Yes, you can purchase life insurance coverage on your parents.

You can buy a life insurance policy on anyone with whom you share an economic insurable interest, including your parents or spouse.

The parent or parents you wish to insure will  need to sign as the policy "Insured" on the application for life insurance coverage, and have to be mentally competent to do so.

In addition, your parents may need to answer some health questions, or take a medical exam to find out if they...