SAN FRANCISCO - Steve Jobs, after months of concern about his health and weight loss, said he is suffering from a nutritional ailment and plans to remain Apple Inc.’s chief executive during his treatment.

Washington, Jan 7 : Contrary to the common belief, physical activity may not be as important for weight loss as is diet, says a new study.

AcaiBerry-Products.com says strong demand for pure organic freeze-dried acai berry has led to some product shortages. The company publishes acai berry information and news on its website and blog and operates an international online shopping store specializing in organic acai berry products.

Though better nutrition coupled with exercise has long been the favored prescription for losing weight and avoiding obesity, a new study suggests diet actually plays the key role.