:tongue: Last updated at 4:36 PM on 10th September 2010 The French claim to being the world's greatest lovers was blown apart today by a new study revealing three-quarters of Gallic couples have bad sex lives. The survey found a staggering 76 per cent of French people said that sexual problems were causing them relationship problems. It showed one in four men and women said they had used the excuses of headaches, stress, tiredness or the proximity of children to avoid having sex with their partners. French kiss? Non merci! Some 76 per cent of French men and women have sexual problems and used the excuses of headaches, stress, tiredness or the proximity of children to avoid having sex with their partner And research revealed half of French people felt that at times they simply had 'no desire' to have sex, according to the study by French pollsters Ifop. The survey contradicts a six month ago in which found 40 per cent of French men thought they were the best lovers, and the most intelligent and the funniest men in Europe. But Paris gynecologist Dr Sylvain Mimoun said of the latest survey: 'Clearly French people have sexual problems they are not being open about. 'Sexual issues can cause much greater problems within a couple. 'On the woman's side, she sometimes starts to feels undesirable. 'With men, they suffer impotence problems with make them feel less masculine and they can become hostile and aggressive. 'If the body then gets used to not having sex, a lot of the normal urges just disappear. 'It's like a hunger striker who after a few days stops feeling hungry, even though the body needs food.' Top gynecologist: 'If the body then gets used to not having sex, a lot of the normal urges just disappear - like a hunger striker who stops feeling hungry.' He added: 'It is quite normal to want sex less at some times than at other times, but if this goes on for prolonged periods it's best to seek expert help.' The poll coincided with a nationwide campaign organised by sexual health clinics, with a mobile advice centre stopping in seven French cities this month where people can consult experts about their bedroom issues.