Science & Fun - Jonathan Graehl

Citing a brain-health study cited in this article, they claim, backed by IQ tests, that monounsaturated is better than either polyunsaturated and saturated in older women. Obviously it’s correlation only, and based on diet survey responses, not direct measurement.

women who reported the highest saturated fat intake also had, on average, the worst scores on reasoning and memory tests. Those with the highest monounsaturated fat intake had the best cognition test scores on average, compared with those who ate mostly polyunsaturated fats