks of breast, endometrial, ovarian, and some other cancers.

Obese people often have increased blood levels of insulin and insulin-like growth factor -1 IGF This condition, known as hyperinsulinemia or insulin resistance, precedes the development of type 2 diabetes.

High levels of insulin and IGF-1 may promote the development of colon, kidney, prostate, and endometrial cancers Fat cells produce adipokines, hormones that may stimulate or inhibit cell growth. For example, the level of an adipokine called leptin , which seems to promote cell proliferation , in the blood increases with increasing body fat. And another adipokine, adiponectin—which is less abundant in obese people than in those of normal weight—may have antiproliferative effects.

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