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When it comes to the COVID-19 pandemic, 2021 was a year of highs and lows for the United States....Read More

The volume of prescription opioid pain medications dispensed by retail pharmacies in the United States has declined over the past decade, with larger drops seen in urban areas, an Annals of Internal Medicine study found....Read More

More than one in five women experience menstrual cycle irregularity, potentially impacting their ability to accurately recognize a potential pregnancy early on, researchers said in a study published Monday....Read More

The “battle of the sexes” starts in the womb, and it appears to play a role in fetal development, a study published Monday by the journal Developmental Cell found....Read More

Currently available COVID-19 vaccines are much less effective against the Delta variant of the virus, though they still prevent serious illness in the vast majority of those inoculated, a JAMA Network Open study found....Read More

People incarcerated as adolescents and teens are more likely to die at a younger age than the rest of the population, an analysis published Thursday by JAMA Network Open found....Read More

People exposed to formaldehyde at work for extended periods may be at higher risk for thinking and memory problems as they age, a study published Wednesday by the journal Neurology found....Read More

People with inflammatory bowel disease have more microplastics in their feces than otherwise healthy adults, a study published Wednesday by the journal Environmental Science and Technology found....Read More

Recipients of the Moderna COVID-19 vaccine are more likely to report side effects than those given the Johnson & Johnson or Pfizer-BioNTech shots, a study published Wednesday by JAMA Network Open found....Read More

Fast-food chain McDonald’s is targeting children in lower middle-income countries globally with marketing messages, an analysis published Tuesday by the journal BMJ Nutrition Prevention and Health found....Read More