Soy Doesn't Improve Mental Skills
Soy, a nutritional powerhouse, isn’t going to help you think any better, according to a new study.
It may, however, improve your visual memory a bit.
In the survey, experts analyzed the health of 350 women aged 45 to 92. All were postmenopausal. They were randomly assigned to take either 25 mg of soy protein per day, or a placebo in either powder or bar form.
Soy, recognized as a good low-fat substitute for protein, has also been used by women to avoid hot flashes. But the evidence of soy’s effect on thinking skills has been mixed. Some studies have found it to have a positive effect, while others reached just the opposite conclusion.
This study, funded by the federal National Center of Complementary and Alternative Health, reached a third conclusion: that there was no overall change in cognitive skills.