Can you eat yourself happy? Michael Mosley tests whether our diet can affect our mental health. Guddi Singh finds out the best way to calm a crying baby. Alain Gregoire uncovers the future tech that could tell us if we are developing dementia. Zoe Williams reveals a new treatment for psoriasis – a skin condition that affects over a million of us. And Michael tests how best to keep your dishes bug-free when you do the washing up.

Michael Mosley tests whether yoga can lower your blood pressure as much as a workout, and Alain Gregoire tests meal replacement shakes to see if they are as healthy as they claim. Meanwhile, Zoe Williams discovers why wearing your contact lenses in the shower damage your eyesight, and Giles Yeo tests whether gourmet salts are any healthier than table salt.