Updated On: 06 November, 2012 10:46 AM IST | | ANI
People who are sexually unfaithful without their partner's knowledge have a greater risk for sexually transmitted infections (STIs) than those who had other sexual relationships with their partner's consent, as they are less likely to practice safe sex, say researchers
They were also more likely to be under the influence of drugs and alcohol at the time of the encounter.

In a new study, researchers from the University of Michigan, USA, found that condom use for vaginal and anal sex was 27 percent and 35 percent lower in sexually unfaithful relationships and drug and alcohol use was 64 percent higher.