Ginkgo Biloba and Dementia: A Promising Treatment?

Recent research suggests that Ginkgo biloba extract may offer benefits for individuals already diagnosed with dementia, potentially alleviating some of their symptoms. While not a cure, studies indicate improvements in cognitive function and daily living skills for those with existing dementia. Still, the evidence is less conclusive for those with cognitive impairment related to multiple sclerosis or mild cognitive impairment.

What is Ginkgo Biloba?

Ginkgo biloba is one of the oldest tree species, and its standardized extract, EGb 761, is used in modern medicine. Bioactive ingredients like flavonoids and terpene lactones are believed to have antioxidant and neuroprotective effects, though current research focuses on clinical outcomes rather than solely on these mechanisms. [1]

Research Findings on Ginkgo Biloba and Cognitive Impairment

A comprehensive analysis of data from 82 randomized controlled trials, involving a total of 10,613 participants, has shed light on the potential benefits of Ginkgo biloba. Outcome data was evaluated from 72 of these trials, focusing on overall clinical status, cognitive function, ability to perform activities of daily living (ADL), and potential adverse events.

Cognitive Impairment and Multiple Sclerosis

The research showed no statistically significant difference between Ginkgo biloba and a placebo in patients experiencing cognitive impairment related to multiple sclerosis. Evidence suggests little benefit in improving cognitive function in this population. [2]

Mild Cognitive Impairment

An analysis of 1,913 patients with mild cognitive impairment revealed no significant differences compared to a placebo in overall clinical status, cognitive function, or the ability to perform daily activities after six months. [2]

Dementia

For patients already diagnosed with dementia, Ginkgo biloba showed promising results. Participants taking Ginkgo biloba tended to exhibit improvements in overall clinical condition and cognitive function compared to the placebo group. Their ability to perform daily activities as well appeared to be enhanced. [1], [2]

Real-World Evidence Supports Benefits

A retrospective cohort study analyzing data from 4,765 patients diagnosed with mild or moderate dementia between 2005 and 2022 found that prescriptions for Ginkgo biloba extract (Gbe) were associated with a significantly decreased risk of dementia severity progression. Patients prescribed Gbe had a 50% reduction in hazard ratio compared to those not prescribed Gbe. [4] This effect was observed in both patients with mild and moderate dementia.

Safety and Risks

Studies comparing Ginkgo biloba to a placebo have not indicated an increased risk of harm. [2]

Key Takeaways

• Ginkgo biloba extract may aid alleviate symptoms of dementia in those already diagnosed.
• Evidence is less conclusive for cognitive impairment related to multiple sclerosis or mild cognitive impairment.
• Real-world data suggests a link between Gbe prescriptions and slower dementia progression.
• Ginkgo biloba appears to be safe, with no increased risk of harm reported in studies.

Further research is ongoing to fully understand the potential of Ginkgo biloba as a supportive treatment for dementia and other cognitive impairments.