In general how many calories does one need everyday? I am a 27 years old female and weigh 149 pounds.

The calorie content is based on gender and weight. In general, the average non-obese individual will require anywhere from 1600-2200 calories. The higher number is for the slightly heavier person. Most experts go with the 1800 calories per day. To lose weight, one should cut down to about 1500 calories a day.