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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

Hormone wants to keep body at weight set point

Researchers found that ghrelin was significantly elevated with weight loss in exercising subjects, indicating a potential role for ghrelin in returning the body to a prior set-point for body weight. The study suggests that exercise training itself has little impact on ghrelin levels.

Even occasional exercise can extend life for older people

A study of over 3,200 older adults found that even occasional exercise can significantly reduce the risk of death from heart disease and other causes. Physical activity was found to improve survival rates by 28-40%, depending on frequency and intensity.

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Annals of Internal Medicine, tip sheet, June 15, 2004

A study of 300 people found that those with more abdominal fat were four times more likely to develop hypertension. Meanwhile, a six-year study of middle-aged men found no correlation between regular aerobic exercise and reduced artery thickening.

Deciphering the limits to human maximal exercise performance

Research reveals that humans can't pump enough blood to meet the demand of highly trained muscles during exercise, leading to hypotension. This finding has implications for understanding reduced exercise tolerance in pathologic conditions and may guide new therapeutic approaches.

Exercise more critical than calcium for adolescent bones

A recent study suggests that exercise is the predominant lifestyle determinant of bone strength in young women, with daily calcium intake showing little impact on adult bone mass. The research found that physical activity accounted for between 16% and 22% of variation in hip bone mineral density and bending strength.

Yoga reduces fatigue in MS patients, OHSU study finds

A randomized controlled trial found that yoga is as effective as aerobic exercise in improving measures of fatigue in multiple sclerosis patients. The study also showed improvements in physical health and quality of life among participants.

Many cancer patients turn to complementary therapies for healing

The study found that 85% of cancer patients use prayer as a common non-medical therapy for healing, while 25% change their diets or use mega-vitamins to improve their health. Patients often don't discuss these therapies with their doctors due to communication gaps.

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Exercising after menopause may help reduce bone loss

Exercise has been shown to improve physical fitness, lower back pain, and cholesterol levels in early postmenopausal women. After 26 months, the exercise group experienced significant increases in physical fitness and reductions in bone loss compared to the control group.

Iron supplements help only certain non-anemic women

A study by Cornell University found that iron supplements improve exercise performance in non-anemic women, but only those with tissue-iron deficiency. Women with low liver iron but no anemia showed no functional impairments.

Pool-bound plyometrics help you get stronger with less pain

Researchers found that exercising in a swimming pool during plyometric training significantly decreased muscle soreness two to three days after the workout. Muscle strength and mass increased in both groups, with no significant differences between gym-based and pool-based exercise.

Weight loss and exercise effective arthritis treatment

Researchers from Wake Forest University Baptist Medical Center and Wake Forest Health found a 24% improvement in physical function among participants who combined weight loss with moderate exercise. Participants reported significant improvements in knee pain, with a decrease of over 30%.

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Is a single bout of exercise helpful or harmful in getting a good night's sleep?

A new study found that non-habitual acute resistance and aerobic exercise negatively affected sleep quality and length. Volunteers reported waking up significantly more times at night after exercise compared to before, while objective measures of sleep using an actigraph revealed no significant differences between exercise conditions.

Longer-term, moderate exercise improves immune activity

A study found that moderate exercise over 11 months improved immune activity, increased muscle strength, and decreased total cholesterol and LDL levels in older adults. This suggests a simple home-based exercise program can provide important health benefits for aging individuals.

The preference for sweetened foods may decline after exercise

A study found that exercise can reduce the preference for sweetened fluids in rats, with a temporary increase in perception of sweetness after consumption. The researchers suggest that this could lead to the development of foods and supplements that meet post-exercise nutritional needs.

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'Use it or lose it' warning rings true when it comes to exercise

Researchers found that older adults with chronic obstructive pulmonary disease (COPD) who continued to exercise regularly maintained improved cognitive, psychological, and physical function over a year, while those who stopped exercising experienced significant declines.

Active lifestyle reduces risk of endometrial cancer

A study found that regular exercise, as well as routine activities like walking for transportation or performing household chores, can reduce a woman's risk of endometrial cancer. The research team assessed physical activity from various periods in life and found significant benefits for women with higher levels of physical activity.

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A little music with exercise boosts brain power, study suggests

A recent study from Ohio State University found that listening to music during exercise improves verbal fluency test scores in cardiac rehabilitation patients. The study also revealed that participants reported feeling better emotionally and mentally after working out regardless of whether they listened to music.

Internet program and videos net nutritional benefits for kids

Researchers used an interactive internet program and short videos to reduce fat intake and increase exercise levels among low-income seventh graders. The study showed that students who attended at least half of the sessions increased their physical activity and reduced dietary fat.

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Exercise sharpens focus, decision-making among aging adults

A six-month aerobic exercise program improved cognitive performance on a decision-making task in older adults by reducing behavioral conflict. The study used functional magnetic resonance imaging to measure changes in brain activity in middle-frontal and superior parietal regions, which were associated with improved performance.

