We’ve all fallen prey to the manipulation of advertising. Ads effect how we buy, spend and consume, and in some cases, the impact of advertisements becomes larger than life. A new study published last week in The Lancet and Lancet Global Health on obesity, ties advertising to consuming habits around the world. The study proves that as countries become richer, advertising—junk food and all—follows. In higher income countries, advertising soda and sugary cereals leaves young children with poor health conditions. Meanwhile, with little ads to succumb to, lower-income countries like Chad and Laos have the healthiest diets.