Have you ever wondered why it’s so tough to put down that last slice of bacon? Part of the answer is that humans are evolutionarily programmed to crave fatty foods, which offer the biggest bang for the buck, nutritionally speaking, with more than twice the calorie density of protein- or starch-rich food.
SuperAgers, aged 80 and above, have distinctly different looking brains than those of normal older people, according to new Northwestern Medicine research that is beginning to reveal why the memories of these cognitively elite elders don’t suffer the usual ravages of time.
In the 1980s, immunotherapy researcher Lieping Chen, M.D., Ph.D., embraced the career goal of curing one cancer. That lofty-seeming goal is beginning to look more modest today. Recent clinical trials have shown that one cancer after another is vulnerable to immune modulation therapy, a cancer-fighting strategy Chen pioneered that for years was considered marginal.
In 2008, the World Health Organization announced a global effort to eradicate malaria, which kills about 800,000 people every year. As part of that goal, scientists are trying to develop new drugs that target the malaria parasite during the stage when it infects the human liver, which is crucial because some strains of malaria can lie dormant in the liver for several years before flaring up.
Since December, more than 100 people in 14 states have been infected with measles in an outbreak traced to Disneyland, Melissa Stockwell, MD, MPH, assistant professor of pediatrics and of population & family health, has spoken out to debunk seven myths about the measles vaccine.
The largest U.S. measles outbreak in recent history isn't the one that started in December at Disneyland. It happened months earlier in Ohio's Amish country, where 383 people fell ill after unvaccinated Amish missionaries traveled to the Philippines and returned with the virus.
The drop-off in Ebola infections is good news for Liberia, but it means there are not enough sick people to take part in the study.
Federal health officials faced tough questions from lawmakers Tuesday about why they didn't take steps to produce a better flu vaccine as it became clear that this year's version wasn't going to offer much protection.
A preliminary study suggests stem cell transplantation may reverse disability and improve quality of life for patients with relapsing-remitting multiple sclerosis.
Humans have fewer remnants of viral DNA in their genes compared to other mammals.
For decades, scientists have recognized the upright posture exhibited by chimpanzees, gorillas, and humans as a key feature separating the “great apes” from other primates, but a host of questions about the evolution of that posture — particularly how and when it emerged — have long gone unanswered.
Using the same technology that made smartphone cameras possible, scientists at Columbia University Medical Center are capturing images of individual molecules at a level of detail never before possible—including images of a molecule implicated in heart disease and muscle diseases.
By scanning the brains of people engaged in selective attention to sensations, researchers have learned how the brain appears to coordinate the response needed to ignore distractors. They are now studying whether that ability can be harnessed, for instance to suppress pain.
Bottles of Walmart-brand echinacea, an herb said to ward off colds, were found to contain no echinacea at all. GNC-brand bottles of St. John's wort, touted as a cure for depression, held rice, garlic and a tropical houseplant, but not a trace of the herb.
Despite improvements in the past few decades with surgery, chemotherapy and radiation therapy, a predictably curative treatment for glioma does not yet exist. New insights into specific gene mutations that arise in this often deadly form of brain cancer have pointed to the potential of gene therapy, but it’s very difficult to effectively deliver toxic or missing genes to cancer cells in the brain.
Farmers have long noted a correlation between rainstorms and disease outbreaks among plants. Fungal parasites known as “rust” can grow particularly rampant following rain events, eating away at the leaves of wheat and potentially depleting crop harvests.
"Washington University cardiologist Zachary Goldberger once made music out of heartbeats. Now, with a Beethoven scholar and a medical historian, he has discovered that three musical compositions that Beethoven created while stressed are arrhythmic in a way mirroring the composer's own probable heart arrhythmias."
A team of international scientists has discovered a new mechanism by which immune cells in the skin function act as the body's 'border control', revealing how these cells sense whether lipid or fat-like molecules might indicate the presence of foreign invaders.
Every day in hospitals around the world, patients suffer painful allergic reactions to the medicines they are given. The reactions, known as pseudo-allergies, often cause patients to endure itchiness, swelling and rashes as an unwanted part of their treatment plan. The reactions can be so severe they may stop patients from taking their needed medications and sometimes can even prove fatal.
Researchers have determined that two mutations on a single gene can interact in a way that lowers the carrier's risk for a heart attack. The variants are found in a gene called DBH, which regulates an enzyme involved in the conversion of dopamine to norepinephrine - both of which are important chemical messengers and hormones.
The thousands of mitochondrial DNA (mtDNA) molecules present in each cell are known primarily for their role converting food and oxygen into energy. But Yale researchers have identified an unexpected relationship between mtDNA and the innate immune response.
A new study by Tel Aviv University's Prof. Illana Gozes, published in Translational Psychiatry, may offer insight into the pathology of both autism and Alzheimer's by revealing that different activities of certain proteins in males and females cause gender-specific tendencies toward these diseases.
Britain's House of Commons gave preliminary approval to permitting scientists to create babies from the DNA of three people, a technique that could protect some children from inheriting potentially fatal diseases from their mothers. Read more...
The discovery of a new reset button for the brain’s master biological clock could eventually lead to new treatments for conditions like seasonal affective disorder, reduce the adverse health effects of working the night shift and possibly even treat jet lag.