Obesity could destroy sexual urge, says an Australian researcher.
There are several biological and physical factors that can lead to a decrease in sexual functionality, says Associate Professor Frances Quirk from James Cook University's Department of Psychology
"I'm exploring the effects of being overweight or obese on sexual relationships, both the frequency of, and intensity of sexual activity," she said.
"Sexual dysfunction is very personal and even within a relationship lots of couples find it very difficult to talk about changes. One partner may say, 'I think something has changed and I don't know what it is' while the other is thinking 'they've gone off me' " she said.
"Excessive weight gain may lead one partner to find the other less physically attractive, a change in hormone production and lower energy levels and all these things can have a negative impact on your sex life."
Associate Professor Quirk said people are likely to be attracted to certain body shapes in the opposite sex.
"When men see women with a small waistline and broad hips the are just primed to respond to those shapes, while women are attracted to the triangular shape of a man," she said.
These body types are indicative of hormonal and physiological characteristics that are naturally attractive.
"With a round body shape all of those cues are hidden so what you're relying on in terms of your own sexual response to someone is subjective feelings," Associate Professor Quirk said.