Many things can cause epigenetic and developmental epigenetic changes.
Environmental factors are one cause. These can include, but are not limited to1:
These environmental factors are only a few examples of things that can cause epigenetic changes. Many other environmental factors, known and unknown, can cause epigenetic changes.
Some epigenetic changes appear to happen on their own, without any clear cause.
Some epigenetic changes happen as a result of certain types of chemical reactions in the body. Even some genes contribute to epigenetic changes.1
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