NEW YORK, June 27: Helping heavy people lose weight is typically an expensive endeavor, but new research suggests starting them on a basic weight-loss program – and only adding more intensive help if they need it – could be cheaper and still effective. So-called stepped-care is used all the time in medicine, said Robert Klesges, a preventive medicine researcher from the University of Tennessee Health Science Center in Memphis, who has studied the approach. (agencies)