Open Question: Is There a Relationship Between an Extremely Low Body Weight and Worsening of OCD Behaviors?

I'm 19 years old, both anorexia and obsessive-compulsive disorder. I was diagnosed with obsessive-compulsive disorder 6 years old, and 13-year-old anorexia. Last summer, I went to a weight, is still very slim, but I am the type of physical health, it seems that my OCD behavior / ideas to improve a lot. I have recurrence, it is down to a lower weight, my OCD is out of control. So, I think my question is, will it be my low body weight is to make my OCD symptoms worse? If I want to achieve a healthy weight, my obsessive-compulsive disorder may be improved? I just want to know whether a chemical or a similar explanation. Thank you so much