i feel hungry all the time. even after i have eaten i still feel the nagging hunger pains. what is this. please help.

What are you eating? How much are you eating? Have you always felt this way? Do you ever feel full? A little more info would be appreciated.

Before you jump to diseases, remember 'If you hear hoof beats, don't assume zebras.' You may just not be eating what your body wants. No matter how many calories you take in, if you aren't giving your body the content it needs to function, you'll continue to feel hunger.