Hyomyung Shin of South Korea is 28 but looks 12. Mentally he is a perfectly healthy adult.
He's fortunate, two of the 5 sufferers, also South Korean, have severe mental retardation and need 24-hour care.
Studies of South Korean genetics could teach a lot about the aging of the body and provide the key to immortality.
The opposite of Highland Syndrome is Progeria, a rare disease characterized by premature and accelerated aging. There are between 50 and 100 sufferers worldwide.
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