I’ve had low platelet counts for several years, but I attribute that to several factors. The first was that I used to periodically donate platelets. By itself, that souldn’t have led to any problems. However, I also take niacin for my cholesterol and I perform high-intensity strength-training. Niacin has been shown to decrease platelet production. Since platelets are also involved in muscle repair, high-intensity strength-training could also deplete them. I also donate blood three to four times a year which also reduces platelet count.
Even though my platelet count is within normal limits, albeit on the low side, I don’t bruise easily (ego doesn’t count:)) and any bleeding stops normally.