British men are being told to be alert to a condition that could "put them on the fast track to extinction". Symptoms of the "illness" that has been dubbed "mantropy" include a penchant for pedicures, fruit smoothies and small dogs. American Maxim, one of the biggest-selling men's magazines in the world, has defined mantropy as "a silent killer which strikes men in the prime of life". The magazine has been urging American men to be macho rather than manicured and to indulge their passion for cars rather than clothes. The campaign coincides with research that shows that men and women are being increasingly turned off by media images of well-groomed, feminine-looking men. More than three-quarters of men questioned as part of the Leo Burnett Man Study believed that images of men in advertising are out of touch with reality. Sixty per cent of the 2,000-strong sample said that their masculinity was defined by their status within the home and workplace, not by the way they looked. This research reinforces the findings of a poll published in April which found that 90 per cent of women preferred a man who was "low-maintenance and easy-going". The magazine's website says: "If you are male, you're at risk. Mantropy knows no social or economic boundaries, attacking men of all races and tax brackets without warning."