TL;DR

How to lower blood pressure
What is keto?
How to get rid of hiccups
How long does the flu last?
What causes hiccups?
What causes kidney stones?
What is HPV?
How to lower cholesterol
How many calories should I eat a day?
How long does alcohol stay in your system?

https://www.cnn.com/2019/12/12/health/health-questions-trending-google-2019-trnd/index.html

Surprised "how long does THC stay in the system" isn't on the list