Optimizing Macronutrient Ratios: A Sample 1200 Calorie Diet Analysis

Question
I'm trying to work out what I should be eating.

If my diet should be 15% protein, 50% carbs, and 35% protein
(according to nutrition.org.uk and the BBC), I can make up a
nearly 1200 calorie diet like this:

15g protein = 120 cal
100g carbs = 400 cal
70g fat = 630 cal

(going by 4 cal/gram for protein/carbs and 9cal/gram for fat)

The results seem weird in two ways:
1) should I really be getting the majority of my food energy from
fat?
2) is 100g carbohydrate/day enough?

Answer
Dear Rachel, I think you need more protein, not carbohydrate. Most weight loss diets and fitness eating programs contain more protein to rebuild the muscles you breakdown with exercise. Try 43% carbs, 23% protein, and about 34% fat. Your body needs fat and protein on a daily basis, and can make it's own carbohydrate from the breakdown of fat and protein. Choose unsaturated healthy fats like those in salad oils and fruits like avocado. Laura Kraemer,Slimkids.com