All articles starting with H
20,046 articles
Health club
Health club: a commercial fitness business offering exercise equipment, classes, pools, and saunas on membership or pay-per-visit terms. Also called gym or fitness center; US membership reached 81 million in 2025.
Health communication
Health communication: multidisciplinary field applying communication theory, evidence, and strategy to advance health and well-being; term first used by the ICA in 1975; spans provider-patient interaction, campaigns, health literacy, and social media.
Health Connect
Health Connect is an on-device Android health data platform, announced by Google in 2022, that lets health and fitness apps share data through a single set of APIs.
Health economics
Health economics, also known as medical economics, is a field of applied economics studying health care markets, whose standard supply-and-demand model breaks down through uncertainty and information asymmetry.
Health education
Health education, also known as health class, is planned learning that gives people the knowledge and skills to make quality health decisions, in schools, workplaces, and clinics.
Health Education & Behavior
Health Education & Behavior (HE&B) is a peer-reviewed bimonthly Sage journal, official publication of SOPHE, publishing health behavior research, program evaluations, and reviews; formerly Health Education Quarterly, ISSNs 1090-1981/1552-6127.
Health Education England
Health Education England (HEE) was the NHS arm's-length body for workforce education, training and planning in England from 2013 until its abolition, when its functions transferred to NHS England on 1 April 2023.
Health Education Nature Sustainability Party
SENS (Partidul Sănătate, Educație, Natură, Sustenabilitate) is a Romanian progressive green party founded in 2023, pro-EU and member of the European Greens family; it won about 3% and no seats in the 2024 parliamentary election and backs Nicușor Dan.
Health effects arising from the September 11 attacks
Health effects of the September 11 attacks: WTC dust (asbestos, silica, PAHs, pulverized concrete) caused respiratory disease, certified cancers, and PTSD among ~409,000 exposed people; WTC Health Program covers care through 2090.
Health effects from noise
Health effects from noise are the adverse physical and mental health outcomes caused by environmental and workplace noise, including sleep disturbance, cardiovascular disease, cognitive impairment in children, and hearing loss.
Health effects of bed bug bites
Bed bug bites are itchy, red skin reactions to bed bug feeding, appearing within days and resolving in about a week, with no evidence the insects transmit disease.
Health effects of climate change
The health effects of climate change include heat deaths, shifting infectious disease, degraded air, and food insecurity, with the WHO projecting 250,000 extra deaths yearly by the 2030s.
Health effects of salt
Health effects of salt: dietary sodium chloride raises blood pressure, increasing cardiovascular, gastric cancer, kidney, and other risks. Global intake 11 g/day salt vs WHO's <5 g; 1.7 million deaths yearly; DASH, TOHP, and SSaSS trial evidence.
Health effects of sunlight exposure
Health effects of sunlight exposure: UV radiation (UVA 315–400 nm, UVB 280–315 nm) causes sunburn, skin cancers, cataracts, and immunosuppression, while UVB enables vitamin D synthesis; UVA may lower blood pressure via nitric oxide.
Health effects of tea
The health effects of tea, also called the health benefits of tea, cover how drinking green, black, and other Camellia sinensis teas affects heart disease, cancer, weight, and cognition.
Health effects of tobacco
Health effects of tobacco: diseases and deaths from tobacco use and secondhand smoke. Over 7 million deaths yearly, 7,000+ smoke chemicals, cancer, heart disease, COPD; 1964 Surgeon General report; quitting lowers risk.
Health effects of vitamin D
The health effects of vitamin D beyond deficiency: large randomized trials find near-null results for fractures, cardiovascular events, cancer, and respiratory infections in healthy adults.
Health effects of wine
Health effects of wine: ethanol plus polyphenols such as resveratrol. Covers the French paradox, uncertain cardiovascular benefits, established cancer risks, beverage-type comparisons, and current drinking guidelines.
Health Equity
Health equity: fair opportunity for all to attain full health, pursued by eliminating health disparities in which disadvantaged groups systematically fare worse; defined by Braveman and Whitehead, monitored by WHO and US frameworks.
Health Expenditures
Health expenditures: amounts spent by individuals, organizations, and nations on health care, also called health spending. Measured via SHA 2011 and WHO GHED (190+ countries since 2000); OECD average near USD 6,000 per capita in 2024, US highest at over USD 14,880.
Health Facilities
Health facilities are institutions providing medical or health-related services, from hospitals and laboratories to pharmacies and residential care homes (MeSH D006268). Coverage includes classification, WHO hospital roles, SARA/HHFA readiness assessment, and documented readiness gaps in low- and middle-income countries.
Health geography
Health geography, also called medical geography, is a subdiscipline of human geography studying how place, location, and spatial relations shape disease, well-being, and health care.
Health Gorilla, Inc.
Health Gorilla is an American healthcare interoperability company in Coral Gables, Florida, operating a clinical data exchange network and designated a QHIN under TEFCA in December 2023.
Health Goth
Health Goth: a 2013 Portland-born fashion aesthetic fusing monochrome technical sportswear with goth and cyberpunk imagery, founded as a Facebook community by Magic Fades' Mike Grabarek, Jeremy Scott, and Chris Cantino, distinct from the goth music subculture.
Health hazard
Health hazard: any agent or condition with the potential to cause illness, distinct from safety hazards causing injury. Covers hazard versus risk, hazard quotients, screening tools, EPA, NIOSH, and UKHSA assessment frameworks.
Health impact assessment
A health impact assessment (HIA) is a structured process, applied before a decision is made, that judges how a proposed policy, plan, or project could affect population health.
Health Inequities
Health inequities are avoidable, unjust differences in health across population groups, also called health disparities or health inequalities. They arise from social determinants such as income, housing, education, and discrimination, with a 33-year life expectancy gap between countries.
Health informatics
Health informatics, also called medical or clinical informatics, is the interdisciplinary field applying computer and information science to health data, aiming to improve human health and care delivery.
Health insurance
Health insurance: pooled coverage of medical costs via premiums, deductibles, copays, and coinsurance; also called UHC when universal. Covers market failures (adverse selection, moral hazard), history from Bismarck's 1880s Germany, and US ACA marketplace rules.
Health insurance in the United States
Health insurance in the United States: mixed employer-based, Medicare, Medicaid, and ACA marketplace system; 92% insured in 2024, no universal coverage, 18% of GDP spent on health care.