Weight gain without any increase in food intake. I gained something like 100lbs in 10 years, and then shed it in 1 year after I had surgery.
Blood in the stool.
Getting winded going up stairs/hills.
Being pale.
I was raised by a narcisist who never took me to the hospital, or dentist. So I was just used to walking it off. Finally my sister saw me at christmas and said “Holy hell!!! You look like shit!” And I thought she was just being an ass. But then she INSISTED I go to the doctor. And they took a blood sample, and refused to believe that I walked into the hospital on my own. Theres a number that measures your blood count. A healthy male of my age/size should have been in the 14-18 range. Any less than 6 is considered at risk for immediate death. I was 4.48. They said I should have been so weak that I should have died long ago from any amount of exercise. Even walking.
Here I was doing work pushing two wheelchairs at once. Sometimes 1,200 pounds at once.