A gram of sugar yields 4 calories. So the 150 calorie limit for men (the limit for women is 100) would be 37.5 grams. A nice round number. If you want to talk teaspoons, a teaspoon (a level teaspoon that is) is 4 grams or 16 calories.
As a yardstick, I find myself asking how much sugar is in 32 ounces of soda. They say that a 32 ounce Mountain Dew has 116 grams of sugar. This is 464 calories, and somewhat over the recommended 150 calorie limit.
What about a can of coke? 39 grams -- which is 156 calories. Just over the 150 calorie limit for men, but we will give you those 6 calories. The ladies however will need to ponder their options.
I am not a habitual soda drinker. I might drink a half can (75 calories) per day in hot weather. My main sugar intake is in sweet evening snacks, i.e. ice cream. But I am starting to rethink ice cream due to saturated fat limits. I can still consume it, but not the unlimited amount I used to.
However, if you have issues with your weight, the sugar game is entirely different. Being overweight seems to alter your body chemistry in bad ways, and not only that overweight people tend to exercise less (which came first here, the horse or the buggy?). If you have weight issues, you likely need to address sugar consumption.
Tom's home page / tom@mmto.org