Before you embark on any weight loss program, the first thing is to determinine if you are overweight.
The standard medical way of doing this is by calculating the body mass index (BMI)

The formulas are stated above. In words, you simply take your weight in kg, divide it by your height in meters and divide it by your height in meter again.

The following are interpretation of the BMI

• Less than 18 : Underweight
• 18 to 23 : Normal healthy weight
• 23 to 25 : Overweight
• More than 25: Obese
• More than 30: Grossly Obese

If you have an ideal BMI and still plan to lose weight, I suggest you visit your doctor for advice first.