Rheumatoid factor is an immune system protein. Doctors can measure its levels using a blood test to help diagnose autoimmune conditions, including rheumatoid arthritis. Here, we explain the test, normal rheumatoid factor... more
Decaffeinated coffee, or decaf, is similar to regular coffee but contains very little caffeine. Research suggests that drinking decaf is not harmful and may share some of the health benefits... more
A lump on the areola may have a variety of causes, including skin irritation and bacteria. Treatments depend on the cause. Learn more about the causes and treatments... more
Attention deficit hyperactivity disorder (ADHD) is a common behavioral disorder that can occur in both children and adults. Research suggests that there may be a link... more
Attention deficit hyperactivity disorder (ADHD) is a common behavioral disorder that can occur in both children and adults. Research suggests that there may be a link between a dopamine imbalance in the... more
End-diastolic volume is how much blood is in the ventricles after the heart fills up with blood, but before it contracts to pump the blood around the body. Doctors use end-diastolic volume to calculate... more
Status asthmaticus is a life-threatening asthma state with symptoms that include anxiety, fatigue, and shortness of breath. An inhaler may not treat the symptoms, so a person should seek immediate... more
Researchers have discovered four previously unknown proteins in snail mucus, at least three of which have the potential to fight harmful bacteria. more
New research finds that immuno-PET imaging can accurately detect IBD in mice. The findings reveal information about specific inflammation mediators. more
New research finds that immuno-PET imaging can accurately detect IBD in mice. The findings reveal information about specific inflammation mediators. more
In a 'landmark in drug discovery,' researchers achieved, for the first time, the total synthesis of a potent anticancer compound called halichondrin. more
Phantom sensations — misattributing tactile sensations to the wrong parts of the body — are a puzzling phenomenon. What can they tell us about the brain? more
Antidepressants can help treat a wide range of mental health conditions. It is possible to take too many, with symptoms including nausea, vomiting, and tremor. Learn more about... more
Antidepressants can help treat a wide range of mental health conditions. It is possible to take too many, with symptoms including nausea, vomiting, and tremor. Learn more about overdosing on antidepressants here. more
Intermittent asthma causes symptoms such as shortness of breath and coughing. However, these symptoms are not present all the time. Treatment includes the use of inhalers. Learn more about intermittent... more
Cold-induced asthma involves cold weather triggering asthma symptoms such as coughing and wheezing. Treatment can include using an inhaler and moving to a warmer environment. Learn more here. more
Cardiorespiratory endurance provides an indication of a person's physical fitness and measures how well the heart, lungs, and muscles perform during physical activity. People can improve their cardiorespiratory endurance through... more
Physical exams are routine checkups of a person’s general health. A healthcare professional will visually inspect, feel, or listen to different areas of a person’s body to look... more
Stress can make a person more susceptible to asthma triggers. In this article, we look at the link between stress and asthma. We also discuss ways to reduce stress. more
Autism spectrum disorder and ADHD are conditions that doctors link to brain development. Asperger's syndrome is no longer a separate diagnosis and typically refers to a... more
Autism spectrum disorder and ADHD are conditions that doctors link to brain development. Asperger's syndrome is no longer a separate diagnosis and typically refers to a mild form of autism. In this... more
Lung diffusion tests measure how well a person’s lungs take in oxygen from the air. This test helps diagnose and monitor a range of lung-related conditions. Learn about... more
Epinephrine and norepinephrine are chemical messengers that play an important role in the body’s fight or flight response. Although these two chemicals are similar, they act on different... more
Epinephrine and norepinephrine are chemical messengers that play an important role in the body’s fight or flight response. Although these two chemicals are similar, they act on different parts of the body. Doctors also... more
Lupus is an autoimmune disease that causes a wide variety of symptoms. In this article, see pictures of lupus symptoms and learn more about the different types of this condition. more
Analyzing two features of language use with machine learning could be a way to predict which individuals will later develop psychosis, study finds. more
Better understanding drug resistance in bacteria can lead to more effective approaches. In laboratory and mouse tests, a new strategy shows promise. more
Scientists find a key difference between Alzheimer's and frontotemporal dementia: the latter affects a person's 'moral emotions' while the former does not. more
Scientists find a key difference between Alzheimer's and frontotemporal dementia: the latter affects a person's 'moral emotions' while the former does not. more
Researchers have established that being in nature can boost well-being, but a new study asks exactly how much we need each week to feel the full... more
Researchers came up with an innovative approach for comparing foods with similar nutritional labels and found that they affect gut bacteria differently. more
Doctors prescribe the two drugs guanfacine and Adderall for attention deficit hyperactivity disorder, which people more often call ADHD. These medications work in different ways and have different... more
Doctors prescribe the two drugs guanfacine and Adderall for attention deficit hyperactivity disorder, which people more often call ADHD. These medications work in different ways and have different side effects. Learn about both here,... more
Acid, or LSD, is a drug that can cause hallucinations and feelings of euphoria. In this article, learn how long these effects last and how long... more
Vegetarians and vegans do not eat meat and fish. While many vegetarians choose to consume eggs and dairy products, vegans do not consume these animal byproducts.... more
Treatment options for multiple sclerosis (MS) flares include steroids. These can help reduce symptoms such as visual disturbances and weakness. Their effectiveness is relatively high. Learn more about... more
Razor bumps can develop when a person shaves and the hair gets trapped beneath the skin. In this article, learn about how to get rid of razor bumps and prevent future ones... more
Antibiotics may be an effective treatment option for a tooth infection. There are many different types of antibiotic and many other potential remedies. Learn more about... more
A bullectomy is a type of surgery to remove enlarged air sacs called bullae from the lung. Learn more about the uses, procedure, and risks of a bullectomy here. more
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