How many calories should a 165 lb 33 yr old woman consume if she wants to lose weight?

Under 2000: For most people, the consumption of under 2000 calories per day with typical expenditure of calories will equal a loss of weight. The calories should be balanced nutrition. This is so long as you are healthy enough for dieting and that you have no underlying medical conditions.

1500 cal/d: This being said, it all depends on how tall you are and what you baseline health is. It's not only the intake that is important, but also how much you burn whatever you have already stored. That is why dieting alone with no exercise is not as efficient.