Any analysis of a purported diet/cancer link should look at how these people lost weight in the first place.

For instance, if they were following the recommendations of low fat "experts" and consuming polyunsaturated fats and margarine as a supposedly healthy choice as part of their diet plan, then the many links between these products suppressing the immune system and their association with cancer formation are variables which can not be ignored in any truly scientific study. Without examining these factors and many other diet choices will always make such studies meaningless.

Malcolm