'Diminution of Life Expectancy' calculations in injury and wrongful death cases

Who is qualified to make 'diminution of life expectancy' calculations in injury and wrongful death cases?  Should it be a MD or an actuary?

In most cases the training and experiences of a life actuaries are better suited for making 'diminution of life expectancy calculations.  In underwriting; underwriters (andtherefore actuaries) have as a part of their job to rate life insurance applicants to see whether because of health issues or risky behavior their insurance premium should be rated.  From the underwriters' point of view, MDs are the technicians who tell them the facts about a given client, the underwriter is the expert who translates those facts into the impact on the average person's life expectancy.

There are no doubt some MDs who have the required expertise, but given the day to day experiences of most MDs you are not likely to find to many MDs who can claim that they are experts on making diminution of life expectancy calculations.