[ProtectOurFreedom]

Yes, thousands of years if you count Chinese experience. Here's a good article at HealthOnline with a list of POSSIBLE benefits. There's not much it can't do...

12 Possible Benefits of Ginkgo Biloba, Plus Side Effects and Dosage

1. Contains powerful antioxidants
2. Helps reduce inflammation
3. Improves circulation and heart health
4. Reduces symptoms of psychiatric disorders and dementia
5. Improves brain function and well-being
6. Reduces anxiety
7. Treats depression
8. Supports vision and eye health
9. Treats headaches and migraine
10. Improves asthma and COPD symptoms
11. Reduces PMS symptoms
12. Treats sexual dysfunction

[TexasGator]

You left out a known benefit. It reduces the weight of your wallet.