How does fragile X syndrome affect the body?


Some people who have fragile X syndrome are never diagnosed because their symptoms are so mild as to go unnoticed. Others, however, experience severe intellectual difficulties, behavioral issues, and physical problems. In general, girls' symptoms are less severe than are boys'.
The genetic mutation that causes fragile X syndrome is a repetition of a section of the genetic code. People with more repeated code are more likely to experience severe problems from fragile X syndrome.

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