1.   Business travelers are especially likely to be watching their carbohydrate consumption, he said.

2.   Carbohydrates, too, have their limits, though the signals to stop carbohydrate consumption are somewhat slower to register than those for protein.

3.   Conversely, heavy carbohydrate consumption can lead to fluctuating blood sugar levels.

4.   Sooner or later, the dieter will have to go back to at least moderate carbohydrate consumption.