Is there any scientific evidence behind the assertion I see on diet websites and in books that restricting a food for a set period of time will allow your tastebuds to be more sensitive to it.
For example, from ehow.com:
Taste buds acclimate to our diet. They respond to what they are used to. Known as neuron-adaptation, less sensitivity to flavor results. As our taste receptors become saturated with high doses of sugar, salt and fat they become less effective. Most people respond by revving up their fat, salt and sugar intake. However, resetting your taste buds is a better response. Resetting cuts down cravings and restores flavor's original impact.
The most common is sugar, with the idea that foods will taste more sweet with less sugar at the restriction period. But I've seen it for salt and fat as well.