If you expand "vaccine" to "medical interventions", then yes. Bariatric surgeries are quite effective at cutting mortality.
>Long-term studies show the procedures result in significant long-term loss of weight, recovery from diabetes, improvement in cardiovascular risk factors, and a mortality reduction from 40% to 23%.
Having your stomach stapled is am extreme and expensive surgery requiring multiple doctors and support staff, lots of recovery time and years to fully take effect. It also carries a high risk of serious side effects.
>Long-term studies show the procedures result in significant long-term loss of weight, recovery from diabetes, improvement in cardiovascular risk factors, and a mortality reduction from 40% to 23%.