Hi Anne,
Here is a list from patients with a special kind of disease with low platelets called Immune Thrombocytopenic Purpura. There are many
drugs that can give low platelets

.
Then we are told to eat many kinds of
food that should be good for us because that food increases bleeding tendency - we can avoid arteriosclerosis. Patients with low platelets don“t want increased bleeding tendency and have to avoid everything with for example garlic/onions.
http://www.pdsa.org/itp-information/itp-warnings.html
Kind regards
Birgitta-A