DR MICHAEL MOSLEY: Like many, I've long believed that our relentless use of social media is, for want of a better term, rotting our brains.

Evidence suggests the biggest risk factor for death by Covid-19 is age, but scores of pensioners are bucking the trend by managing to shake off the killer infection.

As a person ages, their immune system becomes suppressed and it takes longer for their body to recognise and attack the virus. Harvard scientists say this could be fixed by with NAD boosters.

DR ELLIE CANNON reveals how the oximeter, pictured, a simple tool available easily on the high street, can help catch Covid-19 before it turns deadly.

Charities in the UK have warned the killer infection can lead to acute kidney injury (AKI), a sudden serious condition that can be fatal if not treated immediately.

DR ELLIE CANNON: The Mail on Sunday's GP discusses B&Q reopening, pictured, how to obtain a free test, whether it's safe to hug grandchildren and more in this week's column.

EVE SIMMONS: Becoming infected with coronavirus undoubtedly tops the list of current health fears for most Britons. But getting fat seems to come a close second.

Dr Giorgio Gentile gave Leonard Whitehurst, being treated at Royal Cornwall Hospital, the drug tocilizumab as a last ditch attempt to save his life. He had heard promising results from early trials.

Gillian Assor (right), 50, who runs a nanny agency, lives in Hertfordshire, with her husband David, 51, and their children Benjamin, 23, Oliver, 21, and Isabel, 19. They came across Tommy (left).

Swiss drug maker Roche says its coronavirus antibody blood test has a specificity rate of 99.8% and a sensitivity of 100%, meaning it would show very few false positives and no false negatives

As many as 400,000 people a year in England and Wales are told they've reached the end of their treatment options, according to charity Marie Curie.

DR MARTIN SCURR: Any persistent problem can be terribly frustrating but it is not the Barrett's oesophagus (pictured) that is causing your symptoms.

New research has shown that our response to infection changes over the course of each day, and - even more importantly - that sleep disruption can leave our immune system compromised (file photo).

The malaria-blocking bug, Microsporidia MB, was found by University of Glasgow scientists in the gut and genitals of mosquitoes living on the shores of Lake Victoria in Kenya.

A walk in the park could cause hayfever sufferers to sneeze, even if the pollen count is low, a US-German study has found. Research on 25 men found even a simple smell could trigger hayfever symptoms.

Could gadgets - such as a prong for flushing loos and covers for keyboards - help too? ADRIAN MONTI asked experts to review a selection; we then rated them.

Researchers at the London School of Economics have highlighted exactly where the UK has fallen short of protecting some 400,000 care home residents and staff.

Scientific evidence suggests that people who are overweight - which two thirds of adults in the UK are - have a 39 per cent higher risk of dying if they catch the coronavirus.

British doctors want the matchbox-sized gadgets, known as pulse oximeters, to be given to those in most urgent need for free.

An urgent review has been launched by Health Secretary Matt Hancock into whether obesity, ethnicity and gender raise the risk of death from coronavirus.

Defra confirmed it is conferring with scientists about whether wastewater can help trace the spread of the deadly infection. It could become part of the government's plan to ease Britain out of lockdown.

Sir Patrick Vallance told MPs on the Health and Social Care Select Committee that masks could have a 'marginal but positive' impact on curbing transmission of the life-threatening infection.

An interactive map using data from the Office of National Statistics (ONS) has revealed hundreds of towns and villages which have avoided a single Covid-19 fatality during the pandemic.

Doctors say they're being inundated with calls about COVID toes, mysterious bruises, rashes and lesions on their feet, who don't have other traditional symptoms such as fever and coughing.

In the new survey, from PR firm Bospar, researchers found those between ages 18 and 24 were the least likely to get vaccinated against the coronavirus with only 57.8% saying they'd get the jab.

Researchers at Los Alamos National Laboratory have discovered a mutation to the coronavirus's spike protein that may make it more infectious - and it has spread around the globe.

British researchers modelled how the virus would spread in three scenarios - if Italy stayed in quarantine or if movement returned to pre-lockdown levels by 20% and 40% (shown in red).

Researchers from Edinburgh and London say the approach, dubbed 'segmentation and shielding', is the only way to get the UK back to normal without overwhelming the NHS.

The UK's death toll (29,427) surpassed Italy's (29,315) today, meaning it is the worst-hit nation on the continent. But, even now, Britain's borders remain open, making it a global outlier.

The president of the Hospital Consultants and Specialists Association said Britain's testing and tracing has been 'inadequate' and questions should be asked about the timing of lockdown.

Professor Lucy Yardley, from the University of Bristol, sounded the alarm today, saying evidence shows 'viral load' plays a big role in how sick someone will become.

Experts at Florida Atlantic University conducted an experiment using a mannequin and laser lights. Health officials recommend a safe distance of six feet (two metres).

A new study from the Mount Sinai Health System found that patients on blood thinners died after about 21 days in the hospital compared to those not on the drugs who died after about 14 days.

Some institutions have said that if their coronavirus vaccine trials go well, its jab could be available as early as Fall 2020, but most people would not be able to get it until Fall 2021.

Health officials are introducing a voluntary healthy lifestyle and exercise program for the town of Huntington, Long Island, which includes free nutrition advice and fitness classes.

A new survey from The Ohio State University Wexner Medical Center found that 80% said they would be concerned to go to a scheduled prenatal appointment amid the coronavirus pandemic.

GPs and councils in England were promised the results from hundreds of thousands of swabs carried out at drive-through centres after the UK shifted to 'pillar two' of its testing scheme.

The UK drug watchdog said there'd been a surge in bogus cleansing oils and sprays appearing online. It warned these products 'pose a risk to health' and could make COVID-19 infection worse.

Scientists in Glasgow trawled over data for more than 428,000 people who were part of the UK Biobank. Some 340 of those had recently tested positive for COVID-19 in hospital.

A new study from San Raffaele Hospital in Milan, Italy, found that 72% of 29 coronavirus patients given anakinra, an arthritis drug, had improved respiratory health and markers of inflammation.

SIR CLIVE WOODWARD: Eddie Jones faces some of the toughest decisions of his coaching career on Monday when he names his World Cup squad. He will never forget the calls he makes.

SIR CLIVE WOODWARD: England missed out on the scoreboard in Cardiff - and they missed a huge learning opportunity. What did they gain from the match? Not much. What did they learn? Not much.

SIR CLIVE WOODWARD: This was a real statement win from England and Twickenham was buzzing as the crowd realised they have a team who can cause real damage at the World Cup.

SIR CLIVE WOODWARD: So what can we expect in Japan? Well, for me it's an inspired choice and for all sorts of reasons. Japan knows how to organise major tournaments and this will be a triumph.

The Rugby World Cup is just round the corner and Sportsmail has everything you need to know. SIR CLIVE WOODWARD has the lowdown on every team in the tournament in Japan.

SIR CLIVE WOODWARD - WORLD CUP WINNING COACH: The World Cup is up and running and my only concern about England against Tonga is evidence of discipline.

SIR CLIVE WOODWARD: It is not often you get a full nineday lay-off in tournament rugby these days and using this period to optimum effect is important for Eddie Jones and England.

SIR CLIVE WOODWARD: We have often seen short-handed teams raise their game significantly, while those with a full complement can take their foot off the gas and struggle.

SIR CLIVE WOODWARD: Rugby World Cup has been very unlucky, nature can completely take over sometimes, but were their contingency plans robust enough to deal with it this weekend?

SIR CLIVE WOODWARD: Everything is coming to the boil nicely and sometime soon this England side is going to produce a performance for the ages. This Saturday would be the perfect time.