Maybe we can conclude our conversation with this question. Could I ask you this, in your decades of anti-aging research, what is the most surprising, the most unusual, the most sort of observation that made you wiser? That's a good question. Am I wiser now than I was then? I think the most surprising thing that I've seen come out of all of the aging research is the sex difference thing. I mean, it never entered my mind. Well, there are two things. Dr. Steven Austad, PhD. Dr. Anton Titov, MD. That's one of the things that we could have drugs that would specifically help one sex and not the other. I think this will turn out to be the first part of personalized medicine to emerge as the drugs that are working in females versus males. Dr. Steven Austad, PhD. Dr. Anton Titov, MD. But the other surprising thing is how late in life we can start treatments, whether they are medical treatments, whether exercise programs, changes, and diets, and still have a substantial effect on the remaining period of life. I used to think that if you didn't start these things in your 20s or 30s, there was just too late to have much of an impact on later-life health. We now know that that's not true. It's never too late. And so that's the second surprise that I think I would have never suspected. And since I'm older now than I was when I started this, this is a very gratifying thing to discover. Professor Austad, thank you very much for this most helpful conversation, it's most intriguing. We hope to come back to you in the future for more insights into anti-aging research, and perhaps some practical actions that people can do around the world. Thank you very much. Oh, thank you. It's been a pleasure talking with you. Goodbye! Dr. Steven Austad, PhD. Dr. Anton Titov, MD.