My sister lost weight a few years ago, her BMI dropped from 30+ to 21, very proud of her taking steps to get healthier, I've always supported her no matter what.
I'm starting to worry a bit. She talks about being terrified of putting weight on, won't eat out anymore, and is very strict with what she allows herself. As far as I can tell, her weight hasn't dropped anymore though.
Can you have an eating disorder but not be underweight? Am I worrying unnecessarily? She checks herself in mirrors constantly and calls herself fat even though she's a size 8/10. Should I say something?