Ray Kurzweil, inventor, author and futurist, predicts that The Singularity is coming in 2045 and he plans on living long enough to see it. He would be 97 at the time, and in order to survive that long and find out if his predictions will come true, Kurzweil takes 150 pills a day, some 70 to 80 different substances that radically reprogram his body's biochemistry.

In a recent interview he explained what he thought were the most important supplements on the long list: coenzyme Q10, phosphatidylcholine, and vitamin D. The benefits and risks of many health supplements are tough to quantify, and there hasn't been enough scientific study done on many of them. Coenzyme Q10 is a powerful antioxidant, and phosphatidylcholine is a substance in cell membranes that we tend to lose as we age. All three substances can be found in many foods or produced in the body as a result of a healthy diet.