Is your body mass index a pointless measurement when trying to lose weight? Here, we dispel some myths about shedding pounds.
Body mass index is useless: BMI, which is a measure of whether you're a healthy weight for your height, does have its limitations.
For example, someone with a lot of muscle and low fat could have a high BMI, such as a professional rugby player who could have an 'obese' BMI result despite having very little body fat.
But it's still a good way for most people to check whether they are a healthy weight. In fact, it's claimed to correctly categorise people as overweight more than 80 per cent of the time.
All obese people are unhealthy: Where fat is on the body can, in actual fact, be more important than the amount of fat.
It's about personal responsibility and willpower: It's not that simple, however. Exercise can lead some people to gain weight, and bodies can resist weight loss by increasing appetite and hunger.
Starvation mode: Dieting doesn't slow metabolism, ending weight loss after a few months. It takes several years for metabolic slowing to fully offset a diet.
All diets are doomed to fail: When diet changes are part of a persistent lifestyle modification, most people lose weight and keep it off over the long haul.