Some inherit a male Y chromosome with a higher risk
(NEWSER) - Men represent about two-thirds of heart disease sufferers, and a new study offers a possible hint as to why—men with a certain genetic ancestry were 50% more likely to be afflicted. The study analyzed 3,233 white UK men and examined their male Y chromosomes, which are passed down from dad. Up to 20% of the men belonged to "haplogroup I," one of 13 known ancient ancestry branches, and that group's risk was drastically higher, Scientific American reports. More»
