In a study that included over 6,500 American youth ages 10-14, having a television in the bedroom was a significant predictor of weight gain.  By statistical analysis, bedroom televisions account for over 15 million pounds of excess weight gain per year in American adolescents. (And over half of all teens in the US have a TV in their bedrooms!) JAMA Pediatrics Online, March 3, 2014

In a study that included over 66,000 pregnant women, those whose diets included the most vegetables, fruits, whole grains, and water were significantly less likely to experience pre-term delivery. (Pre-term delivery accounts for 75% of all newborn deaths.)  British Medical Journal, March 2014, DOI 10.1136/bmj.g1446.

In a nationally representative study sample of 8,210 high school students, energy drink consumption was positively linked to depression as well as greater alcohol and marijuana use.  Preventive Medicine, 2014; 62:54