Disease Xxy - SPORTS

People on MSN: Mom ‘Terrified’ After Results from Prenatal Testing Reveal Son Had XXY Chromosome: 'My Entire World Shattered' (Exclusive) Mom ‘Terrified’ After Results from Prenatal Testing Reveal Son Had XXY Chromosome: 'My Entire World Shattered' (Exclusive) Science Daily: One in 500 men carry extra sex chromosome, putting them at higher risk of several common diseases Around one in 500 men could be carrying an extra X or Y chromosome -- most of them unaware -- putting them at increased risk of diseases such as type 2 diabetes, atherosclerosis and thrombosis, say ... One in 500 men carry extra sex chromosome, putting them at higher risk of several common diseases