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Gene therapy is an increasingly popular concept that has become a major focus in the field of medical research. It is a promising new therapy that has the potential to alter the course of diseases, such as cancer, and can help to restore health in people suffering from hereditary conditions. Gene therapy works by introducing a modified or healthy gene into a person whose own genes are either faulty or missing. The goal of gene therapy is to replace the genes, or the mutations, they contain with a healthy version of the same gene, and in doing so, restore optimum health.

To get started, scientists isolate the gene or genes that are responsible for the disease or condition they’re attempting to treat. After this, they develop a vector, which is a carrier for the gene, such as a virus. This virus is specially modified so that it won’t cause harm. It can then deliver the healthy gene, or the modified version of the gene, to the person’s genome (the body’s genetic code that determines how the body functions). Once the gene is in the body's genetic code, it can begin to do its work.

In some cases, the gene can be used to create proteins, enzymes, hormones, or other substances. For example, if an inherited condition causes a missing gene, it can be replaced with a version of the same gene. In other cases, the gene may be used to turn off mutated copies of a gene. This can help to stop the disease from progressing further.

Overall, gene therapy is a promising field of medical research that could dramatically improve the lives of millions of people. By introducing healthy genes into cells that are affected by genetic disorders, these diseases can be cured or the symptoms can be reduced. This could have immense implications for the future of medical treatments, as it opens up the possibility of curing otherwise untreatable conditions. As gene therapy continues to advance, it’s likely that many more diseases will find themselves vulnerable to the power of gene-altering technology.