ACTRESS Cameron Diaz has said her new health book addresses issues faced by young women in today's society -- including the need to 'embrace your hunger'.
The Hollywood star -- who is well known for her own healthy lifestyle -- has written The Body Book, offering information and advice on fitness, health and well-being.
Diaz said she decided to write the book two years ago after realising "nobody else was going to do it".
"I had to find a way to share the knowledge that I have about my body at 41 -- and wish I'd had at 21," she said.
The Charlie's Angels star, who started off as a model before shooting to fame in The Mask in 1994, has long been open about suffering from acne as a youngster.
"I wrote the book for my 16-year-old self, who I look back on and think, "Why didn't I know these things then?'," she said.
The book deals with a number of intimate topics, including subjects that the actress has talked about frankly in the past.
Diaz admitted she once did not realise how important a healthy diet can be, but now emphasises that starving yourself is not the answer.
"Food is your friend and you have to embrace your hunger absolutely -- you are going to be hungry for the rest of your life," she said.
"You have to feed your hunger, honour your hunger, because it's not going to go away. I eat constantly. All my friends are like, 'Excuse me?' They watch me eating and eating.
"A few of my girlfriends don't understand this and they say things like, 'What is your secret?' and I say, 'I don't have secrets, this is science'.
Diaz, who was named the highest paid actress over the age of 40 in Hollywood last year, appears as the cruel Miss Hannigan in the new remake of musical Annie, where she has spent time with some of the film's many young female extras.
"I try to let them know that being 'pretty' will not sustain them," she said.
"When I talk to them I resist that instinctive urge to say, 'Oh, you are so cute,' and instead ask, 'What grade are you in at school?' or, 'What is your favourite subject?' Because every time we address our daughters or our nieces by saying, 'You look lovely today,' we are reinforcing the idea that the most important thing for a woman is to look good."