Yes, there has certainly been a lot of research since the eighties.
In fact my cousin developed anorexia in the late eighties when she was around 13 and I wish she had been treated earlier.
It was not until she was about 25 years old that she finally went to a year long program for treatment.
Her parents were in denial for years and did not take her to therapy when she was a teenager. Family dynamics play a large role.
She spent most of her life in treatment, but never weighed more than eighty pounds. She was 66 pounds at 5'8, at her lowest, when she was first hospitalized. Her legs were thinner than my arms.
She was constantly being hospitalized for low potassium levels. She had to be resuscitated many times. When she was around 30 years old, she had part of her jaw removed because of osteoporosis. She had countless other medical problems.
But she was a perfectionist and very intelligent, and managed to get two degrees and hold a job for almost ten years.
By the time she was 30, after having the metal plate put her in jaw to hold it together, she was not able to take care of herself anymore. Her speech was slurred due to brain damage, and it was difficult to have a conversation with her. It was too exhausting for her. She lived like that for eleven more years, until she finally died from heart failure at age 41.
We were all amazed that she lived that long.
It was no way to live, though.
If Skylar really does have an eating disorder, early intervention is the best hope for recovery. It's still not too late. Imo