Leptin Deficiency Can Be Genetic
Some people with obesity have genetic diseases that affect leptin’s function.4 The issue might be making leptin, processing it, or your brain receiving it.4 Some of the genetic diseases related to leptin function include:
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Congenital leptin deficiency;
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PCSK1 deficiency;
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POMC deficiency;
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Leptin receptor (LEPR) deficiency; and
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Melanocortin 4 receptor deficiency.4
The above are diseases that you are born with.4 With these diseases, signs of obesity will show up in babies or young children.4 However, these diseases are all very rare.2,4 For instance, congenital leptin deficiency only occurs in about 1 in 4.4 million people.4 For most people, the cause of leptin resistance and obesity is more complex.