The best way to determine your biological age is a test, such as TruAge. Such tests examine up to 900,000 data points in your genome to determine your biological age. I recommend taking such a test before you begin your antiaging intervention (to establish a baseline) and then again in a year or two. I just learned about TruAge — one of the most advanced epigenetic clocks — a few weeks ago and my test results are still pending. I’ll update this article with my results as soon as I receive them. If you’d like to give TruAge a try, you can use discount code MK50 to get $50 off.