I read that eating raw garlic has a ton of health benefits. are there any negatives with garlic? does it make your blood too thin?

"Everything in moderation...." was the maxim I was taught. You can certainly overdo it with garlic. This article may answer your questions : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3954349/#:~:text=Garlic%20is%20known%20to%20be,%2C%20warfarin%2C%20dipyrimadole%20and%20clopidogrel.&text=The%20composition%20of%20the%20garlic%20supplement%20affects%20its%20potency.