The father's lifestyle affects the cognitive skills of his offspring—at least in mice. Scientists have now shown that if male rodents are fed a diet rich in folic acid, methionine and vitamin B12, their progeny do not perform well in memory tests. This suggests that the intake of high concentrations of such methyl donors could also have side effects in humans, for example, if they consume excessive amounts of energy drinks or folic acid pills. ScienceDaily
[See the study: A paternal methyl donor-rich diet altered cognitive and neural functions in offspring mice]