With the obesity epidemic showing no signs of abating, there is ongoing interest in altering energy balance (i.e., decreasing energy intake and/or increasing energy expenditure) to promote weight, specifically fat, loss. However, short- and long-term outcomes of, and in compliance with, decreasing energy intake are variable, and reports of weight regain are common. There is thus increasing interest, both at the lay public and scientific levels, in lifestyle modification to promote weight loss in the absence of energy restriction.

We invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand the relation between dietary modifications and body weight, body mass index (BMI), and/or body composition (including fat mass), in the absence of dietary energy restriction. We welcome papers on humans of any age and health status including those free of diagnosed disease, as well as those with diabetes, heart disease, and so forth. Potential topics include, but are not limited to:

• Recent developments in manipulation of macronutrients, including protein, fat, carbohydrate or derivatives, or supplements thereof
• Recent developments in manipulation of dietary fiber
• Recent developments in manipulation of micronutrients including dietary or supplemental vitamin D and calcium
• Recent developments in manipulation of other dietary components (e.g., caffeine, capsaicin, various teas, and CLA) or food groups (e.g., dairy)
• Recent developments in manipulation of exercise in combination with one of the aforementioned dietary manipulations

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jnume/guidelines.html. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: