Thomas Perls MD, MPH

Professor of Medicine and Fellow, American College of Physcians

Board Certified Internal Medicine, Geriatrics

Expert Witness and Independent Medical Examination

Telephone: (617) 638-6688    Cell: (617) 733-7893

Email:  Lawsonline link

Recent case:
  • Accidental death in a man with longevity in his family. Greatly increased award due to the addition of 18 years to his life-table estimated life expectancy.
  • Plaintiff's attorney greatly exaggerated estimated life expectancy in claimed negligence case 

Estimating Life Expectancy in Middle and Older Age Adults

Reliable and valid estimation of the additional years a deceased individual would have reasonably been expected to live is critical for determining non-economic (e.g. loss of consortium, loss of life and loss of ability to enjoy life) and economic (e.g. lost earnings, medical and funeral costs) damages.


Similarly, such an estimation is crucial for individuals seeking economic and non-economic damages following a debilitating injury. For those requiring a life plan, an underestimation of remaining years of life can have disasterous consequences.


To determine such an estimate experts rely in part upon sex, race and tobacco-use specific birth cohort life tables. Data from thousands of insured lives allow us to further refine these estimates taking into account medical conditions such as coronary artery disease, obesity and diabetes.


However, it is also clear from epidemilogical studies that medical care can greatly ameliorate these conditions with interventions -for example, medication, coronary artery stents and good glucose control and such efforts must be taken into account. A physician's input can be important to assess the degree to which a pathological process can impact upon life expectancy.


Finally there are also good "risk" factors that add years to a person's estimated life expectancy including regular exercise and familial longevity. The inclusion of these additional years to an estimated life expectancy can dramatically and postitively impact a jury's or judge's award.

  • Life Expectancy taking into account medical and behavioral positive and negative risk factors
  • Testementary Capacity For Wills
  • Independent Clinical Examinations (Geriatrics, Cognitive Function, Level of Functional Independence)
  • Anti-Aging Quackery, Hormone Replacement Therapy, Steroid and Growth Hormone Use

Thomas Perls MD, MPH, FACP:

*Professor of Medicine at Boston University School of Medicine

*Board Certified Internal Medicine and Geriatric Medicine

*Attending Physician on the Geriatrics Teaching Service at Boston Medical Center

*Founder (1995) and Director of the New England Centenarian Study, the largest study of    centenarians and their families in the world

*Principal Investigator of the NIH-funded Long Life Family Study (in its eighth year)

*Author of over 100 articles, nearly all related to human longevity. Includes seminal articles on the relative risk of siblings of centenarians surving to age 100+ years and the markedly reduced mortality risk and risk for age-related diseases amongst the children of centenarians

*Trial and deposition experience regarding estimation of life expectancy as well as medical misuse of growth hormone and anabolic steroids for anti-aging and body building