Is it normal to always feel super sleepy after eating? should there be a concern?

Well, ...: Feeling a little tired after eating a heavy meal is perfectly normal. However, if you feel like having a nap after most meals there could be some underlying health problem that needs addressing. Excessive secretion of insulin, which is the body's way of trying to balance blood sugar levels, causes tryptophan to move into the brain, where it is metabolised into serotonin and melatonin. These neurotransmitters have a calming effect and help regulate sleep.