It doesn't really matter your age. Take your ideal weight ie 140 lbs. Times that by 100 =1,400. You should be consuming 1,400 calories per day to reach your ideal weight of 140. Or you can eat 1,500 and excersize to burn that extra 100 calories or eat 1,600 and burn 200 calories with excersize.
It takes 3500 calories to lose a pound
How many calories should you eat per day if you are 5'1 and weight 150 pounds and are trying to lose weight?
You would need to lose 3500 Calories to lose 1poundDecrease your daily calories by 30%.
you would die if you ate that many calories. to lose weigh find out how many calories you should be eating for your current weight and then find out how many calories you should be eating for your target weight. slowly inch your calories down to that target weight range. and really you should ask your doctor about weight loss. to see if you even need it.
current weight x 10 = calories to lose weight to maintain weight = 2000 to 2500 calories per day
For extereme weight, best to get personal medical advice.
350000 a week
1,500 calories a day