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Earth

Childhood poverty leaves its mark on adult genetics

Genomes of adults raised in poor or rich households have distinctive patterns of epigenetic change 鈥� perhaps a response to early adversity

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Unzipped chromosomes pass on parental stress

Life

Uncertainty principle: How evolution hedges its bets

Person with arm in cast looking down on an expanse of rubble, smoke and twisted wires

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Born scared: How your parents’ trauma marks your genes

Environment

Genes marked by stress make grandchildren mentally ill

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Prospective fathers should watch what they eat

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Changes caused by smoking block tumour-fighting genes

Environment

Chemical patterns on DNA mark out obesity genes

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Gene switch rejuvenates failing mouse brains

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Trauma leaves its mark on immune system genes

Post-traumatic stress disorder leaves chemical marks on DNA in genes that control immune functions and memory

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First twin sequences: What do they say about disease?

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Rats on junk food pass cancer down the generations

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Alcohol during pregnancy chemically alters fetal DNA

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Fat reprograms genes linked to diabetes