- Learning about the cause of something has a positive impact on preventing that something
- Learning about the cause of a disease has a positive impact on finding a cure for the disease
- So, learning about the cause of a disease has a positive impact on preventing / finding a cure for that disease

- Learning about the cause of a disease has a positive impact on preventing / finding a cure for that disease
- Research is used for learning
- Therefore, research on a disease has a positive impact on preventing / finding a cure for the disease

- Research on a disease has a positive impact on preventing / finding a cure for the disease
- If something has a positive impact on a process then that something helps that process
- So, research on a disease helps prevent / find a cure for that disease

- Society is made of humans
- Disease has a negative impact on an organism
- Therefore, disease has a negative impact on society

- Disease has a negative impact on society
- Decreasing something negative has a positive impact on a thing
- So, decreasing disease has a positive impact on society

- Preventing something decreases the amount of that something
- Curing something can mean decreasing the amount of that something
- Therefore, preventing / curing something can decrease the amount of that something

- Decreasing disease has a positive impact on society
- Preventing / curing something can decrease the amount of that something
- Therefore, preventing / curing disease has a positive impact on society

- Research on a disease helps prevent / find a cure for that disease
- Preventing / curing disease has a positive impact on society
- So, research on a disease has a positive impact on society by helping to prevent / cure that disease

Hence, research on a disease has a positive impact on society by helping to prevent / cure that disease
In what way does society benefit from research on diseases?
- Society is made of humans 
- Preventing something decreases the amount of that something 
- Learning about the cause of something has a positive impact on preventing that something 
- Curing something can mean decreasing the amount of that something 
- If something has a positive impact on a process then that something helps that process 
- Decreasing something negative has a positive impact on a thing 
- Learning about the cause of a disease has a positive impact on finding a cure for the disease 
- Research is used for learning 
- Disease has a negative impact on an organism