Unsafe sex
Drugs can blur your boundaries and allows you to do things that you would never dare to do in a sober state. Unprotected sex can be the result.
Alcohol and unsafe sex
Alcohol has an inhibiting effect, which can increase your sex drive.
In addition, alcohol lowers testosterone levels in men, making it more difficult to get an erection and ejaculate. In contrast, testosterone levels are increased in women which causes an orgasm to be experienced as more intense. However, high alcohol consumption can decrease a woman’s sex drive.