and so, for the past — since i sold my company, braintree venmo — i made $300 million and this questionter in the year 2500? and right now, it could be ageing. if we slow the speed of ageing and even reverse it, it would change what it means to be human. do you think you're risking your health here? in all the things you're doing to protect it, do you think there's also some real risk? certainly, there's always risks. but there's potentially an argument that we are being more safe than anyone else because we have the rigour of measurement. whilst bryan's signed his life away to experimentation, i visit the buck — the world's first institute for ageing research. these scientists are working on drugs that they hope could delay age—related disease. so, here, i have two of my postdocs, margie and genesis. would you say there has been huge scientific advancement in this field recently, or is there just a sudden trend for investment and interest in it? the science has matured in terms of, you know, we've been doing this for close to 30 years, understanding the basic mechanism of ageing, numbe

since i sold my company, braintree venmo, i made $300 million and this question was, what could i dotant discovery in mice here was the ability to reduce what are called senescent cells. these zombie cells play a useful role throughout our lifetimes but as we age, we acquire many more and as they also lead to inflammation, that increased number ends up providing a hotbed for cancer and all sorts of disease. but maybe we are missing something. lifestyle is responsible for about 93% of your longevity. only about 7% on your genetics so you can't blame your parents. a lot of exercise, some fasting, a lot of good sleep, a lot of social connection, very little alcohol, try to spend at least 1a hours of your 2a—hour day without ingesting any calories. but if they work, why do we need to be trying to deal with this bigger picture of cellular senescence? senescence is still going to happen. hopefully if you exercise, its going to be delayed by 10, 15, 20 years. i don't mean to be saying that lifestyle intervention is all that needs to be done, there is a need for science for the future. what'