Chlamydia is the most common STI worldwide, with an estimated 131 million new cases each year.

Abstinence, or not having sex, is the only 100% effective way to prevent pregnancy.

Condoms are the most common type of contraception used worldwide, with an estimated 1.4 billion condoms used each year.

The recommended age for a woman to have her first Pap smear is 21 years old.

The recommended frequency for a woman to have a Pap smear is every three years.

Genital itching is the most common symptom of a sexually transmitted infection (STI).

Breast cancer is the most common type of cancer in women, with an estimated 2.3 million new cases each year.

Prostate cancer is the most common type of cancer in men, with an estimated 1.4 million new cases each year.

Lung cancer is the most common cause of death from cancer, with an estimated 1.8 million deaths each year.

A healthy diet is the most effective way to prevent cancer, with an estimated 30-40% of cancers being preventable through diet.

Depression is the most common type of mental illness, with an estimated 300 million people affected worldwide.

Suicide is the most common cause of death from mental illness, with an estimated 800,000 suicides each year.

Social support is the most effective way to prevent mental illness, with an estimated 50% of mental illness being preventable through social support.

Mental illness is the most common type of disability, with an estimated 1 billion people affected worldwide.

A healthy diet is the most effective way to prevent disability, with an estimated 30-40% of disabilities being preventable through diet.