Almost 2800 adults were randomized to a lifestyle intervention (diet and exercise), metformin (medication), or placebo groups and followed for 15 years. The incidence of diabetes was reduced by 27% in the lifestyle group and 18% in the metformin group relative to the placebo group.
PositiveTip: Make healthy diet and exerciase choices every day. They play a major role in preventing disease!
Reference: http://www.thelancet.com/journals/landia/article/PIIS2213-8587(15)00291-0/abstract