Health: Obesity

Debate between Lord McColl of Dulwich and Lord Addington

Monday 4th April 2011 Grand Committee

[Lord Addington]

My Lords, the noble Lord, Lord McColl, is consistent. I remember that we have crossed swords on this subject several times. The idea that exercise is a bad way of controlling weight is odd because fundamentally it misses the point. Exercise may make you gain weight. If you take exercise that uses muscle—for instance, my own sport of rugby union or rowing—you will get bigger. If you take these exercises your body will become more dense and solid; if you run, your body will become more solid and you will add extra muscle. The old adage is that if you go to the butchers and ask for a pound of fat and a pound of muscle you will discover which is the smaller unit—it is just there.

We can jump around here but the idea is that you are carrying too much fat. The body mass index is probably the worst measure of obesity and fitness because it throws up the anomaly of the sportsman emerging as the person who is going to die tomorrow. According to the body mass index, I did not make it to 30; neither did anyone else who played my sport at any level; and when Pinsent and Redgrave won their last combined gold medal they were heavily overweight and just missed being obese. These men are six foot five, so you can see how bad it is.

I am aware that I have an inferior medical knowledge but burning fat is probably the worst way to judge the way in which you use calories in exercise—I know I am sticking my neck out in saying this—because you burn up the calories when your body repairs the muscles, over a longer period of time, after exercise has put up your metabolism. This is fundamentally what your body does and different types of exercise will burn it at different rates.

It is also true that you have to take account of the number of calories going in and the number going out. If you live a sedentary life, it is absolutely obvious that you do not need extra calories. Exercise burns up calories, basically by rebuilding, reconditioning or changing muscle. You might burn off 15 calories by keeping fit in the gym but if, for example, you lift weights, you will burn off far more calories by rebuilding your muscles afterwards. However, if you are heavily overweight and eat far too much or eat the wrong thing sat in front of a TV screen, you are going to get heavier.

The fact is that, if we do not take exercise and we sit in front of a TV screen, the vast majority of us will eat or drink cups of tea laced with sugar. The same point applies to sugar in tea as it does to sugar in alcohol. If we spend a great deal of time being sedentary, most of us will consume calories at the same time. Many of us do not have the will-power to sit still for hours doing nothing without consuming calories. We live in a society where these no-need-to-cook, at-your-fingertips calories are easily available: you go to a supermarket and, after you have been good and bought the things that you have to cook, you buy lots of things that you do not have to cook. That is one of the barriers that we face.

How do we try to bring about a balance? The Government’s responsibility deal is a way forward, and I hope that we can get a bit more out of that than we have from some of the other schemes that we have had in the past. Primarily, we are not asking everyone to stop eating convenience foods, but we are trying to make those convenience foods potentially less lethal. However, how this will work, I do not know. Improvements have been made but are they happening quickly enough? There is no silver bullet. The previous Government tried hard to tackle the problem. They made people look at the problem but people still tend to be getting heavier, so which combination is right?

Total abstemiousness may be desirable but it is not something that we follow. Let us face it: we would not have to maintain sports grounds if we all did. Fast food is available to us and it has always been a part of our culture. History shows us that fish and chip shops and pie shops have always been there. All the things we like, such as salt and fat, are available and they give us a nice hit. We have to take that on board and try to educate people further. If people like these types of snacks, we have to try to make them less fatty.

Exercise plays a very important part for many people. If you are active and a reasonably keen amateur sportsman, then, apart from anything else, you are probably going to take slightly better care of yourself. Why would you not do so? Even if you only want to get from the third to the second team in your particular sport, then losing a couple of pounds and eating slightly better may have a part to play in that. When you are playing or running around training one, two or three nights a week, you are not sitting on your behind in front of a TV screen or in the pub. We must look at the issue in the round. The incentive to control your diet is increased by exercise. If you do not eat a great deal and are not carrying an extra few pounds of fairly soft tissue or fat, then, even if you just want to walk gently up a hill on a Sunday, it will be easier and more fun. Everyone enjoys the view more when they are not gasping for breath at the end of their walk and do not have incredible pain in their muscles. That is a fact.

I repeat: we have to look at things in the round. Physical activity and access to physical activity will help, if only as an incentive to eat better. Unless we make sure that that there are incentives to take part in social and physical activity and to think about the foods that we eat and the amount we eat, we are going to miss our targets. Let us make sure that, when we talk about diet, we talk about it in terms not just of consumption of calories but of the correct cycle of calories for activity.

I leave noble Lords with this. Everybody is gobsmacked by professional athletes—not by the amount they train but by the amount they eat. An Olympic gold medallist—I think it was Phelps in the last Olympics—said that he had to eat 4,000 calories a day. That is eight gold medals-worth of burgers. It means that people can actually eat a great deal and be very fit and healthy. I suggest that we need to look at this in the round and not get obsessed by any one activity.

[Lord McColl of Dulwich]

Before the noble Lord sits down, would he recognise that I did not actually run down exercise? I specifically said it was a good thing. Also, how does he explain the scientific fact that only one-fifth of the calories we eat are expended in exercise?

[Lord Addington]

My Lords, quite simply, if it is expended in exercise, it is not expended in the rebuilding of muscle. Rebuilding muscle is an important part of exercise—not the actual taking of exercise.