https://www.cdc.gov/coronavirus/2019-ncov/science/science-briefs/masking-science-sars-cov2.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Fmore%2Fmasking-science-sars-cov2.html, posted 6 Apr by peter in health science
Experimental and epidemiological data support community masking to reduce the spread of SARS-CoV-2. The prevention benefit of masking is derived from the combination of source control and personal protection for the mask wearer. The relationship between source control and personal protection is likely complementary and possibly synergistic14, so that individual benefit increases with increasing community mask use. Further research is needed to expand the evidence base for the protective effect of cloth masks and in particular to identify the combinations of materials that maximize both their blocking and filtering effectiveness, as well as fit, comfort, durability, and consumer appeal. Adopting universal masking policies can help avert future lockdowns, especially if combined with other non-pharmaceutical interventions such as social distancing, hand hygiene, and adequate ventilation.
Any book of Why We Sleep's length is bound to contain some factual errors. Therefore, to avoid potential concerns about cherry-picking the few inaccuracies scattered throughout, in this essay, I'm going to highlight the five most egregious scientific and factual errors Walker makes in Chapter 1 of the book. This chapter contains 10 pages and constitutes less than 4% of the book by the total word count.
https://stanfordpress.typepad.com/blog/2018/05/why-cavemen-needed-no-braces.html, posted 2 Mar by peter in food health science
At its root, the problem we face is that we have entered a space age world with Stone Age genes – genes that evolved to produce jaws adapted to a hunter-gatherer diet. Today's jaws epidemic is concealed behind the commonplace. Its most obvious symptoms are oral and facial: crooked teeth (and the accompanying very common use of braces), receding jaws, a smile that shows lots of gums, mouth breathing, and interrupted breathing during sleep. A bother, but hardly an 'epidemic' – at least until one recognizes the relationship between malocclusion and a veritable host of downstream health consequences.
Stringfoot is a term used to describe pigeons whose feet have become entangled with foreign matter, whether actual string, thread, monofilament, real or artificial human hair (most common), dental floss, yarn, or the many other materials discarded by the human population of cities.
Whether adult birds or chicks, these foreign materials wrapped around their feet or legs — and sometimes binding their feet together — results in pain, infection, loss of digits or entire feet, and the subsequent inability to walk, stand, perch, land, feed or bathe properly, sometimes leading to illness or death...
Which are the best supplements to take to enhance your health and wellbeing? We visualised all evidence for all health supplements in one chart. Now regularly updated with revitalising boosts of fresh data.
On a continent famous for its welfare systems, school closures threaten to widen divisions of education, ethnicity and class. Compared with the rest of the world, Europe has not done badly during the pandemic. Most of its schools reopened in the autumn, while in South America and South Asia they largely stayed shut. But covid-19’s second wave has forced many European schools to close again.
This hurts all pupils, but it hits the poor and vulnerable ones harder. France’s education ministry says that last spring’s lockdown increased the gap in exam scores between normal schools and ones in hard-up areas by several points. In Germany, that first lockdown cut studying time from 7.4 hours per day to 3.6. An analysis of last year’s national exam results in the Netherlands came up with the depressing finding that during the spring lockdown the average pupil had learned nothing at all. Those whose parents were poorly educated did even worse: they emerged from their first two months of schooling by internet knowing less than when they started.
Pick a muscle, get suggestions for exercises that address that particular muscle.
The disease poses a grave and fast-moving threat to every nation. Governments have, quite reasonably, assumed emergency powers to counter it. But such powers can be abused. Governments have selectively banned protests on the grounds that they might spread the virus, silenced critics and scapegoated minorities. They have used emergency measures to harass dissidents. And they have taken advantage of a general atmosphere of alarm. With everyone’s attention on covid-19, autocrats and would-be autocrats in many countries can do all sorts of bad things, safe in the knowledge that the rest of the world will barely notice, let alone to object.
https://www3.nhk.or.jp/news/easy/k10012661241000/k10012661241000.html, posted Oct '20 by peter in health injapanese science
(A group of researchers found the risk of coronavirus spreading among people sitting together eating was five times higher when they were seated next to each other, compared to when they were sitting opposite.)
https://fof.se/tidning/2020/8/artikel/bli-stark-for-livet, posted Aug '20 by peter in health inswedish science
Styrketräning kan förlänga livet och minska risken för hjärt- och kärlsjukdomar, diabetes och cancer. Även minnet förbättras. Ändå har styrketräning hamnat i bakvattnet av konditionsträning. Är det dags för en förändring?