At the least, once a year.
This can vary between people with certain partners and such. You should test before symptoms appear because usually, once symptoms appear, it is too late to be cured or treated.
Every six months can be frequented and sometimes preferred but is not required. Once a year is the least a person could do to test for STD's.
Hope this helps!
I honestly never thought about that but if I were to guess I would say he definitely has ADHD. He is impulsive in his action against other people, doesn’t listen to what his crew tells him. He also switches between thinking about food, meat and becoming the pirate king. Plus all that jumping around and acting jittery is an everyday business.