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.
