Dr. Robert Kiltz On Hormone Balance, Managing Inflamation, & Gender Roles In Fertility

What It Covers

Robert Kiltz, double board-certified OB-GYN and founder of CNY Fertility — one of America's largest and most affordable IVF centers — outlines his framework for reversing infertility, chronic disease, and inflammation through four pillars: faith, fat consumption, fasting, and fertility mindset, drawing on 40,000+ patient outcomes over his career.

Key Questions Answered

• •Fat-Forward Nutrition: Kiltz argues the root cause of infertility and chronic disease is a low-fat diet, not excess fat consumption. He recommends half to a full stick of butter daily, fatty cuts of meat with fat intact, and eliminating lean proteins. Fat is anti-inflammatory, suppresses harmful gut microbes, and reduces the insulin elevation that drives most modern disease. Cutting fat forces the liver to manufacture it, stressing an already compromised organ.
• •Gut-Fertility Connection: Every reproductive condition — endometriosis, irregular periods, miscarriage, ectopic pregnancy, vaginitis — traces back to gut microbiome overgrowth, according to Kiltz. Plant fiber ferments in the colon, feeding microbes that migrate from the rectum into the reproductive tract. Reducing plant intake, cooking vegetables thoroughly, and extending fasting windows suppresses microbial proliferation and directly improves reproductive outcomes for both men and women.
• •Fasting Protocol: Kiltz practices one meal per day daily, a three-day fast monthly, a five-day fast quarterly, and completed a 15-day fast three months prior to this episode. He argues three days of fasting is the minimum to trigger meaningful autophagy and fully empty the gut of plant antigens. Historically, hunter-gatherer ancestors fasted naturally between hunts, making extended fasting physiologically normal rather than extreme.
• •Mindset as Fertility Treatment: Kiltz prescribes identity-based affirmations — specifically "I am a mother" or "I am a father" — rather than goal-based language like "I want" or "I hope." He integrated meditation, yoga, acupuncture, and prayer into CNY Fertility's clinical protocol after observing that reducing cortisol and epinephrine while building oxytocin and serotonin measurably improved pregnancy rates. Chronic worry and negative thought patterns generate inflammation that directly impairs reproductive function.
• •Movement Over Exercise: Kiltz distinguishes between natural daily motion and structured repetitive exercise, which he views as mechanically damaging. His personal protocol includes approximately one hour of walking daily, 100 push-ups each morning, a standing desk, and light hill walking with weights. He points to rising joint replacement rates as evidence that high-frequency gym training accelerates wear rather than extending physical longevity, citing no wild animal that exercises for its own sake.
• •Birth Control and Reproductive Timing: Kiltz identifies hormonal birth control — originally derived from Mexican yam — as a significant contributor to rising infertility rates, citing its widespread prescription for acne and irregular periods as medically inappropriate. He also notes that postponing reproduction into the late thirties and forties conflicts with peak female fertility in the teens and early twenties, and that male fertility declines follow the same dietary and lifestyle causes as female infertility.