There are several plausible biological explanations for an association of habitual sugar intake and subsequent risk of depression, in the long - term. (nature.com)
Scientists have proposed both social and biological explanations for this difference. (child-encyclopedia.com)
A recent study has reported an association between dietary long chain polyunsaturated fatty acids and mental development in infants.32 It has been suggested that these fatty acids can be an explanation for the beneficial effect of nutrition with human milk on mental development of the child.33 34 This may be a plausible biological explanation of the correlation between breast feeding and mental development. (adc.bmj.com)