Klinefelter syndrome

The three individuals with Klinefelter syndrome lived across very different time periods, but they shared some similarities -- all were slightly taller than average and showed signs of delayed development in puberty.

Now a chronic fear of running out compounds her worries, and a poor diet aggravates her son’s struggles with autism and Klinefelter syndrome, a genetic disorder that leads to violent outbursts.

Men with Klinefelter syndrome — who carry an extra X chromosome — are also at increased risk.

Instead of having one X chromosome and one Y chromosome, as men have, or two X chromosomes, as is typically female, the child had two X’s and a Y - a condition known as Klinefelter syndrome.

Men born with Klinefelter syndrome, a rare condition where men have an extra X chromosome, may be more susceptible to breast cancer, as well as men who inherit a mutated gene.