Gerontology & Geriatrics

Bolstering the reliability of epigenetic clocks

Epigenetic clocks are powerful biomarkers based on DNA methylation that were developed to track aging in population studies, clinical trials, and personal health applications. Intended to measure biological age, they strongly ...

Health

Shift work increases the severity of strokes later in life

As most Americans wind down for bed, 15 million people are just clocking into work. These hospital workers, emergency responders, factory operators and others are among the 20 percent of the world's population who do shift ...

Alzheimer's disease & dementia

Improving research on diet and dementia

Anyone searching the internet for brain healthy foods will find no shortage of stories making dietary recommendations. Some of those stories point to observational studies that have suggested a link between the lower or greater ...

Diseases, Conditions, Syndromes

Review shines a light on the overlooked virus, hepatitis D

Viral hepatitis is a serious health condition that affects the liver. While hepatitis B and C viruses are commonly targeted by public health measures aiming to reduce the disease burden, there is another, less commonly known ...

Health

Social stress can speed up immune system aging

As people age, their immune systems naturally begin to decline. This aging of the immune system, called immunosenescence, may be an important part of such age-related health problems as cancer and cardiovascular disease, ...

Medical research

Research needed to understand impact of low-dose radiation

Multidisciplinary research is needed to improve understanding of the impact of low doses of radiation on human health, according to a report published online June 2 by the National Academies of Sciences, Engineering, and ...

Medications

Researchers find that aspirin alters colorectal cancer evolution

Cancer starts when cells start dividing uncontrollably. Scientists have known that taking aspirin can help protect against the development of colorectal cancer—cancer afflicting the colon or rectum—but the exact reason ...

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Epidemiology

Epidemiology is the study of health-event, health-characteristic, or health-determinant patterns in a population. It is the cornerstone method of public health research, and helps inform policy decisions and evidence-based medicine by identifying risk factors for disease and targets for preventive medicine. Epidemiologists are involved in the design of studies, collection and statistical analysis of data, and interpretation and dissemination of results (including peer review and occasional systematic review). Major areas of epidemiological work include outbreak investigation, disease surveillance and screening (medicine), biomonitoring, and comparisons of treatment effects such as in clinical trials. Epidemiologists rely on a number of other scientific disciplines such as biology (to better understand disease processes), biostatistics (to make efficient use of the data and draw appropriate conclusions), and exposure assessment and social science disciplines (to better understand proximate and distal risk factors, and their measurement).

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