Days after grabbing headlines with its COVID-19 “vaccine for the world”, AstraZeneca is facing tricky questions about its success rate that some experts say could hinder its chances of getting speedy US and EU regulatory approval.
Questions over AstraZeneca's COVID-19 vaccine data risk delaying approval
Frequent, short exercise sessions may be better for diabetes patients' blood vessels than longer and fewer workouts, and that may reduce their risk of heart disease, according to a new study.
Quick bursts of exercise can help diabetics' hearts
Iran registered on Wednesday a daily record high of 13,843 new coronavirus cases, the Health Ministry said, pushing the national tally to 894,385 in the country.
Iran records highest daily coronavirus infections
Infants' brains may be shaped by levels of stress their mother experiences during pregnancy, a study has revealed.
Stress in pregnancy may influence baby brain development
Even with regular physical activity, older women (ages 50-79) who spend more waking hours in sedentary behaviors, such as sitting or lying down, have an increased risk of heart failure serious enough to require hospitalization, according to new research published in Circulation: Heart Failure.
Less sedentary time reduces heart failure risk for older women: Reseach
A week after extremely promising news about two US vaccines, developers of Russia's Sputnik V COVID-19 vaccine said it has shown an efficacy rate better than 91%.
Russia says COVID-19 vaccine showing to be 91% to 95% effective
The hormone lipocalin-2, found naturally in humans and mice, could potentially treat obesity, a new study found.
Hormone that switches off hunger may help treat obesity, study says
Using blood plasma from COVID-19 survivors to treat patients with severe pneumonia caused by the novel coronavirus showed little benefit, according to data released from a clinical trial in Argentina.
Plasma from recovered patients shows little benefit in those hospitalized with COVID-19: Study
A spectacular three-meter-wide painting of the astronomer Copernicus is to be shown in the UK for the first time, to showcase a superstar 19th-century artist little known outside his native country.
Huge portrait of Copernicus to be seen in UK for first time

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