The difference in diet explained 0.5 percent of the variation in total brain volume, an effect that was half the size of that due to normal aging. (sciencedaily.com)
Those whose mothers smoked throughout pregnancy had smaller total brain volumes and reduced amounts of grey and white matter in the superior frontal cortex, an area involved in regulating mood. (newscientist.com)
They found that males on average have larger total brain volumes than women (by 8 - 13 %). (sciencedaily.com)