The blinding variety of diets is a testament to the fact that we don't really understand obesity as a disease. This would be the beginning of a cure. A more radical method might be simply to restore the normal gene, that is, by replacing the variant gene. This might represent a true cure. This is the goal of gene therapy.
Gene therapy is the use of genes to treat disease.
Because genes consist of the chemical DNA, gene therapy is sometimes called DNA therapy. Every activity carried out in a living body begins by reading the code in a gene. From this code, the body makes a chemical called a protein, and the protein carries out some action in the body. But a different variant of the gene may not work properly. Restoring the protein is an accepted form of treatment.