- Age - Women over 35 have a higher risk of having fertility issues, due to a lower number of eggs and an increased likelihood of eggs with an abnormal number of chromosomes.
- Smoking can damage the cervix and fallopian tubes, increase the risk of miscarriage and ectopic pregnancy, age the ovaries and deplete eggs prematurely.
- Weight - Obesity or being significantly underweight may affect normal ovulation.
- Sexually transmitted diseases, such as chlamydia and gonorrhea, can damage the fallopian tubes.
- Alcohol - Excess intake increases the risk of infertility.
- Autoimmune disorders e.g. lupus, rheumatoid arthritis and thyroid gland conditions.
- Previous ectopic (tubal) pregnancy.
- Chronic stress (both mental and physical)
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