1,953 articles
Larry A. Green
Larry A. Green is an American family physician and health services researcher at the University of Colorado, known for research on the usual source of care.
Lasker Award
The Lasker Award, also called the Lasker Prize, is an annual American prize for biomedical research given by the Albert and Mary Lasker Foundation since 1946.
Latrine
Latrine: a pit-based facility for disposing of human excreta, including simple pit, VIP, and twin-pit latrines. Used by about 1.77 billion people; distinct from flush toilets and open defecation.
Lawrence S. Lewin
Lawrence S. Lewin (1938–2012) was an American health policy consultant who founded The Lewin Group, a Washington-based consulting firm, and was elected to the Institute of Medicine in 1984.
Lawrence W. Green
Lawrence W. Green is an American health education scholar and Professor Emeritus at UCSF, originator of the PRECEDE-PROCEED planning model and first Director of the federal Office of Health Promotion.
Leana Wen
Leana Wen, American emergency physician and public health professor at George Washington University; former Baltimore health commissioner (2015-2018) and Planned Parenthood president (2018-2019); CNN medical analyst and Washington Post columnist known for COVID-19 commentary.
LEFFTDS study
LEFFTDS (Longitudinal Evaluation of Familial Frontotemporal Dementia Subjects) was an NIH-funded North American natural history study following 300-plus members of families with MAPT, GRN, or C9orf72 mutations; it merged with ARTFL into ALLFTD in 2019.
Leiden University Medical Center
Leiden University Medical Center (LUMC, Leids Universitair Medisch Centrum) is a Dutch university medical center formed in 1996 from Academic Hospital Leiden and Leiden University's Faculty of Medicine, known for rare-disease care, ten research themes, and the Leiden Bio Science Park.
Leif I. Solberg
Leif I. Solberg is an American family physician and health services researcher at HealthPartners Institute in Minneapolis, elected to the National Academy of Medicine in 2017.
Length of Stay
Length of Stay (LOS) is the number of days a patient remains in a hospital between admission and discharge, widely used as a measure of hospital utilization and efficiency.
Lenox Hill Hospital
Lenox Hill Hospital, founded 1857 as the German Dispensary, renamed 1918, is a Northwell Health teaching hospital on Manhattan's Upper East Side at 100 East 77th Street, with a 5-star CMS rating and a $2 billion expansion approved in 2025.
Leon Kass
Leon Kass, born in 1935, is an American physician, biochemist, and bioethicist at the University of Chicago known for his 1997 essay against human cloning, "The Wisdom of Repugnance."
Leper colony
A leper colony, also called a leprosarium or lazarette, is a segregated settlement where people with leprosy, now called Hansen's disease, were confined, widespread from the later 1800s.
LESS CoV-2 study
LESS CoV-2 (RECOVAC LESS CoV-2 Study, NCT04841785) is a Dutch national prospective observational cohort study of long-term efficacy and safety of SARS-CoV-2 vaccination in CKD G4-G5, dialysis, and kidney transplant patients, enrolling 4,868 participants from 2021 to 2023.
LFRR study
LFRR study: Lupus Family Registry and Repository, formerly LMRR, an OMRF family-based lupus genetics registry and biobank started 1995, holding 2,618 SLE cases from 1,954 pedigrees by 2010.
Li Wenliang (李文亮)
Li Wenliang (李文亮, 1986–2020) was a Wuhan Central Hospital ophthalmologist who warned classmates on WeChat on 30 December 2019 about SARS-like cases, was reprimanded by police for rumors, died of COVID-19 on 7 February 2020, and was posthumously declared a martyr.
Libyan Centre for Dental Research
Libyan Centre for Dental Research (المركز الليبي لأبحاث طب الأسنان), a Libyan government dental research center established 2023 by ministerial decision 260, based in Zliten, under the Libyan Authority for Scientific Research, with eight specialty research departments.
Life expectancy
Life expectancy: average remaining years of life at a given age, computed from life tables. Period vs cohort measures; global level 73.3 years in 2023 after a 1.8-year COVID-19 drop; wide regional and socio-economic gaps.
Lillian Gelberg
Lillian Gelberg is an American family physician and health services researcher, professor of family medicine at UCLA, known for the Behavioral Model for Vulnerable Populations and elected to the National Academy of Medicine in 2003.
Limiting antigen-avidity enzyme immunoassay
The limiting antigen-avidity enzyme immunoassay (LAg-Avidity EIA) is a laboratory serological assay that measures HIV-1 antibody avidity to classify infections as recent or long-standing, estimating HIV incidence in population surveys.
Linda A. Randolph
Linda A. Randolph is an American public health pediatrician in Washington, DC, known for longitudinal research on prenatal cocaine exposure and for co-founding the city's first birth center in 2000.
Linda C. Degutis
Linda C. Degutis is an American injury prevention researcher, Yale School of Public Health lecturer, and National Academy of Medicine member who directed the CDC's injury center from 2010 to 2014.
LIRA trial
LIRA (NCT07799740), Laser Speckle Contrast Imaging for Rectal Anastomotic Evaluation, a University of Aarhus feasibility trial testing laparoscopic LSCI rectal perfusion measurement during rectal cancer surgery in 100 participants, compared with ICG fluorescence imaging.
Lisbeth B. Schorr
Lisbeth B. Schorr is an American social policy and public health figure, a Senior Fellow at the Center for the Study of Social Policy and a lecturer at Harvard.
List of burn centers in the United States
Burn centers in the United States: hospital units for serious burn injuries, first civilian unit 1947, 137 active centers by 1993, listed in the American Burn Association's Find a Burn Center directory with ABA/ACS verification.
List of countries by hospital beds
Hospital beds by country: inpatient beds per 1,000 people from OECD, World Bank/WHO, and Eurostat data. OECD average 4.2 (2023); Korea 12.6 and Japan 12.5 highest, Mexico 1.0 lowest; EU 507 per 100,000 in 2024.
List of deaths due to COVID-19
Deaths due to COVID-19, also called COVID-19 mortality or coronavirus deaths: fatalities attributed to SARS-CoV-2 infection, counted via death certificates (ICD-10 U07.1) and excess mortality, with notable early victims including Herman Cain, Manu Dibango, and Roy Horn.
List of deaths from drug overdose and intoxication
Deaths from drug overdose and intoxication, also called acute drug toxicity deaths; covers US CDC statistics (69,973 deaths in 2025), death certification practice, and notable cases such as Prince, Michael Jackson, Mac Miller, and Matthew Perry.
List of epidemics and pandemics
List of epidemics and pandemics: major outbreaks from the Antonine Plague, Justinianic Plague, and Black Death through cholera, Spanish flu, HIV/AIDS, Ebola, and COVID-19, with WHO definitions and estimated death tolls.
List of hospitals in India
Hospitals in India: about 70,000 hospitals and 1.9 million beds (2020), roughly 44,000 private and 26,000 public, organized under IPHS norms, with registries such as the Health Facility Registry and National Hospital Directory listing them.