Are humans the best healers? There are now hundreds of AI chatbots designed to help with mental health. Are they a good idea?
Therapy chatbot gets 78 million messages

Glossary
Therapist - A person who helps someone with emotional or physical difficulties, often through talking to them.
AI - A computer programme that has been designed to think.
chatbot - A chatbot is a computer programme that simulates human conversation or "chatter" through text or voice interactions.
Psychology - The scientific study of the mind and behaviour.
NHS - The National Health Service, the publicly funded healthcare system in the UK. The NHS was founded in 1948.
Experts - Someone who knows a lot about a particular subject.