A healthy, calorie-controlled diet to reduce excess weight gain during pregnancy is not only safe for mother and baby but also can improve pregnancy outcomes compared with exercise alone or a combination of the two, a meta-analysis showed. The analysis of randomized trials conducted among more than 7,000 women showed that a calorie-restricted healthy diet limited gestational weight gain by a mean difference of -3.84 kg, or about 8.4 lbs. (95% CI 11.5 lbs. to 5.4 lbs., P