Molecular biology has transformed the way we diagnose diseases by enabling the detection of health problems more quickly and with greater precision. Thanks to techniques such as PCR and genetic sequencing, it is now possible to identify infections like HIV, hepatitis, or SARS-CoV-2 with remarkable accuracy, even before symptoms appear. In addition, these tests make it possible to monitor the progression of a disease and to select the most appropriate treatment for each patient.

In the case of hereditary diseases and certain types of cancer, molecular biology allows DNA analysis to detect mutations and make personalized decisions in both prevention and treatment. It has also been key in oncology, helping doctors better understand the behavior of tumors and design more effective therapies. All of this results in more reliable diagnoses, more precise treatments, and ultimately, a better quality of life for patients.