eating right to prevent hemorrhoids

Hello. I'm 45 year old mother and I'm really worried for my son. You see, he is only 20 years old but already suffers from hemorrhoids.
It is all from his all day sitting in front of his computer.
I don’t know what to do about all this.
We have even took him to see some doctors and one of them told us that this could be even worse if he continues like this.
Not only that he should change some of his nasty habits but he should change his complete eating habits.
That’s why I'm interested to hear more about this “right eating” to prevent hemorrhoids!

Hi. I know everything there is to know about this hemorrhoid problem because I was suffering from it at least five long years.
There is nothing more unpleasant and nothing more unbearable and distracting as hemorrhoids- trust me!
Of course, with some changes in life habits and right dietary rules- all this could be prevented!
For hemorrhoid sufferers, diet rich in complex carbohydrates and dietary fiber, particularly insoluble fiber, is perfect and recommended. I really don’t know why is all this but I know that A diet rich in fibers helps because it promotes regular bowel movements which could be crucial. One more thing- vitamin C is also very important because vitamin C may help tone and shrink veins.