Lena Headey wants to start the conversation about mental health

Speaking on Running Wild with Bear Grylls, she said: "There are certain things that are cool to talk about, and there are certain things that no one wants to talk about. I just feel if you don’t share and you don’t connect, you’re just causing more isolation, and that’s a really bad thing for all of us. I’ve learnt just to sit with it, anything that feels uncomfortable.

"I saw a doctor for the medical check, and I just burst into tears. She said I was postnatally depressed and I went, ‘Am I? Why is that?’ I saw a great guy and he sorted me out, but I did the first year [on 'Game of Thrones'] in that space, figuring out motherhood and going through a weird time personally. It was tricky."

Lena had previously revealed she was diagnosed with "horrendous" postnatal depression when she joined 'Game of Thrones'.

She explained: "[Filming was] really horrendous - I was postnatally depressed but I didn't know it. I saw a doctor for the medical check, and I just burst into tears. She said I was postnatally depressed and I went, 'Am I? Why is that?' I saw a great guy and he sorted me out, but I did the first year [on 'Game of Thrones'] in that space, figuring out motherhood and going through a weird time personally. It was tricky."