HomeHealthThis could be why your hair is turning gray – and other...

This could be why your hair is turning gray – and other health stories you may have missed

It’s been a busy week — from lab leak theories at a hearing on the origins of COVID-19 to the Supreme Court’s long-awaited decision on access to the abortion pill mifepristone. But that’s not the only thing happening in healthcare. Here are some interesting updates you may have missed, as reported by Yahoo News partners.

A new study could explain why your hair turns gray as you age

Hair coloring stem cells

Hair coloring stem cells. (Courtesy of Springer-Nature Publishing or Nature magazine)

A study published Wednesday may have provided an answer to the question of why our hair turns gray as we age, Yahoo News partner CBS News reported.

Researchers from the NYU Grossman School of Medicine studied melanocyte stem cells in mice – a cell type also found in humans – and found that these cells can eventually become ‘stuck’ as one ages, eventually losing the ability to move between growth compartments. to move the hair. particles and produce the pigment that provides hair color.

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If this result applies to humans, researchers hope it could lead to the discovery of a way to prevent hair from losing its youthful hue.

“The newly discovered mechanisms raise the possibility that the same fixed positioning of melanocyte stem cells could also exist in humans,” said Qi Sun, the study’s lead researcher, in a press release. “If so, this offers a potential path to reverse or prevent the graying of human hair by helping stalled cells move back between developing hair follicle compartments.”

A UNICEF report shows that 12.7 million children in Africa have missed vaccinations

A community health worker administers an oral polio vaccine during a door-to-door polio immunization campaignA community health worker administers an oral polio vaccine during a door-to-door polio immunization campaign

A community health worker administers an oral polio vaccine during a door-to-door polio immunization campaign. (Ericky Boniphace/AFP via Getty Images)

A new report released Thursday by UNICEF shows that 12.7 million children in Africa missed one or more vaccinations between 2019 and 2021 thanks to disruptions caused by the COVID-19 pandemic, creating a ‘child survival crisis’ on the continent , Yahoo News partner the Canadian Press reported that UNICEF blamed “intense demands on health care systems, the shift from immunizers to COVID-19 vaccination, health worker shortages and stay-at-home measures,” as well as conflict, climate change and vaccine hesitancy to the decline in vaccination that now leaves the continent more vulnerable to serious diseases. Last year, 34 of Africa’s 54 countries experienced outbreaks of measles, cholera and poliovirus. Africa needs to vaccinate about 33 million children by 2025 to recover from the “disruptive wake” of COVID-19, according to the World Health Organization.

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Vaccination rates were also hit in other countries around the world. The report shows that around 67 million children have missed routine vaccinations, with vaccination rates falling in 112 countries. Vaccine skepticism also rose during this period, including in South Korea, Japan, Papua New Guinea and Ghana, where confidence fell by more than a third.

Top athletes live longer than the general public, research shows

A new study shows that the longevity of elite female athletes across all sports has increased by 22%.  (Getty Images)A new study shows that the longevity of elite female athletes across all sports has increased by 22%.  (Getty Images)

A new study shows that the longevity of elite female athletes across all sports has increased by 22%. (Getty Images)

Research published on Wednesday by the International Longevity Center UK (ILC) shows that elite athletes can live up to five years longer than the rest of us, Yahoo News partner the Evening Standard reported.

Researchers looked at data from competitors at the Commonwealth Games since 1930 and found significant differences in the longevity of medalists versus the longevity of people in the general population born in the same year.

“We have long known that exercise has a variety of health benefits, but our research shows the significant impact elite sport can have on the longevity of athletes around the world,” said Professor Les Mayhew, associate head of global research at the ILC.

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Men’s lifespan was increased by 29% in aquatic sports, 25% in athletics and 24% in indoor sports, which researchers say translates into between 4.5 and 5.3 additional years of life. Women’s lifespan has increased by 22% or 3.9 years across all sports.

Some other interesting findings the researchers noted: wrestlers live longer than boxers; The lifespan of long-distance runners is marginally higher than that of short-distance runners; and cycling was the only sport not associated with a longer life.

New study links sugary drinks to early death in certain people

Sugary soft drinksSugary soft drinks

Many soft drinks are packed with sugar. (Getty Images)

According to a study published Wednesday by the Harvard TH Chan School of Public Health, high consumption of sugar-sweetened beverages such as soda, fruit punch and lemonade was associated with an increased risk of premature death and cardiovascular disease in people with type 2 -diabetes. , Yahoo News partner USA Today reports this.

The study authors say the report, which includes data from 1980 to 2018, is one of the first large-scale studies to examine the links between death or illness and drinking among people with type 2 diabetes.

“Drinks are an important part of our diet, and the quality can vary enormously,” said lead author Qi Sun in a press release. “People with diabetes may especially benefit from drinking healthy drinks – but data is scarce. These findings help fill that knowledge gap and can inform patients and their healthcare providers about diet and diabetes management.”

The study found that replacing one sugar-sweetened beverage per day with an artificially sweetened beverage was also associated with an 8% lower risk of “all-cause mortality” and a 15% lower risk of cardiovascular disease mortality; replacing a sugary drink with an unsweetened drink such as coffee, tea, water or low-fat cow’s milk was associated with even greater health benefits.

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