As someone with an insatiable sweet tooth, I was fascinated when I found out that hormones in our body affect how we perceive and crave sweetness. They do this according to our body's nutritional needs. Since I have a pretty bad sweet tooth, does this mean my body needs more of it? Not exactly. A recent article in The Economist explains that scientists have done the first step; they've isolated hormones that affect our palate's sensitivity to sugar.
The reason why this study is so important is because it may lead doctors and nutritionists to find a solution for ways of reducing the desire for sugar-heavy foods, and thus reduce calorie-intake. Yuzo Ninomiya, a neuroscientist at Kyushu University in Japan, researched the effects of leptin, a hormone that regulates appetite and metabolism. His results show that when leptin levels are low, we are more sensitive to sugar, which means something tastes sweeter than when our leptin levels are low. The level of the hormone increases over the day. This might explain why we tend to eat lots of sugar in the morning ('cause it tastes so good!).
So, it seems, if scientists can figure out how to raise leptin levels (or at least keep them steady) throughout the day, then all of us sweet-tooth types might have a chance at eating less cake!
In a world full of sweets, it's not easy to avoid them. What are some ways you control your sugar intake?
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