Genetics
Most people claim that there is no point in thinking to lose weight because it just runs in our family or it is in my genes. While a few rare genetic situations might lead to obesity like Prader-Willi syndrome, there is not because why most people cannot lose weight. It might be obvious that some genetic traits are inherited from your parents like having an increasing appetite might make you lose weight harder but it surely does not make it impossible. In most cases, obesity is more than just with environmental factors like poor habits of eating during the childhood.