Obesity is a problem which is very hard to face. Losing weight and then ensuring that the weight that has been lost is not regained is quite a difficult experience. Studies of obesity have shown that obese people who lose weight tend to have a slower metabolism rate. They also tend to have an increase in their appetite which is caused by certain hormonal changes. This leads them to begin eating once again and they end up gaining back the weight they had lost with so much hard work.

Scientists from Australia recently conducted a study in which they aimed to see whether weight loss in obese people could be sustained over a longer time period. Their study consisted of healthy people who were above the average weight and would be considered obese. These individuals were made to go through a diet which would help them lose 10% of their weight after which their diet was altered again to ensure that the weight which was lost initially was actually maintained. A year after the study was conducted, these researchers found that the hormone levels and the rate of metabolism had not returned to what it had been originally suggesting that the diet had worked in not only helping the individuals lose weight but also in maintaining their new weight.

This study which was conducted by the Australians was published in the very well known journal, The New England Journal of Medicine. Even though the study is not considered to be perfect, it still helps researchers in understanding why exactly it is hard for obese people to lose weight and to maintain their new weights.

A researcher from Columbia who had been studying the same phenomenon too believed that the study conducted was impressive as the changes in the hormone levels did not seem to go away. A researcher from Hammersmith Hospital, situated in London believed that the study needed to be tested under conditions that were more severe. Never the less he did believe that the study showed that weight loss is very hard. His reason for believing so is primarily due to the hormones which work against the body and do not allow it to lose weight.

Another study which was carried out at Melbourne University by Joseph Proietto and his colleagues gathered people who weight around 209 pounds. All those who participated, their level of hormones were measured along with their hunger which was assessed after they had eaten a simple breakfast. The participants were then required to adhere to a diet for 10 weeks after which they were supposed to have lost 10% of their weight. However the participants in this study found that their change in hormone levels had caused their appetite to have increased leading them to be even hungrier than they had been before they had participated in the study. The participants were put on a diet to maintain the loss of weight however a measurement of their weight a year later suggested that they were gaining back the weight they had lost.

Losing weight depends very much on a person’s biology as an individual’s body is made to face these changes; it is likely to resist them.