Constipation occurs when you have difficulty moving your bowels, and passing stool may be difficult to pass or infrequent. Regularity depends on your diet, age, and how much you exercise. People are considered regular if they have three bowel movements a day or three per week. If you have less than three bowel movements a week, you are constipated. It’s considered severe constipation when you have less than one per week.Other signs of constipation include having lumpy or hard stools, straining to have move your bowels, feeling as though there's a blockage in your rectum that prevents bowel movements, feeling as though you can't completely empty the stool, or needing help emptying your rectum. You may have chronic constipation if you've experienced two or more of these symptoms for longer than three months.There are several causes of constipation: not eating enough fiber or drinking enough water, not exercising enough, and not going when you have the urge to.  Some reasons are easy to avoid such as watching what you eat. Certain foods can stop you up and slow digestion, making things uncomfortable.If you have problems with constipation and are trying to stay regular, limit or stay away from the following foods.