JACKSON, Miss. (WJTV) – Childhood obesity is becoming an epidemic in America. The percentage of kids affected by obesity has tripled in the last 50 years. According to Medicine.Net, a whopping 18 percent of children ages 2-19 are considered obese (compared to 5 percent in the 1970s and 1980s). That’s 12,700,000 children! Now researchers have found something that could help prevent childhood obesity, starting before your child’s birth. 12 News Anchor Melanie Christopher reports.