"It's not that we're taking everyone who's 100 years old," Barzilai said. "We're trying to get the best of the best because we want really to understand the biology of those who are best. Those who are likely to maybe get to 110 without diseases." "(Irving Kahn) has a gene that controls the good cholesterol," Barzilai said. "This is the HDL cholesterol. And we found that people who have this mutation in the gene have higher good cholesterol, but also they are protected from heart disease and from cognitive decline and Alzheimer's," as quoted by worldrecordsacademy.org. Kahn began his career in finance way back in 1928 at the age of 23. He was then a stock analyst and brokerage clerk on Wall Street. Kahn did his studies at the City College of New York. He also served as a teaching assistant to noted economist and investor Benjamin Graham at Columbia Business School. Kahn is also a Chartered Financial Analyst as reported by Business Insider. Some of Kahn's best quotes about investing are: "Do your own homework and don't believe in the newspapers" "We want to grow our money but not necessarily in growth stock" "You don't have to be fully invested all the time. Have patience keep your standards" "If a company has great prospects everyone already knows about it. We won't be comfortable paying for good prospects" "Value investing is an art not a science"