In a nutshell..........carbs cause insulin release, protein (amino's) cause glucagon release WHEN taken in normal amounts (<50 grams/meal)----otherwise, slin is released for higher quantities of protein intake at one sitting. Fat releases glucagon mildy.
Keep in mind that when any of the above food groups are mixed, things change!!
Fat+Carbo's = insulin release
Carb's + Protein = insulin release
fat + moderate protein intake = glucagon
Dieting and fasting causes glucagon release as well.
Exercise/Stress........glucagon levels go up as well.
Although insulin gets you fat, it is also VERY important. So if you are trying to get more glucagon released for fat-loss reasons (!?!?!) be sure to STILL take advantage of insulin spikes with PWO carbs.........you need this anabolic hormone to retain muscle as well.