Lately been running tired, felt like an old man despite my age and ran blood tests recently and tests results are pretty good except the White Blood cell, Eosinophils that has a 19.1% count (instead of a 0-6% reference range).

Doctor told probably it is from my sinus allergy and other allergies on certain fish as well and not to worry much about that, while when I googled it seems to be able to cause autoimmune diseases etc which I had no understanding about.

Anyone in medical field that can clarify on this matter?