A fatty diet could change your genetic make-up, priming the immune system and causing clogged arteries.

Epigenetic changes – which often involve adding methyl to particular DNA sequences in a process known as DNA Methylation – can alter gene expression in response to environmental stimuli. The field of epigenetics has excited biologists because it allows animals to adapt their genetics to fit the environment, while also passing some of that experience on to the next generation.

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