The gastrointestinal tract very quickly absorbs the high volume of fructose corn syrup we mentioned earlier, further adding to your hunger pangs.įrom 50-60 minutes, the period of slow digestion starts in earnest. Blood pressure rises, and you may well be tempted by a McFlurry or apple pie.Īccording to the infographic, at the 40 minute mark, the body will probably still be craving similar types of food: losing control of your blood sugar levels makes junk food (like a chocolate bar) seem even more appealing than it normally would. Then the sodium - some 970 milligrams of it - causes dehydration and starts making the kidneys and heart work faster. The high levels of fructose corn syrup and sodium inside the bun leave us craving more of the same (and in the long term, this can lead to obesity, diabetes, and heart disease). It's from the 20-30 minute point that the downhill slide starts. Feel-good chemicals, like the neurotransmitter dopamine, are released into the brain, and you may catch yourself thinking: "This is a tasty burger."
Our brains have been wired to prefer high-calorie foods (sorry, dieters) and the Big Mac provides these calories in abundance - an average Big Mac contains 540 calories, which cause our blood sugar level to shoot up.
For the first 10 minutes, everything goes brilliantly, at least on the surface.
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