A substantial part of the individual differences between the twins were due to new genetic effects between this period of age 14 and 18. There are new genes being switched on that are involved in blood pressure and factors underlying blood pressure. I think that is the most interesting finding: the large amount of new genes that come into play.

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We need to know what the genes are to develop new medications and treatments and this shows that at different ages there appear to be different genes.

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