Do you feel like your sex drive just isn't what it used to be? You aren't alone — many people feel that way at some point in their lives. In some cases, a decrease in libido may be due to a medical issue. For many people, however, the situation may be remedied without resorting to medication. Check out the top 10 natural libido boosters, from Dr. Catherine Hood. You just may find one that puts the spark back into your love life.