A boom in betting - both online and in shops - is fuelling addiction and debt among young people.
We speak to teenage gamblers, whistle-blowers, and campaigners who reveal how social media influencers and lack of regulation are driving a growing crisis in Nigeria.
If you are affected by harmful gambling or are suffering distress or despair you could speak to a health professional, or an organisation that offers support. Details of help available for despair in some countries can be found at Befrienders Worldwide (www.befrienders.org)
Produced and presented by Frey Lindsay
(Image: A close-up of a man's hands holding a mobile phone. Credit: Getty Images)