Ask a Doctor: Why Do Mosquitoes Prefer Some Over Others?

Dr. Ian Smith is here answering audience medical questions, on topics from mosquitoes to bruises.

Why Do Mosquitoes Seem to Bite Some, But Not Others?

Dr. Ian reveals that each person's unique odor could explain why mosquitoes prefer some people over others. He adds that mosquitoes like the scent of cholesterol and sweat.

Why Do Some People Seem to Bruise Easier Than Others?

Dr. Ian says that there are several reasons why one might bruise easily (blood clotting problems, taking blood thinners, aging skin, heredity), but suggests you should talk to your doctor if you are dealing with this.