The overall goal of this randomized controlled trial is to evaluate the effects of a community-based lifestyle behavior intervention (LSBI) that is designed to improve diet, reduce weight and increase physical activity (PA) of Latino women who are predominantly Spanish-speaking immigrants. It is hypothesized that middle-aged overweight/obese Latinas participating in a LSBI conducted by promotoras will demonstrate a greater decrease in BMI and a higher increase in physical activity than those in a control condition, Women in the LSBI also are expected to demonstrate improvements in selected physiologic outcomes (blood pressure [BP], measures of cholesterol and blood sugar, waist circumference), and self-reported lifestyle behaviors (diet, PA). of these participants are also e