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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

Study links mammography use to other preventive behaviors

A recent study found that older women who engage in multiple preventive practices are more likely to have regular mammograms. The research suggests that health education efforts emphasizing the importance of lifelong health promotion can improve mammography use among this demographic.

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Volunteers can help with mammography promotion

A study found that volunteers' community activities, such as bingo nights and promotions, significantly increased mammography use among rural residents. The approach also led to increases in mammography among uninsured women and those without female physicians.

Use of mammograms in older women questionable, say UCSF researchers

A new study by UCSF researchers suggests that screening for breast cancer in elderly women may not be worth the cost, citing a small increase in life expectancy. The study also highlights the potential downsides of mammograms, including false positives and anxiety caused by abnormal results.

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New computer model supports the importance of annual mammograms

A new computer model suggests that more frequent mammogram screenings can dramatically reduce breast cancer deaths. The study found that prompt annual screening could result in a 51% reduction in breast cancer deaths, with twice-yearly screenings potentially cutting death rates by as much as 80%.

Women at high risk for breast cancer may avoid mammograms

A new study found that women at high risk for breast cancer who are also anxious and lack self-control are less likely to get a mammogram. Researchers suggest problem-solving training may help address this issue among the most distressed women.

Radiologists Successful At Detecting Breast Cancer Using New Technology

A recent study at Wake Forest University Baptist Medical Center shows that radiologists can accurately detect breast cancer using digital mammography technology as effectively as traditional film-based methods. The technology has the potential to improve detection rates and reduce deaths from breast cancer.

Statistician: Mammography Is A 'Lottery' In Women 40-50 Years Old

A study of eight large clinical trials found that mammography screenings for women in their 40s add only about five days to life expectancy and may not significantly reduce breast cancer deaths. However, the overwhelming proportion of women experience no benefit from screening.

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Optical Biopsy Would Be Fast, Painless And Inexpensive

Researchers at the University of Illinois have developed a novel optical biopsy technique using near-infrared light to detect hidden growths in breast tissue. The method shows strong correlation between infrared signatures and tumor types, potentially eliminating painful needle biopsies or expensive MRI procedures.

Mammography Usefulness Does Not Change At Age 50

Researchers analyzed data from over 72,000 screening mammograms to show a steady increase in cancer detection across all ages, with no abrupt jump at 50. The study challenges previous conclusions that suggested an age-related change in mammography's effectiveness, supporting the continued use of screening for women aged 40-49.

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Ability To Read Mammograms Varies Widely

A study found that the ability to read mammograms varies significantly among general radiologists, with scores ranging from 8% to 98%. The experts detected more cancers but were also more likely to flag normal cases as abnormal.

Mammography Quality Law Has National Implications

A new analysis found that Michigan's strict mammography regulations, enacted in 1989 and 1994, significantly improved the quality of mammograms without limiting access to cancer-screening procedures. The study suggests that federal mammography standards will also have positive results.

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Mammography Messages Need To Be Tailored For Older Women

A study found that older women, especially minorities, get the fewest mammograms due to fears of finding a lump and erroneous beliefs about breast cancer. Tailoring messages to address these concerns can encourage more women to undergo screening.

Numeracy A Problem For Women Making Decisions On Mammography

A study of 287 women found that poor numeracy skills and basic probability concepts can prevent women from accurately assessing the benefits of mammography screening. The researchers used four different formats to present statistical information, but found that low numeracy levels hindered women's ability to apply this information accu...

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3-D Imaging May Cut Unnecessary Breast Biopsies

The technique correctly ruled out a diagnosis of cancer in 18 of 30 women whose suspicious mammograms were later shown to be benign. Additionally, none of the 14 cancers in the group were misdiagnosed by the 3D imaging method.

Deaths From Breast Cancer Decreasing

The number of women dying from breast cancer is decreasing due to earlier detection through mammography. Physicians play a key role in recommending and performing mammograms, with 93-94% of women complying with requests.

Menstrual Phase Linked To Ineffective Mammograms

Research suggests that women under 50 may experience false-negative mammogram results when screened during the luteal phase of their menstrual cycle. By scheduling mammograms during the first half of their cycle, the accuracy of breast cancer detection can be improved.

Study: Black Women Less Often Advised To Undergo Mammography Than Whites

A new study by University of North Carolina at Chapel Hill researchers found that black women are half as likely to report ever having had a mammogram and 17% less likely to have had one in the past year compared to white women. The single strongest predictor of whether a woman undergoes the test was her doctor's recommendation, which ...