Sex
The human immunodeficiency virus (HIV) is a pathogen that, in the absence of treatment, results in acquired immunodeficiency syndrome (AIDS), a condition that undermines the body’s natural defense systems, rendering it vulnerable to disease.
Pregnancy
Often accompanied by severe bleeding and pain, miscarriage is the most common form of pregnancy loss. It occurs before the 20th week and affects 10–20% of all pregnancies. The real number is even higher as many miscarriages occur so early that a woman hasn’t yet realized she’s pregnant. Depending on the case, medical or surgical treatment is sometimes necessary. Most often, a miscarriage will not influence future pregnancies.
Pregnancy
The creation of a brand new human involves many complicated processes. The main ‘building blocks’ are human reproductive cells, known as gametes. Female gametes are egg cells, and male gametes are sperm.
