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WASHINGTON nike air max 98 wholesale , March 7 (Xinhua) -- What's driving the rise of obesity in the United States? A group of economists argued in a recent study that big-box grocers, warehouse clubs and fast-food restaurants are key contributors to the county's obesity epidemic.


General economic factors, ranging from unemployment to income, as well as the monetary or time costs of eating and physical activity account for 43 percent of the rise in obesity, according to a recent study published by the U.S. National Bureau of Economic Research, as the adult obesity rate in the United States has surged from 13 percent in 1960 to 35 percent in 2012.


"Supercenterwarehouse club expansion and increasing numbers of restaurants are the leading drivers of the results," the study concluded. "We show that supercenterwarehouse club density increases the probability of weight loss attempts cheap nike air max plus , raising the possibility that cheap food from these retailers triggers self- control problems."


The study suggests that the rise of supercenters and warehouse clubs, like Walmart and Costco, may impact Americans' eating habits as they make calorie-rich food cheaper and more accessible, and save customers a lot of time.


"Food's gotten cheaper and more readily available, so we eat more of it. It's really simple," said Charles Courtemanche, co- author of the study and a health economist at Georgia State University nike air max plus wholesale , in an interview with National Public Radio (NPR). "At least a sizable portion of the rise in obesity can be characterized as response to economic incentives."


Obesity, defined as a body mass index (BMI) of at least 30, leads to adverse health conditions such as heart disease, diabetes, high blood pressures and stroke.


Obesity has become a major public health concern in the United States as the nation has one of the highest obesity rates in the world, according to the Organization for Economic Cooperation and Development (OECD).


KAMPALA, Aug. 19 (Xinhua) -- Uganda's star striker Yunus Ssentamu has refused to return to Tunisia's CS Sfaxien because of a contractual dispute.


The Tunisian top side signed the 20-year-old striker early this year after his performance at the Democratic Republic of Congo (DRC) side AS Vita Club last season.


"I have been in Uganda for some time now and will not be returning to Tunisia unless the club pays my sign-on fees as we had agreed nike air max plus 97 wholesale ," the player told Xinhua on Wednesday.


Haruna Kyobe, the club secretary to Ssentamu's former Ugandan side SC Vipers, confirmed that the player is currently training with them to keep fit.


Ssentamu scored two goals including one against CS Sfaxien to help DRC's AS Vita Club reach the 2014 Confederation of African Football (CAF) Champions League finals where they lost to Algeria's ES Setif. CS Sfaxien also won the 2013 CAF Confederations Cup.