The 75-year-old actress said she takes twice-daily yoga sessions and recently went through a week-long cleansing regime, avoiding all dairy products, red meat, wheat and coffee, reported Daily Express.
"For a woman, making peace with your body is a work in progress. I have spent time in therapy, written books that have helped me heal as well as helped others. For me, healing meant understanding that good enough is good.
We don't have to be perfect," she said. Fonda said she had suffered eating disorders from the age of 12, veering between a series of food binges and purges.
"I started the year with a week-long cleanse no coffee, dairy, red meat or wheat. Instead I had lots of juices, vegetables, chicken and fish, oats, beans and cleansing teas.
"I'm still basically eating that way now, and will probably never go back to coffee. I eat fish, especially salmon and tuna, three times a week. This is really good for older people," she said. The actress recently released a yoga DVD.