HEALTH NOTES: Why teeth whitening is not healthy
HEALTH NOTES: Why teeth whitening is not healthy and should only be done by qualified dentists
Nearly half of people who undergo teeth whitening mistakenly believe it’s good for oral health, according to a survey.
The treatment, with bleaching gel, carries the risk of burning the gums, ulcers and increased sensitivity. For these reasons, only qualified dentists are allowed to perform the cosmetic treatment.
A survey of 2,000 Britons by Bupa Dental Care found that 40% of those who had whitening did so to improve their oral health. However, tooth color gives little indication of gum disease – the leading cause of tooth loss.
Nearly half of people who undergo teeth whitening mistakenly believe it’s good for oral health, survey finds
Don’t crush Covid fake news
Explaining why false claims made about Covid are false may not help change your mind, research shows.
Scientists from Dartmouth College in the United States have looked into fact-checking services set up by media organizations dedicated to countering misinformation and conspiracy theories propagated during the pandemic. They found that while these services can temporarily reduce misconceptions, they don’t permanently change people’s opinions.
Explaining why false claims made about Covid are false may not help change your mind, research finds
Researchers asked respondents in the UK and US about four claims about the pandemic – including one that a group funded by Microsoft founder Bill Gates patented the virus – and it was then explained to them why they were incorrect. They found those who had believed the claims, then changed their minds and reverted to their previous views within months.
More than two-fifths of NHS patients with suspected kidney cancer wait at least 84 days – almost three months – for a diagnosis, a study has found.
And according to research from the charity Kidney Cancer UK, more than 40% of kidney tumors have reached stage three or four by the time they are diagnosed, so patients are much less likely to survive.
This comes despite NHS promises that a cancer diagnosis would be offered within 28 days of the patient’s initial referral.
Nick Turkentine, from Kidney Cancer UK, said: “We hope the results of our latest patient reports will highlight the importance of early diagnosis, for both patients and healthcare professionals, so that survival rates are improving.”
Smoking in old age can damage the brain, scientists have found.
According to a study presented at the American Stroke Association conference, the more cigarettes people over 60 smoke, the worse they do on tests that measure memory, attention and word recognition. Nearly a quarter of the 3,000 participants smoked.
The author, Dr Neal Parikh, of Weill Cornell Medicine, New York, said: “Smoking is bad for brain health, even in people who don’t have other health problems usually linked to poor brain health. brain health.”