Cannabidiol or CBD oil has had a recent surge in popularity but is there any evidence for it having any health benefits? Dr Margaret McCartney reviews the research. Mark visits the Dental psychology service at Guy's Hospital in London and talks to Tim Newton about dental phobia, the treatment available and how successful it is at treating a phobia which affects 1 in 10 people in the UK. Also what causes gout and why has advice changed on the best way to treat it? Mark talks to rheumatologist, Dr Tim Tait at United Lincolnshire hospitals.

Research suggests opioids don't work in long-term chronic pain but dispensing in the UK has risen four-fold since the nineties, and we consume more than any other country in Europe. There is a dearth of good evidence for how best to help people come off these drugs. Mark Porter meets the team trying to change that. And an objective pitch-side test that takes the guesswork out of diagnosing concussion.

Regulation of Home Fetal Heart Monitors prompted by concerns that the burgeoning use of these devices could be harmful. Deconditioning - there is a popular adage that spending 10 days in hospital can age people 10 years, but is this backed by evidence and could it actually be worse? Mark Porter visits Warwick Hospital to meet the team working to combat deconditioning in the elderly. Plus the Alcohol Harm Paradox - why do less affluent drinkers tend to develop more problems than their better off peers even if they drink exactly the same amount.

Dr Mark Porter investigates the digitisation of the NHS: are online, asynchronous GP consultations the future? He visits a GP surgery in Tower Hamlets to find out how patients are getting in touch online, in their own time. Does it help improve access for patients and manage workload for busy GPs? Manu Vatish, an obstetrician from the University of Oxford, explains that currently every pregnant woman will be tested for pre eclampsia and how a new test could help accurately identify the 4% of women who actually get the condition.And could aspirin help in the treatment of cancer? Mark talks to Professor Peter Elwood from Cardiff University about his recent study into the evidence and to Professor Janusz Jankowski, a gastroenterologist at Morecambe Bay hospital to talk about the implications and risk and benefits.

A new handheld device for migraine is being pioneered at Guys and St Thomas's Hospital in London. Using single pulses of transcranial magnetic stimulation the device is helping prevent and treat migraines in people who haven't responded well to other treatments. Dr Anna Andreou, director of headache research, and nurse specialist, Bethany Hill talk Mark through how it works. Some people, particular of North European and Irish ancestry have the faulty genes that mean they are unable to get rid of excess iron in the body. This can lead to symptoms ranging from tiredness, joint pain, and diabetes to skin discolouring and liver disease. New research has shown the condition is far more common than has been previously thought and is often missed as a diagnosis. Haematologist at Gartnavel Hospital in Glasgow, Ted Fitzsimons and epidemiologist, David Melzer of the University of Exeter, talk testing and treatment for iron overload, or haemochromatosis.Cancer is an umbrella term which covers a spectrum of disease. Some cancers, like lung cancer grow and spread rapidly. But others like some forms of breast, thyroid and prostate cancer have a less than 5% chance of progressing over twenty years. So should we redefine low risk cancers? GP Margaret McCartney and consultant histopathologist, Murali Varma of University Hospital of Wales in Cardiff discuss this question.

Genetics and confidentiality; a fascinating legal case where a woman is suing the hospital trust that looked after her father with Huntington's disease for not warning that she too could be affected. And a well established use of very low carb diets that isn't so well known - to treat complex childhood epilepsy. Plus cancer of the voice box and persistent sore throat. And should hairy arms be shaved for a hospital drip? This question has prompted a transatlantic spat when Sir Andy Murray posted a photograph after his recent hip operation.

Warnings that expensive, unproven 'add-ons' are being offered by IVF clinics ; Keen jogger Margaret McCartney asks whether rest helps running problems such as stitch, shin splints and plantar fasciitis. Plus DNA testing on the NHS to anyone prepared to pay for it with the results contributing to research. But what exactly is the aim of such testing and are there hidden implications?

Concerns about conflict of Interest and reputational damage. Should policy making organisations in the public health arena form partnerships with charities funded by industry? And living with a Stoma. Mark goes to Addenbrookes hospital in Cambridge to meet Michael, who explains what life is like after having his large colon removed. 1 in 500 people in the UK - children and adults - live with some form of bowel stoma, where part of their gut has been brought out through their abdominal wall to empty into a bag. But how does it all work, and what it’s like living with one? Plus Margaret McCartney on diet books and why they are rarely discussed on Inside Health.

An unprecedented number of medicines are in short supply, according to NHS England. Doctors, pharmacists and patients all over the UK are finding common drugs like naproxen are more difficult to get hold of. Why is there such a problem with supply of medicines that are normally cheap and easy to get hold of? And why a 'severe shortage protocol' due in the next few weeks should give pharmacists more power help ease the situation. Mark talks to Ash Soni, president of the Royal Pharmaceutical Society and pharmacist, Ben Merriman to find out more. The number of children with short-sightedness, myopia has doubled in the last 50 years. Mark finds out why atropine eye drops, which are widely used in China and Singapore, are being trialled on children in the UK to help prevent the progression of myopia. Professor Augusto Azuara-Blanco from Queens University Belfast explains. And is muscle more dense than fat? Jason Gill, professor of cardio metabolic health at the University of Glasgow discusses how even a small amount of fat loss can have hugely significant health benefits. Elaine Dennison, professor of Musculoskeletal Epidemiology at the University of Southampton explains why muscle is an under researched part of the body and how we lose muscle mass and strength in middle age and what we can do to prevent it.

Dr Mark Porter discusses High Blood Pressure , a silent threat that isn’t well managed, with only a third of those affected being diagnosed and treated as advised in the latest guidelines. Dr Margaret McCartney and Professor of Medicine, Bryan Williams help unpick areas of confusion including lifestyle and treatment with the latest thinking in the UK, on who should be offered what and when.