It's no surprise that candy isn't good for dental health. But as popularity of sour candies rises, so does the rate of tooth decay.

Most of these sour candies have extremely low pH levels -- as a comparison, battery acid has a pH level of 1 as do many of these candies. Some of the candies are so acidic they can cause permanent damage to tooth enamel -- particularly in young children whose protective enamel is immature. Gummy and sticky candies seem to cause the most damage because of the length of time kids suck on them before chewing and swallowing.

While it's best to avoid these treats altogether, if you're going to let your children indulge, make sure they don't suck or chew on them for a long time and have them rinse their mouths with water afterwards. A glass of milk can also help neutralize the acid from the candy. Don't have your ckids brush their teeth immediately after eating sour candy -- brushing the surface after an acid attack can actually increase the damage the acid causes.

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There are all kinds of foods that kids don't like or won't eat, and although most of those disappear as people get older, as adults we all still have a variety of different taste preferences. For example brussell sprouts are famously on the "yuck!" list due to tasting strong and bitter, but then there are some who really like them. So how is it that certain people taste bitterness when others don't? Is it all in our heads, or is there another explanation?

Researchers at the UT Southwestern Medical Center in Dallas are looking into it and finding variations in the genes responsible for bitter-taste receptors, which they believe account for different people liking different things.

So I always thought beer, another one of the examples of "bitter" flavors, was an acquired taste, but maybe there's more to it than that.

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