MTHFR and epilepsy: After dividing the studies involved in the present paper according to age, greater odds for the correlation between MTHFR 677C>T polymorphism and epilepsy among young adults were demonstrated within all the analyzed genetic models, especially for the recessive model (OR = 1.48; 95% CI 1.15–1.92; p = 0.003) and additive model (OR = 1.63; 95% CI 1.24–2.13; p < 0.001).