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Smoking weakens a gene that protects arteries: study

WASHINGTON: People who smoke cigarettes may boost their risk of clogged heart arteries by weakening a gene that is otherwise protective of these important blood vessels, US researchers said Monday. The findings point to a genetic explanation for how smoking can lead to the plaque buildup that stiffens arteries and causes heart disease, said the report in the journal Circulation. "This has been one of the first big steps towards solving the complex puzzle of gene-environment interactions that lead to coronary heart…

Gene holds key to (no) grey hair: study

PARIS: Dyeing one's hair may no longer be the only option for keeping grey at bay, scientists said Tuesday in announcing the discovery of a gene that makes hair lose its luster.