• Public health nurse Kathy Luu administers a dose of the Moderna Covid-19 vaccine to a staff member at the Ararat Nursing Facility in the Mission Hills neighbourhood of Los Angeles, California. AFP
    Public health nurse Kathy Luu administers a dose of the Moderna Covid-19 vaccine to a staff member at the Ararat Nursing Facility in the Mission Hills neighbourhood of Los Angeles, California. AFP
  • A healthcare worker tests for Covid-19, in Buenos Aires, Argentina. AP Photo
    A healthcare worker tests for Covid-19, in Buenos Aires, Argentina. AP Photo
  • A nurse wears a badge reading "I get vaccinated, I protect you" at the Cavale Blanche hospital in Brest, western France during a vaccination operation of the medical staff against the Covid-19 disease. AFP
    A nurse wears a badge reading "I get vaccinated, I protect you" at the Cavale Blanche hospital in Brest, western France during a vaccination operation of the medical staff against the Covid-19 disease. AFP
  • A worker installs equipment in a temporary Covid-19 testing laboratory built on an indoor tennis court in Shijiazhuang in northern China's Hebei Province. Xinhua via AP
    A worker installs equipment in a temporary Covid-19 testing laboratory built on an indoor tennis court in Shijiazhuang in northern China's Hebei Province. Xinhua via AP
  • Volunteer and medical student Tereza Zalesakova treats a Covid-19 patient in an intensive care unit at Prague's General University Hospital. AFP
    Volunteer and medical student Tereza Zalesakova treats a Covid-19 patient in an intensive care unit at Prague's General University Hospital. AFP
  • Candles and flowers are placed by a relative on the grave of Joao Marinho, 76, who passed away due to Covid-19 at the Parque Taruma cemetery in Manaus, Brazil. Reuters
    Candles and flowers are placed by a relative on the grave of Joao Marinho, 76, who passed away due to Covid-19 at the Parque Taruma cemetery in Manaus, Brazil. Reuters
  • A church worker carries a placard reminding mass-goers to maintain physical distancing outside Quiapo Church in Manila, Philippines. Reuters
    A church worker carries a placard reminding mass-goers to maintain physical distancing outside Quiapo Church in Manila, Philippines. Reuters
  • A waiter picks up a sweet takeaway at a bakery in the Gothic Quartier in Barcelona, Spain. Reuters
    A waiter picks up a sweet takeaway at a bakery in the Gothic Quartier in Barcelona, Spain. Reuters
  • A woman walka back home from work in Spruitview near Johannesburg, South Africa. AP Photo
    A woman walka back home from work in Spruitview near Johannesburg, South Africa. AP Photo
  • A man transports children on his tricycle, in Havana, Cuba. AP Photo
    A man transports children on his tricycle, in Havana, Cuba. AP Photo
  • An empty main road seen during a complete closure amid the ongoing Covid-19 coronavirus pandemic in Gaza City. EPA
    An empty main road seen during a complete closure amid the ongoing Covid-19 coronavirus pandemic in Gaza City. EPA
  • US President-elect Joe Biden removes his mask as he announces members of economics and jobs team at his transition headquarters in Wilmington, Delaware, US. Reuters
    US President-elect Joe Biden removes his mask as he announces members of economics and jobs team at his transition headquarters in Wilmington, Delaware, US. Reuters

Coronavirus latest: Tests and quarantine as UK hits new record for deaths


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Coffee: black death or elixir of life?

It is among the greatest health debates of our time; splashed across newspapers with contradicting headlines - is coffee good for you or not?

Depending on what you read, it is either a cancer-causing, sleep-depriving, stomach ulcer-inducing black death or the secret to long life, cutting the chance of stroke, diabetes and cancer.

The latest research - a study of 8,412 people across the UK who each underwent an MRI heart scan - is intended to put to bed (caffeine allowing) conflicting reports of the pros and cons of consumption.

The study, funded by the British Heart Foundation, contradicted previous findings that it stiffens arteries, putting pressure on the heart and increasing the likelihood of a heart attack or stroke, leading to warnings to cut down.

Numerous studies have recognised the benefits of coffee in cutting oral and esophageal cancer, the risk of a stroke and cirrhosis of the liver. 

The benefits are often linked to biologically active compounds including caffeine, flavonoids, lignans, and other polyphenols, which benefit the body. These and othetr coffee compounds regulate genes involved in DNA repair, have anti-inflammatory properties and are associated with lower risk of insulin resistance, which is linked to type-2 diabetes.

But as doctors warn, too much of anything is inadvisable. The British Heart Foundation found the heaviest coffee drinkers in the study were most likely to be men who smoked and drank alcohol regularly.

Excessive amounts of coffee also unsettle the stomach causing or contributing to stomach ulcers. It also stains the teeth over time, hampers absorption of minerals and vitamins like zinc and iron.

It also raises blood pressure, which is largely problematic for people with existing conditions.

So the heaviest drinkers of the black stuff - some in the study had up to 25 cups per day - may want to rein it in.

Rory Reynolds

The Kingfisher Secret
Anonymous, Penguin Books

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