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Rinse & rePeat
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“Even when a disease’s cause isn’t clearly understood, it is essential to use logical thinking in diagnosing its presence. The presence of a certain gene or “genetic marker” is often thought to have great diagnostic significance, which it rarely has. But even gross “signs” of a disease can be used diagnostically only if we know that similar signs aren’t present in perfectly healthy people. When pains are thought to be the result of a herniated intervertebral disk, x-ray pictures may be produced as confirmation of the diagnosis. But when people without pains are just as likely to have herniated disks (about 2/3 of normal people have them), the diagnosis fails to be convincing. When x-rays or MRIs show “plaques” in the head, multiple sclerosis is often “confirmed,” but when normal medical students show just as many brain plaques, the diagnosis must be questioned.“ -Ray Peat