Simple modifications in food habits, including adopting a diet rich in cereals, fish and green leafy vegetables, can drastically reduce chances of prostate cancer, considered to be one of the most common cancers among men. The sixth leading cause of cancer deaths among males, prostate cancer is linked to family history of the disease and age. Doctors said research also indicates that a diet rich in red meat and high-fat dairy products predisposes men to the risk of this cancer. "High fatty diet and red meat are the main causes of prostate cancer," P K Julka, Head of the Department Oncology All India Institute of Medical Sciences (AIIMS), told IANS. As September has been dedicated to create awareness on prostate cancer, experts said early symptoms vary from man to man. One should look for frequent, difficult or painful urination, not being able to urinate, blood in the urine, painful ejaculation or frequent pain or stiffness in the lower back, hips or upper thighs. Doctors said, if one notices one or more of these symptoms for more than two weeks, the best was to see a doctor. Julka said men with higher consumption of fatty products have been found to be more prone to getting prostate cancer. He suggests low-fat diet that restricts red meat, oils and dairy products such as milk and cheese. Studies of men who drink green tea or take green tea extract as a supplement have also found reduced risk of prostate cancer that occurs in the male reproductive system. Roughly the size of a walnut, it is through the prostate that the urethra - the tube carrying urine and semen out of the body - goes through. Besides producing a fluid that forms part of the semen and protects the sperm, the prostate gland also plays a role in urine control.