Ginkgo biloba improves capillary circulation and acts as a blood thinner, which improves circulation to all of the tissues and organs such as the brain and heart. Ginkgo biloba interferes with PAF (platelet activating factor) which has been shown to possibly cause asthma, heart disease, hearing disorders and skin disorders like psoriasis. Ginkgo biloba helps stop the damage to our organs and tissues by free radicals. It is a good antioxidant and free radical scavenger.