A new study reveals that there is a very slim chance that obese people will get back to their normal healthy weight even if they try weight management programs.

Researchers of King’s College London found that less than one percent of obese people successfully return to their normal weight, BBC reports. The study also found that once obese people lose weight, they could barely keep it and most likely regain their lost pounds within five years or less.

The UK study monitored the weight of nearly 279,000 men and women in United Kingdom between 2004 and 2014. It concluded that only 1,283 men and 2,245 women got back to normal body weight.

The probability of people who have Body Mass Index of 30 to 35 to return to their normal weight is only one in 210 in men and one in 124 for women, the research revealed. The chance of shedding pounds goes even lower as weight increases. For men with BMI of 40 to 45, there was only one in 1,290 who returned normal weight and only one in 677 women.

The study added that maintaining the normal weight after shedding some pounds is even more difficult.

Data showed about 53 percent of patients regained lost weight within two years and 78 percent were back on their old weight within five years, Health Line noted.

Researchers said this shows that the current strategies for helping obese patients are failing, BBC wrote.

“The greatest opportunity for fighting the obesity epidemic might be in public health policies to prevent it in the first place at a population level,” lead researcher Dr Alison Fildes said.

Study co-author Martin Gulliford, professor of health and social care research at King’s College London, agreed and said diet and exercise alone are not enough to help obese patients.

“The greatest opportunity for stemming the current obesity epidemic is in wider-reaching public health policies to prevent obesity in the population,” Health Line quoted Gulliford as saying.

According to Health Line, obesity happens when a person reaches BMI of more than 30.