Are nutritional supplements and diet really that important for dealing with hemroids?

Generally speaking, yes they are.

Every person's body chemistry is different and results vary. Some notice dramatic results within just a few days.  Others notice gradual improvement over a period of time.

If you have problems with getting enough dietary fiber, you may want to use stool softeners to help with elimination processes. However, these should be used only for short time periods.

There are natural methods of accomplishing the same results. Try taking two tablespoons full of flax seeds daily, for example. Simple, easy solution, and you get omega oils 3 and 6 !