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Life Sciences

Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.

447,757 articles | 2542 topics

Health and Medicine

Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.

431,843 articles | 751 topics

Social Sciences

Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.

260,756 articles | 745 topics

Physical Sciences

Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.

257,913 articles | 1552 topics

Applied Sciences and Engineering

Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.

225,386 articles | 998 topics

Scientific Community

Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.

193,043 articles | 157 topics

Space Sciences

Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.

29,662 articles | 175 topics

Research Methods

Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.

21,889 articles | 139 topics

Mathematics

Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.

3,023 articles | 113 topics

Breast cancer treatment reduces risk of heart disease

Tamoxifen has been shown to reduce breast cancer recurrence by up to 50% and lower heart disease risk in women with breast cancer. The study found that current use of tamoxifen was associated with a significantly reduced risk of heart disease, particularly in women who had completed less than two years of therapy.

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Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Rheumatoid arthritis linked to excess risk of congestive heart failure

Researchers found that rheumatoid arthritis patients are twice as likely to develop congestive heart failure, independent of other cardiovascular risk factors. This association remained consistent across all ages and sexes, and was particularly pronounced among those with rheumatoid factor-positive RA.

Animal study shows link between nicotine and atrial flutter

Researchers found that nicotine caused a significant increase in atrial interstitial fibrosis and electrical remodeling in hearts with myocardial infarction, leading to atrial flutter. The study suggests a causal link between nicotine and atrial flutter, potentially informing new therapeutic strategies.

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Depression tied to higher risk of heart disease death

Researchers found that depressed patients are twice as likely to die within two years after their first heart disease episode compared to non-depressed patients. The study also discovered a stronger link between depression and higher risk of death in studies published before 1992.

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Salt-water minnow research helps explain human cardiology

Researchers discovered a genetic set of keys that unlocks the mystery of why some people can eat fatty foods without suffering from heart disease. The study found significant variations in genes associated with sugar and fat metabolism, which explain much of the variation in cardiac metabolism.

New stroke prevention therapy as effective as invasive surgery

A new minimally invasive procedure using angioplasty and stenting is shown to be as effective as surgery in preventing strokes. The treatment involves widening the carotid artery to improve blood flow, with comparable rates of complications and a low rate of re-narrowing.

Sony Alpha a7 IV (Body Only)

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Annals of Internal Medicine, tip sheet, Nov. 16, 2004

A recent review of health journals found limited evidence on reducing health disparities, but identified a significant association between high-dose steroid use and increased cardiovascular risk. The review also provided new guidelines for blood thinner dosing in older patients with atrial fibrillation.

University health study identifies undiagnosed diabetics

A University of Edinburgh health study found that people with previously undiagnosed diabetes are at a similar increased risk of death from cardiovascular disease as those with known diabetes. The researchers suggest using simple fasting blood sugar tests to identify individuals at high risk of heart disease and stroke.

Families who eat out pass up fruits and veggies

A study by Saint Louis University researcher Amanda Harrod found that 73% of young families in Missouri's bootheel don't consume enough fruits and vegetables. Parents who eat out frequently also tend to have less produce at home, often due to a lack of taste preference.

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Genetic testing can identify ischemic and nonischemic heart failure

Researchers at Johns Hopkins Medicine have developed a genetic test that accurately distinguishes between ischemic and nonischemic heart failure. The test uses gene expression profiling to identify 90 genes that differentiate the two forms of the disease, improving accuracy and potentially leading to better treatment outcomes.

DASH diet may do more than lower blood pressure

A new study suggests that the DASH diet's numerous fruits, vegetables, and whole grains contribute significantly to its health benefits. The diet's high intake of phytochemicals may help protect against various chronic diseases, including cancer, heart disease, and other health conditions.

Ephedrine and unheralded sudden cardiac death

A new study by the American Medical Association links ephedrine to unheralded sudden cardiac death in individuals with asymptomatic heart disease. The study found that ephedrine can cause a potentially lethal arrhythmia when combined with a heart blockage, increasing the risk of fatal outcomes.

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New study will tackle three major killer diseases

A new study, ORCADES, will investigate the roles of inheritance and environment in causing three major killer diseases. The study aims to identify genes that predispose individuals to illness and understand the impact of lifestyle factors on disease development.

Exercise test predicts heart events in high risk asymptomatic men

A study suggests exercise testing may benefit intermediate to high-risk asymptomatic men by identifying those with increased coronary risk, but also finds that greater exercise capacity predicts lower CHD risk. The results support using the Framingham Risk Score to inform exercise test ordering in these patients.

