The most accurate indication of whether you have gained or lost weight is how your clothes fit. If you have noticed that all your clothes are becoming tight and you have considered buying clothes in a larger size than usual, it is probably a sign that you need to re-evaluate what you have been eating and exercise a bit more often.
Calculate your BMI. If you absolutely must have some form of size measurement, I recommend using the Body Mass Index (BMI) instead of scale weight. Doctors, nutritionists and other health professionals use the BMI to gauge an adult’s weight-related health risk. The BMI is a ratio of height to weight and it is a fairly accurate standard for determining if someone is at a healthy weight or is overweight and at risk of weight-related problems such as high blood pressure, high cholesterol and diabetes.
A BMI between 18.5 and 24.9 is considered healthy. If your BMI is between 25 and 29.9, you are overweight and may be at risk of health problems. However, there are women with BMIs of 25 to 27 are perfectly healthy. Take into account other risk factors, including your age, level of physical activity, family history, and eating habits, before becoming alarmed. If your BMI is 30 or above, you are obese and have a substantially increased risk of developing weight-related disease.