What is the current evidence on polyunsaturated fat and cancer?
The polyunsaturate story is still very cloudy as far as cancer is concerned. At this point, we would advise people to watch their total fat intake rather than worry about the type of fat they’re consuming. Why does being overweight increase the risk of cancer? There are two phenomena going on. When people consume excess calories, it stimulates the metabolic overdrive into making cells divide faster. This increases the risk that something can go awry, resulting in cancerous cells. Then too, fat people have more cells, so there is an increased statistical chance that some of those cells might become cancerous. What role do antioxidants play in preventing cancer? Vitamins A, C and E are known to have certain antioxidant properties. It’s believed that these antioxidants work by stopping damage to the DNA; or if the DNA is already damaged, they help in its repair. But there are also other properties in vitamins that work to prevent cancer. For example, vitamin A retinoids seem to be able to
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