Gwyneth Paltrow adopted a super-healthy macrobiotic lifestyle in the hope it would encourage her father to eat better - and beat cancer.
The Emma actress accepts it may have been a naive notion, but when her late dad Bruce was diagnosed with throat cancer in 1998, she really thought a better diet and alternative medicine would help keep him alive.
She then became the poster woman for raw and macrobiotic food - something she gave up when she first became a mum.
The actress, who has just released a healthy food cookbook dedicated to her dad, says, "I was convinced he could heal himself with good foods and alternative medicine, even if he was resistant to the perhaps naive idea.
"I read everything that linked pesticides, growth hormones and preservatives to cancer. I enlisted a macrobiotic counsellor, who said she had healed herself from cancer by eating this way, and I brought in a chef to get us started.
"Still, I was dealing with a man who upon hearing his cancer diagnosis went out for hot dogs and after an excruciating throat surgery wanted to go straight to eat at (Hollywood restaurant) Mr. Chow. He never embraced the idea of cutting anything out."
But Paltrow insists the research she did wasn't wasted - it made her think carefully about the food she ate.
She tells health magazine Self, "All the information I gathered made an impact on me. In a bid to heal my father by proxy, I went strictly organic, local and macro and eliminated dairy, sugar, meat, liquor and gluten... although sometimes I wanted a slice of cake or a martini with olives."