Swedish scientists have studied the effect of tea and coffee consumption on epigenetic changes in Europeans. According to the results of the study with the participation of more than 3,000 people, scientists found no association between coffee consumption and the occurrence of epigenetic changes. Also, there was no association found between such changes and tea and coffee consumption in men. But the consumption of tea by women has been linked to DNA methylation in the regions which contain genes known to interact with estradiol metabolism and cancer.
This means that the effects resulting from tea consumption in women, in theory, can manifest themselves in old age and be inheritable.