Kaiser Permanente researchers studied 1,700 obese women who gave birth between 2000 and 2005; 70 percent exceeded the recommended weight gain. Those gaining 15 to 20 pounds were twice as likely to still carry 10 extra pounds 18 months later, and those gaining 35 or more, eight times.
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Obesity
Weight, obesity and weight loss.
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Obesity
Another Weight Loss Benefit: Improved Kidney Function
Cleveland Clinic researchers pooled 13 studies and found weight loss, whether from diet and exercise or from surgery, reversed some kidney stress measured as protein in urine. Surgery patients were more likely to bring abnormally high filtration rates back down.
Obesity
Obesity may raise prostate cancer risk
Brenda Hernandez and colleagues at the University of Hawaii tracked 83,879 men, 5,554 of whom developed prostate cancer, and found the effect of weight varied by ethnicity: being overweight in older adulthood raised risk among white and Native Hawaiian men but not Japanese men.
Obesity
Is it Possible to be Fit AND Overweight?
Steven Blair of the Cooper Institute is cited saying overweight but fit people have half the death rate of normal-weight people who are unfit. The piece lists the conditions attached — no smoking, 30 minutes of daily activity, no major risk factors — and says sedentary and fit cannot mix.
Obesity
Obesity linked to advanced prostate cancer
A Cancer Epidemiology, Biomarkers and Prevention study of 84,000 men by Brenda Hernandez found those overweight or obese in young adulthood faced higher risk of advanced prostate cancer. Because it is not a trial, it cannot show that obesity causes the added risk.
Diet
Does obesity raise prostate cancer risk?
Brenda Hernandez examined health data on 84,000 men and found those obese or overweight at 21 had lower risk of localized, low-grade prostate cancer, while heavy weight gain in young adulthood tracked with advanced, high-grade disease in white men.
Miscellaneous
Making a dent in the obesity epidemic
An Institute of Medicine and National Research Council report says 16.3 percent of Americans aged two to 19 are obese, and urges local governments to act: zoning limits on fast food near schools, less screen time in after-school programs, and taxes on high-calorie foods and drinks.
Obesity
Obesity may cause "severe brain degeneration" study says
A Human Brain Mapping study of 94 people in their 70s found obese participants had 8 percent less brain tissue than those of normal weight, with losses in the frontal and temporal lobes. Senior author Paul Thompson says obese brains looked 16 years older than lean ones.
Lifestyle
Obesity Tied to Social Networking
A New England Journal of Medicine study found that when a close friend becomes obese, a person is 57 percent more likely to gain weight, even if that friend lives across the continent. Teenagers' BMI also tracks with their peers, though the reason stays unclear.
Obesity
Childhood obesity: Your children are what YOU eat
A study in the International Journal of Obesity found obese mothers were 10 times more likely to have obese daughters and fathers six times more likely to have obese sons. Researcher Terry Wilkin says the gender pattern points toward learned behavior rather than genes.
Disease
Obese people at risk of severe complications and death from H1N1 infection
An editor's note frames a verbatim CDC report on Michigan intensive-care patients with the novel H1N1 virus, predicting officials will urge obese people to get vaccinated and calling that good business for drug makers. The CDC counted 94,512 cases and 429 deaths worldwide as of July 6, 2009.
Lifestyle
Childhood obesity on the rise
Analyzing NHANES data on 12,384 US children aged 2 to 19, researchers found severe obesity, a BMI at or above the 99th percentile, rose more than 300% since 1976 and over 70% since 1994, reaching 3.8% of children in 1999-2004, with rates highest among black children.
Lifestyle
Obesity in the U.S. -- A perfect storm
Childhood obesity rates have more than tripled since 1980, a Trust for America's Health report says. Researchers blame environment and policy as much as calories: fast food outlets crowd neighbourhoods, schools sell sugary food, and fast food filled 23 percent of ads on top teen shows.
Food
Turmeric extract may fight obesity
Tufts researchers fed mice a high-fat diet for 12 weeks with or without curcumin, and the curcumin group gained less weight and carried less fat tissue, which the team attributes to suppressed blood vessel growth in fat. Senior author Mohsen Meydani notes no human studies have been done.
Disease
Childhood obesity linked to stress
An Iowa State study of 1,011 low-income adolescents aged 10 to 15 in Boston, Chicago and San Antonio found 47 percent were overweight or obese, rising to 56.2 percent among those facing four or more stressors such as poor grades, aggression, or drug and alcohol use.
Diet
Why we overeat
Former FDA commissioner David Kessler says the food industry builds foods layered with fat, sugar and salt that light up the brain's dopamine pathway and drive what he calls conditioned hyper-eating, in which people keep eating without hunger. His book is The End of Overeating.
Obesity
Obesity climb tied directly to excessive calorie Intake
Professor Boyd Swinburn told the European Congress on Obesity that rising U.S. obesity since the 1970s traces directly to eating more calories rather than exercising less. In his analysis of 1,399 adults and 963 children, exercise still blunted the gain by about two kilos.
Obesity
Once the weight is lost, low fat diet more appropriate
A University of Maryland study put 26 adults on Atkins, Ornish or South Beach and tracked cholesterol and blood vessel changes; LDL rose on Atkins and fell on the others. Dr. Michael Miller says that once weight is lost, a low-saturated-fat diet serves the heart best.
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