Can the Human Lifespan Be Extended Indefinitely?

One controversial study claims to have found the edge of the human lifespan. 

Misao Okawa, the world's oldest Japanese woman looks on her 116th birthday celebration on March 5, 2014 in Osaka, Japan. (Photo by Buddhika Weerasinghe/Getty Images)

Do you want to live forever? There’s a controversy within the scientific community if such a thing will ever be possible. In fact, it might even be that we’ve hit the limit of the human lifespan already. Since the 19th century, improvements in public health and diet, the development of modern medicine, a decrease in the infant mortality rate, the decline of smoking, and other advancements in health, have seen the human lifespan elongate dramatically. But is there a ceiling? That depends on whom you ask.   

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