Yes, solving previous years question papers for UPSC Medical Science Optional subject can be extremely beneficial for enhancing problem-solving abilities. Here's why:

1. Familiarity with Exam Pattern:
Solving previous years' question papers will help you become familiar with the pattern and structure of the UPSC Medical Science Optional exam. You will understand the types of questions asked, the distribution of marks, and the time required to answer each question.

2. Understanding of Important Topics:
By solving previous years' papers, you will be able to identify the recurring topics and themes that are frequently asked in the exam. This will help you prioritize your preparation and allocate more time to studying these important areas.

3. Time Management:
Solving previous years' papers will improve your time management skills. You will learn to allocate the appropriate amount of time to each question based on its weightage and difficulty level. This will help you complete the exam within the given time limit.

4. Practice Makes Perfect:
Regular practice of solving previous years' question papers will enhance your problem-solving abilities. You will become more efficient in understanding the questions, formulating the answers, and presenting them in a concise and organized manner.

5. Self-Assessment and Improvement:
By solving previous years' papers, you can assess your strengths and weaknesses. It will help you identify the areas where you need improvement and focus your preparation accordingly. You can also track your progress over time by comparing your answers with the model solutions provided.

6. Exam Simulation:
Solving previous years' question papers will simulate the actual exam environment. It will help you become familiar with the pressure and time constraints of the UPSC Medical Science Optional exam. This will reduce anxiety and boost your confidence on the day of the exam.

7. Revision and Retention:
Revisiting and solving previous years' papers will reinforce your understanding of important concepts and topics. It will help you retain the information for a longer duration. This will be especially useful during the revision phase of your preparation.

Conclusion:
Solving previous years' question papers for UPSC Medical Science Optional subject is an effective strategy to enhance problem-solving abilities. It provides familiarity with the exam pattern, improves time management skills, helps in self-assessment and improvement, and simulates the actual exam environment. Regular practice of solving these papers will boost your confidence and increase your chances of success in the UPSC exam.