Online misinformation about polio has gone global after the detection of so called vaccine-derived poliovirus in London sewage. BBC health and science correspondent James Gallagher explains what’s really happening. And Claudia Hammond talks to Professor Beate Kampmann from the London School of Hygiene and Tropical Medicine who explains that while vaccine-derived polio virus has been reported in 24 countries since 2021 the vaccination programme has protected millions of people. Plus why looking after your body clock can be good for your health. Professor Russell Foster unpicks how our circadian rhythms can have an impact on the way our bodies deal with the food we eat, the exercise we do and medications we take.

Presenter: Claudia Hammond

(Picture: Someone using a mobile phone indoors. Photo credit: Charday Penn/Getty Images.)

New research reveals a poor immunity boost after infection with the Omicron variant. Might this explain why getting Covid again has been more common with this wave? BBC News health reporter, Smitha Mundasad unpicks the data. And the first World Health Organisation mental health report in two decades calls for change. Dévora Kestel, Director of WHO’s Mental Health and Substance Use Department joins Claudia Hammond to discuss the findings. Plus Professor Russell Foster on why looking after our body clocks can help with a good night's sleep.

Presenter: Claudia Hammond

(Picture: Covid-19 Omicron illustration. Photo credit: Sakchai Vongsasiripat/Getty Images.)

News about new next generation Covid vaccines that target specific variants is discussed with studio guest, Dr Ann Robinson. Professor Russell Foster talks to Claudia about the science of circadian rhythms and how taking more notice of our body clocks could help us live healthier lives. Plus anaesthetist Dr Niek Sperna Weiland explains why the inhaled gases used to put us to sleep during operations can be so damaging to the environment. And how our eyes are a window into the health of our hearts.

Presenter: Claudia Hammond

(Image: A healthcare worker prepares a dose of COVID-19 Vaccine. Image credit: Morsa Images / Getty Images)

Brain scans can reveal new ways to diagnose and potentially treat psychiatric, psychological and neurological conditions. But why has the promise been so slow to turn into reality? Claudia Hammond is joined by Sophie Scott, Director of the Institute of Cognitive Neuroscience and also by neuroscientist Scott Marek of Washington University in St Louis.

Plus one year on since fluoride toothpaste was added to the World Health Organisation's essential medicines list, Charles Mgbolu reports from Lagos about a market flooded with non-fluoridated toothpaste amid continued oral health concerns.

And shocking results showing a global shortage of 43 million medical staff are discussed with study lead author Professor Rafael-Lozano.

Plus studio guest family doctor Ann Robinson says there’s good news about new evidence for treating Crohn’s disease.

Presenter: Claudia Hammond

(Picture: A patient in MRI scanner with a nurse explaining the scan. Photo credit: ER Productions Limited/Getty Images.)

Claudia discusses concerns about monkeypox misinformation and stigma with Andy Seale, Senior Strategic Advisor, department of HIV, hepatitis and sexually transmitted infections at the World Health Organisation.

How psychologists are trialling a radio drama for tackling external and domestic insurgent attacks in Burkina Faso. Associate Professor Rezarta Bilali explains why the drama was needed.

Plus Claudia hears of a new study on whether growing up in a city, town or countryside might impact our navigation skills, and visits the Chelsea Flower Show in London to examine the evidence for how much of an effect gardening might have on a person’s mental health.

Presenter: Claudia Hammond

(Picture: Monkeypox virus. Photo credit: Kontekbrothers/Getty Images.)

Monkeypox is spreading in more than 20 countries where previously it has not been seen, but BBC Health reporter Smitha Mundasad explains that this is not a new disease.

Presenter Claudia Hammond hears of an outbreak of a more serious strain in an area of the Democratic Republic of Congo that has no experience of Monkeypox. Professor Wim van Damme got in touch about his research trip to Maniema, a rural DRC province with more than 500 cases and 50 deaths. Plus, professor of virology Penny Moore discusses Covid variants in South Africa. Might waves of the virus be more predictable as surges appear to be settling into a six-monthly pattern? And a helpful new study on creams for childhood eczema.

Presenter: Claudia Hammond

Photo copyright: Professor Wim van Damme

Reports from North Korea have suggested a scarcity of data on healthcare provision but Claudia hears from Professor Hazel Smith who has researched North Korea for over thirty years that there is good information about health services.

And do doctors have a professional duty to be kind? The General Medical Council in the UK are consulting on whether to require doctors to ‘treat patients with kindness’ and some have not taken kindly to the idea. Louella Vaughan, a hospital consultant in acute medicine and family doctor Ann Robinson debate the issues.

Plus Claudia’s studio guest today is Graham Easton, Professor of Clinical Communication skills at Queen Mary, University of London.

Presenter: Claudia Hammond

(Picture: Pedestrians walk past cherry blossom trees near the Arch of Triumph in Pyongyang in April 2022. Photo credit: Kim Won Jin/AFP/Getty Images.)

Brand new results of a fourth Covid booster trial, with a mix and match approach including half doses, reveals good news for global vaccine rollout. BBC Health and Science correspondent James Gallagher explains.

Plus evidence from Ohio where Professor Ihuoma Eneli's new paper shows how weight gain increased markedly in low-income US children and teenagers during early Covid-19.

And the science of dreams, Claudia Hammond speaks to Brazilian neuroscientist Sidarta Ribeiro about his new wide ranging book The Oracle of Night.

Presenter: Claudia Hammond

(Picture: A patient who has received a fourth Covid-19 vaccination in Rieti, Italy. Photo credit: Riccardo Fabi/NurPhoto/Getty Images.)

Claudia is joined by Matt Fox, Professor of Global Health at Boston University to discuss evidence investigating a hybrid combination of Covid vaccines and prior infection.

Dr Vineet Arora explains how best to support health care workers who have received online attacks for trying to correct inaccurate information during the Pandemic.

And advice for parents on how to cope when their children are having mental health problems from authors Roz Shafran, Alice Welham and Ursula Saunders.

Presenter: Claudia Hammond

(Picture: Illustration of antibodies responding to a coronavirus infection. Photo credit: Juan Gaertner/Science Photo Library/Getty Images.)

Update on the latest global research into Covid-19 with BBC Health Reporter Smitha Mundasad and Claudia talks to the authors of a new study charting brain development over the human life span. Could this be a useful tool to understanding how the brain varies over populations and over time and what are the ethical questions involved?

Plus if you carry excess weight, what difference does it make to your health if those extra kgs are round your waist or hips?

Presenter: Claudia Hammond

(Picture: Neurologists working with CT brain scan images in a laboratory. Photo credit: Gorodenkoff/Getty Images.)