"When you're going through a stressful time, you either hit the biscuit tin or go the other way," she told HELLO! magazine in an exclusive interview and photoshoot. "I went the other way and didn't eat. I'm 5ft 6in and used to weigh around 9st, but last year I went down to 8st — I looked really scraggy.
"I wasn't eating properly or drinking enough water, so it affected my looks and my health. I think everyone has a 'reserve tank' and I was running on that for a while, but when you use that up you hit rock bottom."
Anthea Turner: 'I am an eternal optimist and I will love again'
Posing in an exclusive photoshoot, Anthea also told the magazine that the end of her 13-year marriage to Grant Bovey badly affected her skin and hair, and left her unable to sleep.
"My skin looked grey and became very dry, as though it had lost all its life," she revealed. "My hair also started breaking off. My hairdresser Lino ran his fingers through my hair one day and there was a whole chunk missing.
"I'm normally healthy and very robust, but I didn't have any energy and felt tired all the time. The lack of sleep was the worst part. I slept for only about three hours a night as my mind was racing all the time and I just couldn't switch off."
Now back to her best, Anthea said she is confident about the future. "This is an unusual time in my life. I've come out of a long marriage and I'm in a transitional period. I am an eternal optimist and I will love again. Although it's been the toughest two years of my life, I've learnt so much from it all."
Read the full exclusive article in HELLO! magazine out now.