I wouldn't suggest drinking them all at once but I think that over the period of a day you would get the same benefit. I think what's important about the five fruit and vegetables a day is not necessarily only the fibre, but also all the nutrients that are in these foods. These nutrients help reduce your risk of heart disease and cancer. And that's what much more important than the fibre. Eating a high fibre breakfast cereal, doesn't reduce colon cancer. Studies have shown that. It's the nutrients in people's diets that are high in fibre that are more important.

Salt makes ice melt at a lower temperature. So in sea water ice will melt at maybe -5 or -6 degrees centigrade. But if you get cold enough, the water will still freeze. And so you can still get icebergs. It's just got to be a bit colder than if it was in a lake. When there's salt in water, the water can get a bit lost in the salt. It gets in the way of the water forming a crystal. It's more difficult for the water to form the crystal, so it has to be a bit colder for it to actually freeze.

Well certainly the mineral content isn't going to change. But it's likely that some vitamins will decrease over time. So there is an optimal time when you can eat these foods. It really depends on the storage environment. If it's a cold environment then it's going to slow the degradation of things like vitamin C and other minerals that are unstable.

The idea that you should have a low cholesterol diet to lower your cholesterol is completely flawed. In fact if you eat a low fat diet and have lots of refined carbohydrates, then your body likes to make cholesterol out of those excess carbohydrates. So a low fat diet isn't the secret to lowering cholesterol levels.

Well sherry's quite a rich source of alcohol. But I think it's got to be taken in the context of your overall sense of well being. Don't drink too much and make sure other aspects of your life are healthy. Unfortunately it doesn't contain the same specific healthy components that red wine does.

I haven't actually studied any literature on this but certainly peanut butter is a source of mono-unsaturated and polyunsaturated fat. So in the context of a balanced diet, it is likely to have some beneficial effect if you are at the same time cutting out saturated fat. So it's really about replacing say the amount of red meat you might be eating with things that are rich in vegetable fats. Another good example of this would be Soya beans. Soya beans are a good source of vegetable fats.

I'm not aware of any evidence that that's the case. The evidence for coffee and cancer is pretty good. It's neither protective nor harmful. The method by which you prepare coffee is quite important, so filtering coffee takes out some of the cholesterol elevating effects of coffee. So boiled coffee is not a good way to prepare it. Cholesterol raising oils are also not present in instant coffee.

That's a very interesting question indeed. There's a bit of a paradox. In healthy people, caffeine causes a bit of a tremor in your hands, it reduces hand steadiness. Whereas there's evidence that it can protect against Parkinson's disease.