The biggest worldwide cause is the STD known as Chlamydia. It is easy to test and treat. It usually involves a urine sample test and antibiotics. The symptoms can be very mild and most people that have it are unaware that they are infected. If you have any concerns, go to your doctor or a clinic and get tested.
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Bleeding after sex is most often a sign of cervical infection in chlamydia. It's not necessarily a sign of infertilty.
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There are various causes of depletion. Some are known like CFC, some are unknown.
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Some causes to chlorate are not brushing your teeth everyday like you should and not using flouride in your toothpaste. Those are the causes of chlorate.
Some proven causes of mesothelioma cancer are smoking and drinking. You can read more at malignantperitonealmesothelioma.net/causes-of-mesothelioma
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Trade balance and decentralization are some of the causes of economic specialization.
Some of the leading causes of death are:diabetescancercar crashes