What do you see???
I just discovered this glass jar in the back of my refrigerator, with a tightly closed lid.
A little food left over - could have been my sprouted sunflower seeds, I am not sure.
I guess, they sat without any water or other nutrition for a long time, and started dying, or disintegrating.
Nothing attacked them - they simply were left without a life-giving minerals and water.
What do you think happens to our body, our tiny cells, which get malnourished, belonging to a sedentary body?
Of course, you could label it as a disease, if it makes any sense, and you could say that someone made you sick.
Mentally? I could accept that :)