Four physicians. One podcast.

Dr. Shahab Mokhtare is a family medicine physician in Las Vegas who has practiced longevity and age management medicine since 2010. He did his undergraduate degree at UC Irvine and his family medicine residency at the University of Nevada School of Medicine. During residency he took an elective in age management medicine, and it changed how he saw the job. Most of medicine waits for disease to show up and then treats it. This was the first time he saw doctors testing in depth, fixing lifestyle and lab problems early, and following the same patients for years instead of seeing them once and moving on. He went into that kind of practice the day residency ended, and he has done it ever since.

His work now is building programs around a patient's own data: metabolic health, body composition, strength, and sleep. The starting point is testing, not guessing, and the plan gets adjusted as the numbers change. A lot of the work is getting people off medications they have been on for years, when their labs say it is safe to do it, and keeping them strong enough to do what they want at 60 and 70. He does CrossFit and eats mostly paleo, so he lives on the same advice he gives his patients. On Against The Clock, he brings 16 years of that practice to the table.

Dr. Stephanie Singer is a board-certified OB/GYN and surgeon in Park City, Utah, who has practiced longevity and age management medicine since 2014. She spent the first part of her career in women's health, and that is where she learned how much hormones drive energy, sleep, body composition, mood, and sex drive, and how little of it gets addressed in a standard visit. Patients would come in with complaints that were real and measurable, and the usual answer was that it was just aging. She did not accept that, and in 2014 she moved her practice toward treating those changes directly.

She now works with both men and women on the changes that come with menopause, andropause, and metabolic decline, with the goal of lowering their risk of age-related disease while they still feel well. Her programs run on labs. Patients start with comprehensive diagnostics and biomarker analysis, then hormones, nutrition, exercise, and supplements get adjusted against the results and against how the patient actually feels. Then they retest and adjust again. She does not think good aging happens by accident. It is designed, tracked, and corrected over time. On Against The Clock, she brings 12 years of that practice to the table.

Dr. Keith Fleischman is an anesthesiologist by training with 28 years in clinical medicine, and he now practices longevity and age management medicine in New York. He went to medical school at the University of New England College of Osteopathic Medicine and did his anesthesiology residency at St. Barnabas Medical Center in New Jersey, where he received the Robert Dripps Award for outstanding resident. He went on to train in obstetric anesthesia and critical care, served as section chief of obstetric anesthesia, and was named a Top Doc in New Jersey by New Jersey Magazine based on nurse nominations. He still teaches physicians and medical students through Robert Wood Johnson Medical School.

Critical care teaches you to work from the numbers, because a patient who is crashing does not give you time to guess. He brought that habit into longevity and age management medicine: measure first, fix what the data shows, and keep measuring. His interest in the field started with his own body. He has done martial arts since he was young and holds a black belt, he practices yoga, and he plays and coaches competitive soccer, and he has felt the difference a proactive approach makes in how he ages. His wife is Brazilian American, they keep a home in Brazil, and he speaks Portuguese. On Against The Clock, he brings 28 years of that practice to the table.

Dr. Bhavesh Patel is a board-certified physician in Chicago who has practiced longevity and age management medicine, with functional medicine training, for 17 years. He started in urgent care, occupational health, and emergency medicine, which meant a lot of acute illness and a lot of patients whose problems had been building for a decade before they walked in. That reactive model wore on him, so he left clinical medicine for two years and worked on Wall Street as a biotech and pharmaceutical research analyst. He read trial data for a living, went to the major medical conferences, and talked directly with the researchers running the studies. It taught him how to tell a promising therapy from a marketed one, and he has not stopped reading the studies since.

He came back to medicine to practice prevention, and for the past ten years he has run a longevity practice in Chicago where he has worked with hundreds of patients on personalized programs. He treats nutrition, fitness, supplementation, hormones, and medical management as connected levers, not separate problems, and his functional medicine training keeps him looking at the whole person instead of one lab value at a time. He went to Rush for medical school and did his residency at UIC/Illinois Masonic. He lives in Chicago with his wife and daughters, plays tennis, bikes, and rides an electric skateboard to work when the weather lets him. On Against The Clock, he brings 17 years of that practice to the table.