I am 23 year old male. My metabolism is too fast and I feel hungry within a couple of hours after I eat a meal. I even have problem gaining weight. I am 5'10" but weigh only 55 kg. I generally don't chew food when eating. I have the habit of chewing twice and swallowing. Would this be the reason for my indigestion? I have loose motion several days in a week. It's not even new anymore. Please help me with suggestions.