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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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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.