The journal JAMA today publishes several articles, along with an editorial, in which the US Preventive Services Task Force recommends against the use of vitamin supplements to prevent cancers and cardiovascular disease.
"The level of alcohol consumption that does not harm health is zero," says a review of dozens of studies conducted in recent years on the effect of light drinking. The 20 or so authors of the paper, and other experts, insist that "alcohol is carcinogenic from the first drink". In their view, this message should be conveyed more clearly to the public.
A paper published today in the journal Circulation concludes that acute myocarditis is a rare complication in patients hospitalised with covid-19 and that the severity of its prognosis depends on the simultaneous presence of pneumonia.
A study published in the BMJ concludes that covid-19 is a risk factor for developing venous thrombosis, pulmonary embolism and haemorrhage.
E-cigarettes and smokeless tobacco are alternatives to traditional tobacco that have grown in popularity in recent years. Proponents claim that they serve to "reduce harm" and help quit smoking, while opponents claim that there is no evidence of benefit and that they can introduce young people, non-smokers and ex-smokers to tobacco.