How long does someone with tuberculosis live without taking any medication?

Without proper medical treatment, the life expectancy of someone with active tuberculosis (TB) can vary greatly depending on several factors, including the individual's overall health, the specific strain of TB, and whether it's drug-resistant or not. Here are some general estimates:

1. Untreated Pulmonary Tuberculosis:

Primary pulmonary TB (the initial infection): If left untreated, primary TB may progress to active disease in about 5-10% of cases. The progression can occur within a few months or even years. The average life expectancy after the onset of active disease without treatment is estimated to be around 2 to 5 years.

Secondary pulmonary TB (reactivation of a latent infection): This is a more severe form of TB that occurs when a previously latent TB infection becomes active. The average life expectancy without treatment is reduced compared to primary TB and is estimated to be around 1 to 2 years.

2. Extrapulmonary Tuberculosis:

The prognosis for extrapulmonary TB varies depending on the affected organs or sites. For example, miliary TB (a severe form involving widespread dissemination) can be rapidly fatal if left untreated, with an average life expectancy of a few months.

It's important to note that these estimates are approximate and may vary widely among individuals. Timely diagnosis and appropriate treatment with anti-TB medications can significantly increase the chances of survival and prevent complications or death from tuberculosis.