Professor Donal O'Shea:

One in four of our kids is overweight or obese. However, despite the toxic environment driven by the food and drink industry and our sedentary lifestyles, 75% of people are of normal weight. It is amazing that the human body is still trying to maintain health. If we get it right, we will reduce the figure from 25% to an acceptable figure, whatever that may be. In respect of adult obesity, I have always thought it would be 10% or 12% as we will always have overweight and obese people, but the figures have gone up dramatically in the past 40 years.