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How many people are affected by epigenetic or developmental epigenetic changes?

Epigenetic and developmental epigenetic changes happen in all humans as part of normal growth, development, and aging. Some of the changes can alter the risk of developing certain diseases.^1,2

Aguilera, O., Fernández, A. F., Muñoz, A., & Fraga, M. F. (2010). Epigenetics and environment: A complex relationship. Journal of Applied Physiology, 109, 243-251. Retrieved July 24, 2012, from http://jap.physiology.org/content/109/1/243.full.pdf (PDF - 582 KB) [top]
National Institute of Neurological Disorders and Stroke. (2008). NIH announces new initiative in epigenomics [press release]. Retrieved July 24, 2012, from http://www.ninds.nih.gov/news_and_events/news_articles/pressrelease_New_Initiative_Epigenomics.htm [top]