A new study, which involved participants eating pizza well after feeling ‘full’ in order to test what immediate effects this had on the body, finds that our metabolism is surprisingly good at coping with over-indulgence.
Researchers with the Centre for Nutrition, Exercise and Metabolism at the University of Bath compared the effects of normal eating (i.e. ‘eat until you are comfortably full’) with maximal eating (i.e. ‘eat until you cannot manage another bite’).
They found that the young, healthy men (aged 22 – 37) who volunteered for the trial consumed almost twice as much pizza when pushing beyond their usual limits, doubling their calorie intake, yet, remarkably, managed to keep the amount of nutrients in the bloodstream within normal range.
If we want to get control of our weight and our health we clearly need to engage our brain before we start eating because the food’s taste impacts our appetite and desire for more. As I wrote in the introduction to this blog nearly 10 years ago. “everything you eat and drink becomes a part of you …”
Recent results obtained by Finnish researchers from Turku PET Centre have revealed that eating leads to widespread opioid release in the brain, likely signalling feelings of satiety and pleasure.
Eating a delicious pizza led to significant increase of pleasant feelings, whereas consumption of calorie-matched nutritional drink did not. However, both types of meals induced significant release of endogenous opioids in the brain.
Opioids are associated with pleasure and euphoria. The study revealed that a significant amount of endorphins is released in the entire brain after eating the pizza and, surprisingly, even more are released after the consumption of the tasteless nutritional drink. The magnitude of the opioid release was independent of the pleasure associated with eating. According to the researchers, it is likely that the endogenous opioid system regulates both feelings of pleasure and satiety.
– The opioid system regulates eating and appetite, and we have previously found that its dysfunctions are a hallmark of morbid obesity. The present results suggest that overeating may continuously overstimulate the opioid system, thus directly contributing to development of obesity. These findings open new opportunities for treating overeating and the development of obesity, says Professor Lauri Nummenmaa from Turku PET Centre.
– It was a surprise that endorphins are released in the entire brain and that the nutritional drink had a larger impact. This creates a basis for future research and hopefully we will find ways to study and describe the development and predictors of addiction, obesity and eating disorders, says Researcher, M.D., PhD. Jetro Tuulari.
The study was conducted using positron emission tomography (PET). The participants were injected with a radioactive compound binding to their brain’s opioid receptors. Radioactivity in the brain was measured three times with the PET camera: after a palatable meal (pizza), after a non-palatable meal (liquid meal) and after an overnight fast.
Pizza claims two spots by itself, according to RealAge.
“Cheese and pizza are the No. 1 and No. 2 sources of artery-clogging saturated fat in the American diet. One slice of extra-cheesy pizza can contain as much as two-thirds of your daily saturated fat limit. Nutrition expert Bonnie Taub-Dix, MA, RD, CDN, author of Read It Before You Eat It, offers these tips to lighten up your pizza: Top it with veggies instead of pepperoni and sausage. While you’re at it, say “no” to breadsticks and “yes” to a side salad, and you’re on the way to preventing heart disease,” RealAge reported.
I thought those were some very good suggestions when ordering from the pizzeria regarding topping it with veggies instead of pepperoni and/or sausage. By all means dodge the breadsticks. Suggestions like that can take several hundred calories off the total, not to mention cutting down on the bad fats.