Taste Buds and Your Weight

Can the Secret to Thinness Be On the Tip of Your Tongue?

Taste Buds and Your Weight

In a quest to find out why we favor brownies over berries or Brie over broccoli, we have been more or less tongue-tied. While the smell of a simmering stew can prime the appetite to signal the brain, "something smells yummy enough to eat," the sensors in the nose and back of the throat are not the whole story. It is only when smell joins up with taste perception that the full flavor experience is unleashed.

Researchers have been wondering if our sense of taste influences food choices that ultimately effect body weight. Some studies found that women "super-tasters" ate less overall, had lower BMIs and were 20 percent thinner than non-tasters. And people who have a history of recurrent ear infections, which damages your taste nerve, tend to be overweight.

Could the amount of the mushroom-shaped buds that pepper the surface of the tongue offer clues to why discerning diners and feeble foodies differ when it comes to weight?

The Power of Taste

How we taste is important because taste, not smell, gives you the nutritional information of foods. Carbohydrates and sugars are sweet; minerals are salty and bitter; and proteins, fats and vitamins have no taste (except for Vitamin C). Umami, however, a proposed, yet contentious new taste type, corresponds to a taste for glutamate, a chemical that is derived from the breakdown of proteins. Umami might explain why steaks aged for a long time are tastier than lesser-aged ones.

In general we tend to prefer sweet and salty to sour and bitter, a note that sends a signal to the brain that a food may contain acids or toxins.

The Bitter Truth

Taste sensitivity depends on the number of taste receptors on taste buds and the number of taste buds on the tongue. To measure this, scientists use a wafer that contains a drop of a chemical called 6-n-propylthiouracil, or PROP, which has a nasty bitter taste. Placing this on the human tongue can send a super-taster through the roof, while non-tasters just taste the paper.

Statistically, most people fall in the middle, while 25% are non-tasters and 25% super-tasters. You won't be able to get PROP without a prescription but you can do a non-scientific experiment at home using blue food coloring. Since taste buds won't stain you can see the bumps; 30 dots or more means you are a super-taster, less then 5, an under-taster.

A Taster's Choice
Non-tasters can't discern the taste of fat, which explains why they ate more higher-fat salad dressings in studies. Under-tasters prefer sweet-tasting foods and tend to eat more sugar and high-fat meats.

Super-tasters tend to avoid high-fat foods, sweets, and fruits and vegetables because their flavors are too intense. They tend not to like eating broccoli, grapefruit juice, coffee and dark chocolate because they are bitter. They err on the salty, which might lessen bitterness of foods. They are usually "wine people."

Sensitivity is Not Destiny
As much as we would like to blame it on the buds, many other factors influence what we prefer to eat. The sense of touch might play a role because a person's ability to perceive the creaminess of fats may influence palatability. Then there are individual differences in the ability to fight food urges, try new foods, learn eating behaviors (yes, you can learn to love a new food), and other genetic influences.

Tasty Tips
For Under-tasters
*    Use natural sugar substitutes
*    Use sugar-foolers like cinnamon
*    Change it up and try new foods
*    Watch out for added sugar

For Super-Tasters
*    Sneak vegetables and fruits into other main dishes
*    Use a salt substitute
*    Make it super hot with sauces and spices
*    Drink ice-cold vegetable juice and fruit smoothies
*    Add fiber wherever you can

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Presented by USANA.