A new study has identified a link between stress hormones and the recurrence of cancer. UPI reports the findings may explain why cancers can return long after seemingly being cured with chemotherapy or surgery. The study showed stress hormones and immune cells called neutrophils may awaken dormant cancer cells and cause tumors to regrow -- even after treatment -- according to a study published Wednesday by Science Translational Medicine. Tumor recurrence may be facilitated by common stress.
As the pandemic grinds on and the holidays loom, many people may be wishing they could get their brains working better. Fortunately, a new, double-blind study finds having a nice, hot cup of cocoa is not only good for the soul--it's also good for the brain. UPI reports British and American researchers say flavanol-rich cocoa drinks can improve brain oxygenation and cognitive performance in healthy adults. Flavanols are small molecules found in many fruits and vegetables, and cocoa, too.
People who have recovered from COVID-19 are safe from reinfection with the virus for at least six months. The data is according to a study posted online Friday by researchers at Oxford University in England. To date, studies have found that antibodies against the new coronavirus offer varying levels of immunity from infection. According to UPI, some researchers have found that immunity may be only 90 days in some people.
A new study reveals a COVID-19 vaccine under development in England safely promotes an immune response against the virus. According to UPI, the vaccine is in Phase 2 of clinical trials with Astra Zeneca, and is particularly effective in elderly recipients who are over age 70. Researchers say the finding of the 'robust' responses in older people in their study is both significant and encouraging.