All the issues covered in the ninth series.
There are many places around the world where people drink hot drinks to stay cool.
How much do you really have to do, and how vigorously do you need to do it?
10 million people in the UK have a phobia, a fear so intense that it becomes debilitating.
Prolonged nausea or sickness could be a sign of a condition called hyperemesis gravidarum.
Could a natural sensation known as ASMR or 'brain tingles' help us beat stress?
Can intermittent fasting improve your memory and possibly even cause neurogenesis?
Pioneering new surgical treatment to save the sight of glaucoma patients.
Lab tests to find out what cannabis-derived health products really contain
How to spot symptoms of ICP and reduce the risk to mothers and unborn babies.
An experiment to test whether the food you eat can improve your mental wellbeing
Finding out the most effective and supportive method to calm a crying baby.
What is psoriasis, how can it be managed, and what new treatments are available?
How do you make sure your dishes are germ-free? Hot water or cool? Air drying or towel?
New technology that may in future give an early warning of dementia.
We test whether spending more time in nature improves your physical and mental health.
What is PANDAS, how to spot the symptoms in a child, and what treatment to expect.
The latest science on 'brown fat', a type of body fat that can help burn more calories.
Comparing the nutritional content of dairy milk and popular plant-based alternatives.
The new surgical tool that could soon help surgeons remove tumours
We test the effects of gentle yoga on blood pressure and mental health
We put Alain Gregoire on an all-Huel diet and test the effect on his health
We discover the hidden dangers of your contact lenses being exposed to water
New trial showing the benefits of dance for Parkinson's and other degenerative illnesses.
We test whether eating 'mindfully' can help us eat less
Testing whether music - with and without lyrics - can help you get a good night's sleep
A British family takes on the 'planetary diet' for a week
Giles explores the evidence for treatments that claim to make your skin look younger
A condition that many have never heard of, it can affect up to 1 in 10 women in the UK