Ginkgo biloba is one of the oldest living species on Earth. Fossil records place it at 270 million years old — it predates the dinosaurs. It survived the mass extinctions that wiped out most of what existed alongside it. Individual trees can live for over 1,000 years. And for centuries, its leaves have been used in traditional Chinese medicine for cognitive and circulatory health. The modern research is now confirming what traditional practitioners have known for a long time: this is a genuinely remarkable botanical.
What Makes Ginkgo Work
The therapeutic properties of ginkgo biloba come from two main classes of active compounds: flavonoids and terpenoids. Flavonoids — including quercetin and kaempferol — are potent antioxidants that protect cells from oxidative damage and have anti-inflammatory effects. Terpenoids — particularly ginkgolides and bilobalide, compounds unique to ginkgo — improve blood circulation and inhibit platelet aggregation.
Together, these compounds give ginkgo a mechanism profile that targets several of the most significant drivers of age-related decline: oxidative stress, poor circulation, and inflammation.
The Research-Supported Benefits
Cognitive function. The most established use of ginkgo biloba is cognitive support, primarily through improved cerebral blood flow and neuroprotection. Studies show benefits for memory, attention, and mental processing speed in older adults. Some research specifically in Alzheimer's disease and vascular dementia shows modest but measurable effects, though ginkgo is not a treatment for these conditions.
Antioxidant protection. The flavonoid compounds in ginkgo are among the most potent free radical scavengers studied in botanical medicine. Free radical damage is implicated in cardiovascular disease, certain cancers, and age-related macular degeneration. Ginkgo's antioxidant activity provides a degree of cellular protection across all of these.
Eye health. Research suggests ginkgo may benefit glaucoma and age-related macular degeneration through improved blood flow to the optic nerve and retina and direct antioxidant protection.
The Precautions That Actually Matter
The most important safety consideration with ginkgo is bleeding risk. Because it inhibits platelet aggregation, ginkgo can potentiate the effects of blood thinners, aspirin, NSAIDs, and other antiplatelet medications. Anyone on these medications should consult their healthcare provider before using ginkgo. The same applies to anyone with scheduled surgery — stop ginkgo at least two weeks beforehand.
Raw ginkgo seeds are toxic. Never consume them. The commercially available supplements are derived from leaves and processed to remove harmful compounds.
With those caveats in place — and they are real ones — ginkgo biloba has 270 million years of evolutionary refinement and decades of clinical research behind it. That is a combination worth paying attention to.