The first study showing low-fat diets can prevent breast cancer recurrence now reveals -- thanks to longer follow-up -- that the benefit was almost exclusive to women whose tumor growth was not fueled by hormones.Trimming fat translated into a 66 percent lower risk of death for these women. One doctor with no role in the study says this is "as great or better than any treatment intervention that we've given" for this type of cancer, which is notoriously hard to treat.
As with all studies relating to diet, however, there is always the possibility that the benefit stems from something other than an altered diet -- like increased intake of other foods like fruits and vegetables, weight loss, or better overall health that accompanies the decrease in fat.
For women whose cancers are driven by hormones -- the majority of breast cancer patients fall into this category -- the diet change seemed to make little difference in the risk of recurrence or survival. This finding comes as a surprise to many health professionals who expected all women to benefit from a cut in fat consumption.
A new study to test weight loss, increased exercise, and low-fat diets in women with hormone receptor positive breast cancer will launch in the United States and Canada next year.











1. I saw this interesting and encouraging news in the newspaper on Sunday and have already passed it on to two patients I know.
However, it is not clear what types of fats were involved, and that can make a difference. In prostate cancer, it's not a low fat diet we strive for, it's a diet low in saturated fat, while consuming a reasonable amount of good fat such as from olive oil, certain nuts and fish.
It's great that a low-fat diet aided patients whose breast cancer did not depend on hormones, but is it possible that women whose cancers do depend on hormones might benefit from a diet low in saturated fat but not low in mono and poly unsaturated fats?
Jim Waldenfels (web site: http://www.mycancerplace.com/profile.php?id=147)
Posted at 10:26PM on Dec 18th 2006 by Jim Waldenfels