(CNN)The word "fat" has haunted Harriet White her entire life.
"When I was little, probably seven or eight, the doctor told my mom, 'She's fat, take her to Weight Watchers.' I ate Melba toast and cottage cheese," said Harriet, now age 50.
School lunches, she remembers, turned her into an object of ridicule among her elementary classmates.
"Kids would laugh at me because I would have this nasty brown bread with unsweetened peanut butter, carrot sticks, celery sticks and black olives, while everyone else got baloney on Wonder Bread and potato chips," Harriet said.
"Then when I visited my grandmother I'd gorge on chips and candy," she added. "So I grew up with a very unhealthy relationship to food."
And all the makings of a childhood eating disorder that would follow her for life.
"No one wakes up one day and says, 'Hey, I'm going to have an eating disorder.' It's a slow descent into hell," says registered dietitian Evelyn Tribole, the co-author of "Intuitive Eating," an anti-diet plan that stresses re-learning the body's cues for healthy eating.
It would take Harriet years to shed her childhood trauma and turn to intuitive eating to heal her broken relationship with food. It's a struggle shared by hundreds of millions of adults around the world who also suffer from an eating disorder.
A global problem
In the United States, at least 30 million people suffer from disordered eating, according to the National Association of Anorexia Nervosa and Associated Disorders (ANAD).
It's not just obsessive Americans or members of other Western societies who suffer. A 2019 study found eating disorders doubled globally between 2000 and 2018, rising from 3.5% for the 2000 to 2006 period to 7.8% for the 2013 to 2018 period.
Considering the planet holds approximately 8 billion people, that would be about 624 million of us with unhealthy relationships with food, a growing number of those in Asia and Middle Eastern countries.
You don't have to starve yourself into anorexia or binge and purge to have an eating disorder. Anyone who spends a good deal of their day "thinking about food, weight and body image" could be on the eating disorders spectrum, ANAD says.
Shame of being different
Born into a Southern family with a Greek mother that mixed "good Southern food with good Greek Mediterranean food," family dinners at Harriet's home always included salad, broccoli or Brussels sprouts, healthy greens like turnip greens, chard, kale or spinach, brown rice and chicken or fish.
Despite both healthy choices and dietary restrictions, Harriet's body continued to defy society's standards.
In high school Harriet was diagnosed with polycystic ovary syndrome, or PCOS, a hormonal disorder that triggers the female body to produce too many male androgens.
Women with PCOS gain weight like a man, centered around the abdomen. Losing weight with the condition is extremely challenging; today, doctors often turn to various medications to block the excess hormones.
It should have been a turning point in understanding her body. But doctors knew little about PCOS back then, Harriet says, and they were extremely unsympathetic to her weight loss struggles.
Her self-esteem continued to plummet.
"I was trying to hide myself in PE [physical education class] because I was fat and I was dumpy," she said. "I grew up with self-loathing, you know, and all the stuff that comes along with that baggage that you carry when you don't look like what society thinks you should look like."