A recent research claims that trying to lose weight alters your brain and hormones so you’re doomed to pile it on again. In short, how hard we may try; research increasingly suggests that diets actually encourage our bodies to make us fatter.
Hence, it’s not a surprise that there are so many people who constantly experience the agony of failed diets – Where a dieter loses 5 stones during the first 5 months of the diet; but in the following months ends up piling 9 stones. Leaving the person spectacularly heavier post-diet and more desperate than ever.
Latest Scientific evidence increasingly points to a problem that confronts increasing number of dieters.
The problem is: cutting out calories changes metabolism and brain, so the body hoards fat and the mind magnifies food cravings into an obsession.
Call it a cruel fact of the nature or evolution, a fact many dieters have often lived.
New research shows dieting raises levels of hormones, like ghrelin, that stimulate appetite — and lowers levels of hormones, like peptide YY, that suppress it. Meanwhile, brain scans reveal that weight loss makes it harder for us to exercise self-control and resist tempting food. Worse still, the more people diet, the stronger these effects can become, leaving some almost doomed to being overweight as a result of their attempts to become slim. The world will certainly not be a great place, if so many dejected dieters carry all those ‘rebound pounds’.
That’s why an increasing number of experts are now of the opinion that it would be better not to diet at all.
Science behind the Rebound Pounds:
A new study conducted in Britain, found that approximately 37 percent of the weight lost by dieters during dieting period; comes back once they stop dieting.
The researchers say that for this our basic human biology is the greatest enemy.
The landmark study reinforces a belief among biologists that the human body has been shaped by millennia of evolution to survive long periods of starvation. The millions of years of evolution has made the human frame contain around ten times more fat-storing cells in relation to its body weight than most animals (polar bears, which have to endure long stretches when prey is unavailable, are similarly fat-rich). This is to ensure the body’s survival during long periods of food scarcity and harsh climes.
The human calorie-hoarding frames have strong mechanisms to stop weight loss, but weak systems for preventing weight gain. If a person manages to lose ten per cent of his/her body weight, the body thinks there’s an emergency. So it switches itself in an emergency or scarcity mode — burns less fuel by slowing the metabolism.
The body quickly learns to function on fewer calories, resetting the metabolism. The problem arises when, the person then stops dieting and starts eating more again, those extra calories are stored as fat.
This effect kicks in after around eight weeks of dieting — and can last for years. Studies by Columbia University show this metabolic slowdown can mean that just to maintain a stable weight, people must eat around 400 fewer calories a day post-diet than they were eating before dieting.
The same study reasons that once a person drops weight, the Muscle fibres in the body may change to become more fuel-efficient — burning up to a quarter fewer calories during exercise than those of a person at the same weight naturally. Hence to ensure that you don’t get those rebound pounds; you should have to eat 400 calories less than what you ate before dieting.
Some research studies claim that, the need to eat lesser calories may sometimes go to even six years, post-dieting.