Check out Jeremy's TED talk and his AMA for a background on who he is. 

2700+ Reddit comments:

https://reddit.com/r/Futurology/comments/3wpz6j/jeremy_howard_ai_is_progressing_so_fast_we_need_a/

One important but buried point he makes is this: "The important thing is for us to be healthier for longer, not necessarily to live for longer." I am in violent agreement with this sentiment, having cohabited with each of my grandparents as they increasingly suffered from dementia FOR DECADES between them. More and more people seem to be living till 100, but very few people seem to live happily after about age 80 -- largely due to ill health.

That is a really good point. Quality of life matters more than length of lifetime.

Ray Kurzweil takes a LOT of pills:

https://en.wikipedia.org/wiki/Ray_Kurzweil#Health_and_aging

Raymond "Ray" Kurzweil is an American author, computer scientist, inventor and futurist. Aside from futurology, he is involved in fields such as optical character recognition (OCR), text-to-speech synthesis, speech recognition technology, and electronic keyboard instruments. He has written books on health, artificial intelligence (AI), transhumanism, the technological singularity, and futurism. Kurzweil is a public advocate for the futurist and transhumanist movements, and gives public talks to share his optimistic outlook on life extension technologies and the future of nanotechnology, robotics, and biotechnology.

Kurzweil admits that he cared little for his health until age 35, when he was found to suffer from a glucose intolerance, an early form of type II diabetes (a major risk factor for heart disease). Kurzweil then found a doctor (Terry Grossman, M.D.) who shares his non-conventional beliefs to develop an extreme regimen involving hundreds of pills, chemical intravenous treatments, red wine, and various other methods to attempt to live longer. Kurzweil was ingesting "250 supplements, eight to 10 glasses of alkaline water and 10 cups of green tea" every day and drinking several glasses of red wine a week in an effort to "reprogram" his biochemistry. Lately, he has cut down the number of supplement pills to 150.

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