Actually, the risk of wrinkles of 40 year old man is higher than same aged women.  When we get angry, our eye brows contract frequently, and may lead to the appearance of wrinkles on the forehead area.  Usually this happens because men refuse or unwilling to oppose the problem during earlier stages.  Cigarette contains many dangerous chemicals that can accelerate the aging process.  If you pay attention, forehead wrinkles are common Wrinkles of 40 Year Old Man.  Usually, middle-age is the time when health complications and diseases start appearing.  These health problems can influence your facial appearance as well as the formation of wrinkles.