What can cause gastroparesis other than diabetes? positive ana, vit d deficient, anemia, severe constipation age 35 woman

See GI: For an issue such as this, i assume you are seeing a gastroenterologist. I will comment only on the ANA which is my expertise. By itself, it does not diagnose any condition and may be totally unrelated. However, an ANA positive disease in my field that comes to mind is scleroderma. It is a skin hardening condition which can involve the esophagus, stomach, and intestine. It would be a rare cause.

Neuropathy: There are other causes of neuropathy like auto-immune disorder and positive ANA is an indication of auto-immune disease. However, it is not feasible to provide a meaningful opinion without examining you and it would be prudent to see a doctor, may be a rheumatologist.