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How can alcohol use and drug use affect reproductive capacity?

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Diagram showing the female reproductive system with labeled ovaries, fallopian tubes, uterus, and vagina, alongside hormone pathways and the process from ovulation to fertilization and early embryo development. — infertility Major structures and hormones involved in the initiation of pregnancy. Also seen, at right, is the development of an egg cell (ovum) from follicle to embryo.

Both alcohol consumption and drug use are recognized as factors that can have deleterious effects on reproductive capacity in both men and women. These substances can interfere with the complex biological processes required for successful conception and pregnancy.1

The human reproductive system is vulnerable to various chemicals, which can impact sensitive areas such as the hypothalamus, the pituitary gland, and the gonads—the ovaries and testes. While the body possesses physiological defenses like the blood-testis barrier, many fat-soluble substances can bypass these protections. Furthermore, drugs taken by males may damage the genetic material of spermatozoa, while exposure during pregnancy can lead to teratogenic effects, potentially causing developmental abnormalities in a fetus.2

Given these risks, it is ethically imperative to prioritize reproductive health by avoiding substances that may impair fertility or harm fetal development.12