The 43-year-old Iron Man star, who founded lifestyle newsletter Goop in 2008, lost her director father Bruce Paltrow in 2002, when he died at the age of 52 after battling oral cancer for years.
And the impact of her dad's death, as well as other members of her family who have also succumbed to the disease, continues to play out in her mind as she explores new avenues for health and wellness.
"I've always been cutting the path in the exploration of how to live a long, healthy life," she explains to New York Magazine's The Cut. "Unfortunately, when you lose a parent to cancer (and I had lost a cousin when I was very young) - you want to stave off illness, you want to embrace life and prolong your life. I've come from that place for a long time, because I've had illness in my family."
This primary motivation means Gwyneth is courageous when looking into pioneering wellness opportunities to enhance her wellbeing.
"I've always been interested in alternative ways of achieving this elusive wellness," she adds. "I've been very experimental and I've tried all kinds of modalities, diets, and juices. I kind of like being the guinea pig for it all."
Paltrow is often dubbed bizarre by others as she explores alternative healing methods, noting, "I remember when I started doing yoga 20 years ago, and people thought I was super weird and didn't know what I was doing. It's the same way with organic food or acupuncture. I was always the one saying, 'Hey, this is cool," and people being like, 'You're super weird.' And now, yoga is (hugely popular)."
Gwyneth's latest wellness obsession is vaginal steaming, also known as the v-steam, a procedure in which clients squat over a steaming pot of water and herbs to rid their private lady parts of toxins.
"The first time I tried v-steaming, I was like, 'This is insane'," she confesses. 'My friend Ben brought me and I was like, 'You are out of your f**king mind. What is this?' But then by the end of it I was like, 'This is so great.' Then I start to do research, and it's been in Korean medicine for thousands of years and there are real healing properties."
The actress previously cooed about vaginal steaming in her Goop newsletter last year.
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