Awaiting a verdict
The jury still wavers about the benefits of soy, as do I. However, I keep up with the research, especially any studies in which there is no vested interest in the outcome. When it comes to health information, there is no shortage of conflicting theories. And cholesterol is one of those topics that leave my patients feeling confused about what, exactly, to do.
Recently a study came out that studied the studies on soy protein supplementation and lipid levels. (Yes, you read that right.) This type of study is known as a meta-analysis, and it pulls together results from many studies and attempts to make some sort of conclusive finding. They culled together the results from 27 randomized controlled trials, in which neither the participants of the study nor the researchers were aware of who had received the test substance and who the placebo until after the results were in and then interpreted. This is what gives it that unbiased flavor.
When looking at the results of those trials, they determined that soy protein could not only lower the "bad" LDL cholesterol and raise the "good" HDL cholesterol, but also lower high triglycerides.
The research group goes on to recommend that people replace bad fats - such as saturated and trans-saturated - with soy protein. Anything has to be better than bad fats, right?
In moderation. I don't advocate eating a large amount of soy. If you are looking for ways to improve your cholesterol and want to try something different, than by all means have it a few times a week. Just stick with the fermented forms, which are easier to digest, such as miso and tempeh.
