Centuries ago, native Americans discovered that the berry has a diuretic action, and so began using it for urinary conditions. More recently it has become popular for its effects in Benign Prostatic Hyperplasia (BPH), and it is the fatty acids, called sterols, that have been found to be one of the key constituents. The prostate gland is located around the urethra, and an enlargement can result in some annoying symptoms, such as frequent urination, particularly at night, pain and burning on urination, and difficulty in starting and stopping urination. Many men find relief from some or all of these symptoms taking Saw Palmetto.