Stomach fat from what I understand is mostly from too much carbs. As well, when you have chronic stress due to inflammation, oxidation and/or hectic lifestyle it causes cortisol to be continually released, which turns your glycogen into blood sugar, and if it is not used in the form of exercise, it stores it as fat in your midsection. The body is designed for survival. This is the bodies survival mechanisms in full effect. If you want to first stop gaining fat then you have to tell it that you are not going to starve. Eat only real food, veggies, veggies, and veggies, nuts , seeds, eggs, protein, and good omega 3 sources like fish. Gluten is always a bad idea, but if you show a sensitivity to it it should be avoided altogether. Dairy is bad because of what they feed the cows. All pollution, food coloring, and chemicals they put in the food lead to the chronic inflammation loop. Antioxidants are critical, so look up some good sources and find ones you like.
Next get rid of fat by exercising hard on an empty stomach. It doesn't matter what you heard, this is truth. In the morning before you eat anything, workout. Walks in the evening to get rid of stress, but before you have anything that will cause your insulin to release (sugar, anxiety, food sensitivity) push yourself physically in 30-40 second bursts to exhaustion for 30 mins. This triggers Growth hormone to be released. Growth Hormone is your best friend. It not only keeps you young but reverses the clock, keeps you healthy and fit. It won't be released during an insulin spike. Gh can stay in your system for up to 2 hr, so ride the wave. If you have to eat after your workout, have nuts, seeds, protein (not a protein bar), eggs, or leafy greens, but as soon as you eat carbs, bye bye Gh. Eat your carbs midday but not before bed. Insulin can circulate in your blood for hours after a sugary snack or starchy meal. As well, have your last food of the day at 7 pm. I make a protein shake with 2 raw eggs blended in it (can't even taste them) before bed. This provides my body with some extra protein for repairing muscles, cholesterol for hormone generation and L-citrulline, that boosts Gh and helps with nitric oxide production (benefits circulation and performance for workouts). Gh is released in large amounts during deep sleep. Sleep better by keeping telecommunication devices (anything with a signal) in another room, and other electronics away from your person. Always dim the lights at night and sleep in a completely dark room. Melatonin is the hormone that makes you sleepy and is released by your pineal gland which is light sensitive. Get at least 7 hrs of sleep.
....see getting rid of stomach fat is all very easy.