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Endocrine Factors and Recurrent Miscarriages

Some researchers believe that imbalances in certain hormones, such as progesterone and prolactin, might theoretically cause some cases of recurrent miscarriages. The evidence is still early, however, and right now most theorized hormonal causes of recurrent miscarriages have not been conclusively proven and have no formal treatment recommendations.
Obesity and Miscarriage - The Link Between Body Weight and Pregnancy Loss
Research suggests that women who are overweight are more likely to suffer miscarriage and other pregnancy complications, but it's important to remember that being overweight is a complex issue without easy pat solutions. Learn what you need to know about obesity and miscarriage risk.
Hypothyroidism During Pregnancy - Can Hypothyroidism Cause Miscarriage?
Doctors do not yet have conclusive answers about the link between hypothyroidism and miscarriages, but some evidence suggests that hypothyroidism may increase the risk of second-trimester miscarriages.
Does Elevated Prolactin Play a Role in Recurrent Miscarriages?
High levels of prolactin, a condition called hyperprolactinemia, is known to cause infertility. A few studies have found elevated prolactin levels in women with recurrent miscarriages. Right now, however, treating high prolactin is not considered a proven cause of miscarriages although researchers are looking at the issue.
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