What causes acne?
Worldwide there are about 60 million people who are suffering from acne. Most people develop acne during adolescence. It is most prevalent in those aged 16 to 18 years. The exact cause of acne is unknown, but doctors believe it results from several related factors. One important factor is an increase in hormones called androgens (male sex hormones). These increase in both boys and girls during puberty and cause the sebaceous glands to enlarge and make more sebum. Hormonal changes related to pregnancy or starting or stopping birth control pills can also cause acne.