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Heart gene yields insights into evolution, disease risk

A study of 2,400 British middle-aged men found that the positive selection for a gene variant in the MMP3 gene resulted in a 43% lower incidence of coronary artery heart disease. The researchers suggest that this variation is not just harmless mutation, but rather a process contributing to population health.

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Rare mutations can significantly increase risk factor for heart disease

Researchers identified rare genetic mutations that significantly increase heart disease risk by focusing on individuals at the extreme ends of HDL levels. These findings provide direct evidence that rare variations in DNA can affect HDL levels, opening up new avenues for treatment and diagnostic targets.

Scientists identify compounds that mimic calorie restriction

Researchers found genetic changes in mice fed a low-calorie diet that suppressed diseases and protected against chemical exposure. Compounds mimicking these changes target key receptors, including PPARalpha, with potential for developing life-extending drugs.

New study explodes myth about vegetarian diet

A new study shows that transitioning to a plant-based diet allows individuals to eat to satiety while losing weight. The study found that patients on a low-fat vegetarian diet experienced significant weight loss and improved cardiovascular health, with 89% feeling mostly or completely used to the diet after 14 weeks.

Scientists suggest framework for epigenetics in common disease

Researchers propose a new approach to understanding epigenetics in common diseases, such as cancer, diabetes, and heart disease. The framework aims to analyze epigenetic marks across the entire genome, revealing their role in disease variability and progression.

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Cardiologists studying new screening test for heart disease

A new screening test for heart disease has been developed by cardiologists that measures blood volume in the leg to gauge artery stiffness. The study found that this non-invasive test was strongly predictive of aortic atherosclerosis, a key indicator of coronary heart disease.

Gene therapy alternative to calcium channel blockers

Using guinea pigs, researchers increased production of G-protein Gem, which decreased calcium current densities by 30-90% and helped steady irregular heartbeats. Gene therapy shows promise as an alternative to calcium channel blockers with fewer side effects.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

No medical benefit from liposuction

Removing abdominal fat by liposuction did not improve insulin sensitivity or reduce risk factors for heart disease. However, the procedure was found to be safe for large-volume fat removal.

Former smokers can regain health and improve quality of life

A Duke University study found that former smokers who quit for 15 years or more have no significant difference in healthy life remaining compared to non-smokers. Heavy smoking reduces years of healthy life by approximately two years for men and 1.66 years for women, highlighting the importance of quitting now.

Chronic diseases need global health attention

Chronic diseases are the largest cause of death worldwide, with a projected increase in global prevalence over the next two decades. Key risk factors include tobacco use, unhealthful diets, and lack of physical activity, with most cases occurring in developing countries.

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OTC statins: A bad decision for public health

The UK government has rejected proposals to sell simvastatin over-the-counter for the primary prevention of heart disease due to financial reasons. This decision may increase inequalities as many people cannot afford the medication, which is currently prescribed to around 1.8 million people in the UK.

Mid-life heart disease risk factors linked to dementia in late-life

Researchers linked mid-life heart disease risk factors to increased dementia risk later in life. The study of over 11,000 participants found that those with four key risk factors had nearly three times the chance of developing dementia compared to those with none. Presence of each risk factor added a 20-40% greater risk for developing ...

AmScope B120C-5M Compound Microscope

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Newly discovered gene controls levels of 'bad' cholesterol in mice

A newly discovered gene, Pcsk9, has been found to regulate the uptake of bad cholesterol from the blood by affecting liver cells' LDL receptors. This study provides a potential therapeutic approach to treating high blood cholesterol levels, a major risk factor for heart disease.

Valve disease impacts survival while awaiting heart transplant

A Temple University study found that patients with diseased aortic valves before receiving an LVAD have significantly lower survival to transplant rates. Conversely, those with normal aortic valves have higher survival rates, suggesting the importance of valve repair or upgrade in heart transplant optimization.

Two-way link between heart disease and autoimmunity

Researchers found that patients with autoimmune disease have higher levels of fatty deposits in blood vessels, which cause heart disease. Additionally, atherosclerosis worsens autoimmune symptoms, implying that low-fat diets may benefit patients with autoimmune disease.

Increasing the body's good cholesterol may be a pill away

A new study reveals that torcetrapib significantly increases levels of HDL cholesterol in patients with low levels, which can help reduce the risk of heart disease. The drug works by inhibiting the transfer of cholesterol from HDL to LDL, and its effectiveness is maintained when given in combination with a statin.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Folic acid fortification may have lowered stroke deaths

A recent study found that folic acid fortification was associated with a significant decline in stroke-related mortality rates. The researchers estimated that 31,000 stroke-associated deaths and 17,000 deaths related to ischemic heart disease may have been prevented each year since fortification was implemented.