I. Use the words in the list to complete the passage: cure evidence exercise fast foods healthiest heart attacks illnesses increase obesity overeating sedentary weight In the last forty years, more and more people in Western countries like the U.S.A., Great Britain and Australia have become very overweight, a condition that doctors call . In the last twenty years obesity rates have also increased in developing countries, especially among young people who have been targeted by advertisements for Western like hamburgers, pizzas, deep-fried chicken and donuts. Obesity is a very serious health problem because obese people have a much higher chance of developing many serious than people of normal weight. These illnesses include heart disease, which can lead to fatal , Type 2 diabetes, which can cause blindness, kidney disease and the loss of arms and legs, and many types of cancer which are very difficult