Olivia Munn, 43, reveals breast cancer treatment has put her into medically ... trends now

Olivia Munn has laid bare the harrowing ordeal of undergoing four surgeries, including a double mastectomy, during her battle with breast cancer - which has put her into medically induced menopause. 

The 43-year-old was diagnosed roughly a year ago and had all four operations in the space of 10 months, driving the illness into remission.

In order to reduce the risk of recurrence, she then started hormone suppression therapy that caused her to begin going through menopause.

'I’m constantly thinking it’s hot, my hair is thinning, and I’m tired a lot,' said the The Newsroom actress in a cover interview for People. 

She added that her cancer diagnosis was 'much more terrifying' because she was caring for her son Malcolm, two, whom she shares with her boyfriend John Mulaney.

Malcolm was just one year old when Olivia discovered she had cancer, though she did not go public with the news until this March. 

Olivia's cancer battle began last year with an astonishing diagnosis - just three months after she had a mammogram that indicated she was healthy. 

Her surprise was compounded by the fact that had gotten a negative test for a cancer gene mutation not long beforehand.

She 'did all the tests that I knew about' and as a result was 'walking around thinking I had no breast cancer' shortly before she was diagnosed.

When she received news that she had cancer in both breasts, she 'was not someone who obsessed over death or was afraid of it in any way' but confessed that 'having a little baby at home made everything much more terrifying.'

Olivia, who was about to start shooting a film at the time, realized 'cancer doesn’t care who you are; it doesn’t care if you have a baby or if you don’t have time. It comes at you, and you have no choice but to face it head-on.'

Although having little Malcolm at home made the initial news scarier, the task of taking care of him helped Olivia cope with her treatment.

'When I’m with him, it’s the only time my brain doesn’t think about being sick. I’m just so happy with him,' she explained.