It has been postulated that drugs can exert epigenetic effects.
Agents used to increase histone acetylation (i.e., reverse the age-related epigenetic effects) improves performance in the older rats.
In general epigenetic effects alter the accessibility of DNA to proteins and so modulate transcription.
Epigenetics of autism - the study of epigenetic effects in ASD.
To date, these loci cannot be definitely associated with autism, though their connection with Mecp2 via regulation suggests the epigenetic effects should be re-evaluated.
But these epigenetic effects could turn out to be much more important.
And the modern American diet, so full of fats and sugars, could be exerting epigenetic effects on future generations, positive or negative.
"Obesity of mothers predisposes their offsprings to obesity by epigenetic, prenatal effects."
Inherited epigenetic effects on phenotypes have been documented in bacteria, protists, fungi, plants, and animals.
The epigenetic effect is least when young and increases with age, as the identical twins grow older.