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The study was done in a relatively small town in Kyoto named Kyotango. What makes this town special and a very good place to conduct the study was the fact that its population of people above 100 years old was the highest in Japan - 3 times more than the average for any town in the country. The program - Takeshi no katei no igaku - specifically wanted to find out what these very old - but very joyful - bunch of people in Kyotango had in common when it comes to living their daily lives. The program followed 7 people who were already in their late 90s and early 100s from sunrise to sunset. The program also subjected them to health checkups such as blood tests, among others. One of the interesting findings of the study was that all of the 7 subjects had very high levels of DHEA, which is a steroid hormone produced by the body's adrenal glands. DHEA has a solid reputation of being a miracle hormone that's highly associated with longevity. And as the study continued following the 7 super senior citizens, they discovered another commonality: they all did things that they really enjoyed. Each of them had different hobbies they passionately practiced every day such as painting, fishing and making traditional Japanese masks, among others. Given these findings, is it possible then that doing something you really love to do, something you're very passionate about, is the key to higher levels of DHEA and, therefore, a much longer life? The science on this relationship hasn't been established yet, but the program concluded that regularly doing something that you're very interested in, passionate about, and focused on can give you a long-lasting and deep sense of personal satisfaction in life, which in turn can help elevate your DHEA levels. And when such levels are very high, a long and joyful life isn't far behind. And guess what, the program repeatedly made mention of Ikigai in discussing this concept of conclusion.
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