Is There a Science to Food Likes and Dislikes?

Aug. 26, 2004 -- Don't like sushi or whipped cream or vodka cocktails? You're not alone.

Behavior experts estimate that nearly one-quarter of healthy American adults have a food aversion at any given time. Nearly one-third of the population will experience a food preference during the course of his or her life. [FOOD PREFERENCE -- THAT SOUNDS TOO BROAD]

People's food habits cover anything related to eating. They include finicky or picky eaters and those who will eat almost anything. Some refuse to let their foods touch each other, while others are "food-mixers," and chose to eat each meal with all foods mixed together. Some even eat their food in a particular order, or with an unusual utensil.

On Seinfeld, for instance, Jerry dumped a girlfriend for her food idiosyncrasy — she ate her peas individually with a fork.

Mental Food Fights

Researchers say one of the most common food avoidances is high-protein foods like red meat.

"Nobody really knows why," said Richard Mattes, a nutritional professor at Purdue University in West Lafayette, Ind.

He hypothesizes that some of the compounds found in high-protein foods loosen the muscles of the digestive system, potentially contributing to acid reflux disease, or heartburn. Once the food is associated with a problem like acid reflux disease, it is much more likely that the person will no longer want to try the food again.

Aversions like these are usually very specific. A bad experience with a piece of meatloaf would not preclude you from eating a hamburger or taco, despite each being made with the same beef ingredients.

For some, color and texture are more objectionable than the type or content of the food. They may find a problem with the foamy consistency of whipped foods like creams or frostings, but enjoy food similar in shape and color if they are heavier — like mashed potatoes or ice cream.