Yes, there are insurers that offer life insurance for people over age 75 with health problems.
These are called "guaranteed issue" life insurance plans and guarantee acceptance for anyone who meets the age requirements.
Some guaranteed issue plans insure people age 50 to 80. However, there are limited death benefits the first 2 years you are insured, and the rates are high compared to life insurance for people who are healthy.
However, if you have no other options or have been turned down by other insurers, you may want to purchase a guaranteed approval life insurance plans.
Vantis Life offers up to $20,000 of guaranteed acceptance permanent life insurance with no health exams and no health questions asked.