In this study a blockage stroke (ischemic stroke; the most common form by far) was simulated in laboratory animals. L-Theanine was supplemented immediately after the first stroke. L-Theanine significantly protected their memory and this effect was evident 7 days after the second stroke.

In this study 208 men and 191 women 75 years of age in 1999-2000 were followed on average for 70 months; none of these seniors were living in institutions but still lived in their community. Blood samples were used to test the level of various nutrients in their blood; Iron, B12, Folic Acid, Vitamin C, and Vitamin D (the active form). Having lower levels of Vitamin D increased the risk of dying over the study period with ever increasing serum levels related to a steadily declining risk of dying.

It is the job of matrix GLA protein (MGP) to keep the arteries in the heart and the rest of the body clean and clear. MGP whisks calcium away from blood vessel walls preventing clogging and hardening of these blood vessels and protecting our circulatory system. However, MGP requires Vitamin K to work and MGP cannot play its central role in maintaining the health of the entire cardiovascular system if the level of Vitamin K is low.

Scottish men between the ages of 50 to 74 had their blood tested and filled out food frequency questionnaires to determine their phytoestrogen intake. The Lignan created out of Flaxseed lignans known as enterolactone significantly impacted health and decreased the risk of prostate cancer by 60% and soy foods decreased the risk by 48%. The study is published in the August 2007 issue of the British Journal of Nutrition.