I have hemmoroids which appears every couple of weeks in a month and disappear after weeks. but they are painful, do i have to get operated to get rid off them permanently?

If you are bothered by that then have them taken care of. If not avoid constipation, hard stools and straining.

It is likely that the time that you have it is because of your diet that you need to pay more attention to. Hemorrhoids are engorged blood vessels around the anus and they do have a role in draining blood from the area and are engorged because of obstruction to a normal flow. Dr Tandan already told you how that could happen, however you could increase water, food fiber and healthy oil in your diet