Modest exercise can prevent weight gain

A randomized controlled trial suggests that modest exercise, such as 30 minutes of daily walking, can not only prevent weight gain but also lead to additional loss of weight and fat. The study found a dose-response effect between the amount of exercise and decreases in measurements of central obesity and total body fat mass.

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Even moderate amounts of exercise can prevent weight gain

A recent study found that even moderate amounts of exercise can help prevent weight gain in overweight individuals. The research, published in the Archives of Internal Medicine, suggests that more intense physical activity is necessary for weight maintenance and that a modest amount of exercise can reverse positive caloric imbalances.

Cobblestone mat walking shows health benefits for elderly

A study by Oregon Research Institute found that cobblestone mat walking improves pain relief and mental well-being in older adults. Participants who walked on the cobblestone mat experienced enhanced physical activity and reduced stress levels compared to those in an attention control group.

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Safe, friendly neighborhoods may encourage exercise

Researchers found that individuals with favorable views of their community were more likely to meet weekly physical activity recommendations. Younger participants, especially those living within $10,000-$20,000 and above $35,000 annually, exhibited higher exercise adherence rates.

Self-management improves course of low back pain

A self-management program improved mental and physical functioning in low-income adults with low back pain. The study, funded by the NIH and VA, showed empowering individuals to deal with their pain through exercise and behavior changes significantly reduced symptoms.

Brain study shows some animals crave exercise

A new study from University of Wisconsin-Madison found that mice denied access to a running wheel showed higher levels of neuronal stimulation in certain brain regions, indicating motivation to run. This suggests that some animals may have an addictive nature towards exercise.

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Self-management program helps patients with acute low back pain

A self-management program developed by Indiana University researchers significantly reduced disability, improved mental functioning, and increased physical activity among patients with acute low back pain. The program focused on boosting patient confidence and motivation to incorporate daily activities that alleviate symptoms.

Duke researchers link nitric oxide, vessel health

Researchers linked systemic nitric oxide production with changes in the endothelial lining of arteries after stress. Exercise was found to improve the marker in patients at risk for cardiovascular disease.

News tips for Wednesday, Nov. 12, 2003

Cardiac researchers report improved blood flow to ischemic heart muscle using granulocyte colony-stimulating factor (G-CSF), a potential new treatment for intractable ischemia. Meanwhile, ICD patients may be safer with vigorous exercise, while daytime sleepiness significantly affects the quality of life of angina patients.

With flu season coming, don't forget…exercise?

A new study shows that moderate exercise reduces susceptibility to upper respiratory tract infection by enhancing immune function. Soluble oat fiber â-glucan also boosts immunity, and combining it with exercise may have additional benefits.

A heart-strengthening pace: brisk but comfortable

A recent study by the American Heart Association recommends regular brisk but comfortable walking to boost cardiovascular fitness. Middle-aged obese adults walked at a self-selected pace and achieved recommended levels of exercise intensity.

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Mix of factors related to exercise among minority women

A three-year study of 4,122 women from diverse backgrounds found that age, confidence, and social connections play significant roles in exercise behavior. However, unexpected factors such as family size and religious attendance also influenced physical activity levels.

Heart attack patients don't maintain exercise program

A study of 83 heart attack patients found that 12% did not exercise at all over the next year, despite completing a cardiac rehabilitation program. The number of people exercising decreased significantly, with most sessions lasting only 35-45 minutes and averaging only 28.2% time spent in the targeted heart rate zone.

Study finds hispanic heart patients have best survival rates

A recent study by the US Department of Veterans Affairs found that Hispanic heart patients had a significant survival advantage compared to their white and African-American counterparts. After adjusting for age and clinical data, Hispanic patients were only about 80% as likely to die as whites or blacks.

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Exercise for elders: It's never too late

Research highlights the importance of exercise for older adults, dispelling stereotypes that age means poor health. Regular physical activity can benefit elderly individuals as much as younger people, enabling them to maintain independence and manage daily functions.

Working out may keep breast cells working well

A USC study found that physical activity can reduce the risk of breast carcinoma in situ (BCIS) by up to 35%, particularly among women who exercise more than four hours a week. The exact mechanism is unclear, but hormones and immune-boosting effects are potential theories.

Chronic pain: treatment, rehabilitation, and quality of life

Researchers investigated chronic pain management through surveys, questionnaires, and studies. The results highlighted the importance of pain treatment outcomes, associations with health-risk behaviors, and post-traumatic stress disorder relationships. Additionally, a new exercise program improved arm and hand recovery after stroke.

'Good' chemical, neurons in brain elevated among exercise addicts

A study found that exercise increases BDNF and neurogenesis in mice, but high levels of these chemicals don't necessarily improve learning. In fact, high-running mice perform poorly in maze tests, suggesting a potential 'tipping point' where too much exercise becomes detrimental.

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