I Have A Friend And She Likes Swallowing White Out

I have a friend and she likes swallowing white out (correction fluid). She's been doing it for years and she goes to the doctor but hadn't told them. She's healthy nonhealth issues. But when she came to me about it. She said it started off living the smell and she wanted to taste it. So she did and she said she liked. But her poop is almost white when she does. She said she also tried swallowing gasoline as well. And mother ever happened to her. But I'm scared for her safety and health. What are the effects of her doing all this?