According to the article of research analyst Renee Stepler (Pew Research Center), centenarian population of the world has an exponential growth and will expand eightfold by 2050. How can we get to the number of longest lived people? Let's see 10 articles in which centenarians and supercentenarians share their secrets:
http://www.forbes.com/sites/nextavenue/2013/08/20/7-life-secrets-of-centenarians/
http://www.huffingtonpost.com/adoree-durayappah-mapp-mba/healthy-living-news_b_5301711.html
http://articles.mercola.com/sites/articles/archive/2014/01/09/centenarians.aspx
http://www.chatelaine.com/health/how-to-live-to-100-years-old-as-shared-by-a-centenarian/
https://www.institutefornaturalhealing.com/2016/12/surprising-diet-secret-worlds-oldest-person/
http://www.abc.net.au/news/2017-01-14/a-centenarians-secret-to-long-life-dont-worry-so-much/8180114
http://www.neatorama.com/2017/02/06/Secrets-of-the-Centenarians/
http://www.womenofchina.cn/womenofchina/html1/people/others/1702/822-1.htm