The book Mindless Eating is about the fact that we encounter a variety of subtle cues in our daily lives that prompt us to eat. For example, we have heard that food porn might encourage overeating, and the size of the plate you use determines your portion size - and larger portions make you eat more. Dieters often speak of "trigger foods," that they just can't seem to stop eating and must pass up altogether to stick with their healthy eating plans, but everyone has food or situation that gives them the same problem.

Once we become aware of these problems we can sometimes control them, though this is a very hard thing to do. It requires an almost constant awareness of what we're eating, which is why food journals can be effective at quashing bad habits. It is also helpful to take a serving at put the rest of the food away, out of sight.

Do you have a "trigger" or some sort? Have you ever almost not realized that you were eating something until it was gone, even if it was just a bowl of berries, and not a plate of nachos? How do you cope with it?

The more food that is put in front of you, the better the odds are that you will overeat or, at least, eat more than you might otherwise. Generally, this is common knowledge, but some researchers put it to the test by giving people both good and bad tasting foods. Specifically, while one group of participants got varying sizes of freshly popped popcorn, another group was given 2-week old stale popcorn (described as "perfectly safe, just a bit funky"). The results proved the theory, when fresh popcorn eaters ate 43% more popcorn when it was served in a large container and stale popcorn eaters ate 34% more.

If the taste of a food isn't enough to stop people from eating it, it's best to control the size of the container that it's in. So do yourself a favor and use smaller plates and bowls, especially for snacking. Or fill up a bowl with healthy fruits and veggies for munching.

Exact portion size can be difficult to determine without measuring (which is an option), but there's too much variation in all those guidelines that compare portion sizes to, for example, the size of a fist. When in doubt, just take a little less that you think you should. At the very least, you'll be eating one less bite at a time - and over time, even a small change like will add up.

A recent Newsday story looks at overeating from a neurological perspective, likening it to other forms of addiction. One study cited in the article found that drug abusers and overeaters had similarly low numbers of dopamine receptors, which are partly responsible for feelings of satisfaction and fullness. Other studies have found that some obese people's brain chemistry contributes to heightened feelings of pleasure from food. Experts cited in the article are hesitant to formally categorize overeating as an addiction, however. Still, many feel that examining it from that angle may help develop more effective treatment methods.

Previous studies about the tempting nature of foods have always assumed that the brain functions the same way in all people, but it turns out that some people are more affected by images of food than other people are. When someone's "reward center" was over-activated by temptations - say, a picture of a delicious chocolate cake - they were more likely to give in to those temptations. The study noted that such a reaction could make people more susceptible to forms of marketing and product advertisement, as well as even to other addictions, like drug use or alcoholism.

I know that I prefer to see images of tempting foods in cookbooks and on blogs, but I think it gives me a greater appreciation for the food, not necessarily tempting me to overeat. Indeed, something that is perfectly presented might make me less likely to tuck in, not wanting to disturb the art-like arrangement on my place.  Have you ever been driven to overeat by a picture? Does this mean that we need to add a disclaimer to our Food Porn category?