Dr. Ravi Kumar is a board-certified neurosurgeon who left the operating room to explore the questions that matter most about your health.
Listen to the PodcastEvery week, I cut through the noise of health headlines and marketing claims to bring you what the research actually says. No dogma, no agenda, just an honest look at the science that shapes how you live, heal, and thrive.
Across 372 routine lab tests in 101,148 adults, how long people had fasted made a real difference for only a handful, mainly blood sugar and triglycerides, so it is worth asking your doctor whether your next draw needs a fast at all.
In Medicare records of 265,639 older adults with cancer, those with depression who started talk therapy within four weeks of diagnosis had a 21% lower risk of dying from their cancer, so if you or a family member feels low after a diagnosis, ask the cancer team for a counseling referral early.
In 313,145 overweight adults, many who fall just under the weight cutoff for semaglutide and tirzepatide carried a similar risk of coronary heart disease, and two blood markers told them apart, but no one has yet tested whether the drugs help this group.
A UC San Diego study of national survey data found that 11.4% of Americans 65 and older who used cannabis in the past year met criteria for cannabis use disorder, so if you or a parent uses it most days, craving and hours spent on it are the signs worth checking, and your other medications are worth raising with a doctor.
In 56,964 UK adults, brisk activity and less ultra-processed food were tied to lower type 2 diabetes risk even when genes loaded the dice, so a family history is no reason to skip moving more and cutting sugary drinks, though the study cannot prove those changes cause the drop.
If you have chronic low back pain, a review of 239 exercise trials suggests three or four 25 to 30 minute sessions a week for two to three months helps about as much as doing more, but pain that runs down your leg was almost never studied and needs its own plan with your doctor.
Dr. Anne Marie Fine is an environmental medicine physician who has spent 25 years measuring what the rest of medicine never tests for. She and Dr. Ravi Kumar get into a UK Biobank study of 44,000 people where the brain and immune system, not the heart, tracked hardest with aging, and where youthful brains behaved like APOE2 carriers and aged brains behaved like APOE4 carriers no matter what the genotype actually was. They work through cadmium, lead released from bone during menopause, mercury vapor from dental fillings, PFAS blunting vaccine antibody response, benzene left behind by a gas stove, mold toxins that shut down glutathione production, DDE that 99% of Americans still carry, and gadolinium from contrast MRI. Then they turn to what you can actually do: avoidance first, air and water filtration, cleaning up makeup and food packaging, and why testing yourself broadly without a plan is bad medicine.
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Dr. Ravi Kumar is a board-certified neurosurgeon and assistant professor of neurosurgery at the University of North Carolina. After years in the operating room, a transformative sabbatical in India changed how he saw medicine forever.
Now, through The Dr. Kumar Discovery, he explores the intersection of modern science, traditional wisdom, and the questions most doctors never think to ask.
Read the full story★★★★★"So glad I found this podcast. Dr. Kumar doesn't want you to just mask symptoms, he wants you to understand root causes and help you truly heal. He is the best of both worlds - he shares a wealth of modern medical knowledge, but also empowers the listeners to take personal responsibility for their health."
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★★★★★"I love this podcast! It's smart and covers the science in very accessible ways. After each episode I feel empowered to make some changes in my life. Thanks, Dr. Kumar!"
Dr Kumar Review
★★★★★"Dr Kumar's podcasts have been such a great find! As an OR nurse I have worked with neurosurgeons for years. I found the podcasts to be informative, easy to follow and just the right length."
NRRN66
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