High-Dose Flu Shot May Only Help the Frailest Seniors
A 332,438-person Danish trial found the high-dose flu vaccine's advantage over the standard shot grew as frailty grew, which gives a healthy 65-year-old little reason to go hunting for it.

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.
A 332,438-person Danish trial found the high-dose flu vaccine's advantage over the standard shot grew as frailty grew, which gives a healthy 65-year-old little reason to go hunting for it.
A nationwide study in CHEST finds 13.5% of US adults with a smoking history qualify for a lung cancer scan only under the American Cancer Society's newer rule, and most of them never get one, partly because the federal criteria that drive insurance coverage still leave them out.
In 193,260 Americans tested for tick-borne illness, 29.5% of those with lab evidence of Lyme also carried antibodies to a second tick pathogen, and the standard Lyme antibiotic does nothing against one of the most common ones.
A study of about 172 million person-years found that California's red flag law was followed by at most a small drop in suicide among handgun owners, and for a family living with someone in crisis the step with the clearest evidence behind it is moving the guns out of the house, not waiting on a court.
If you have had a heart attack, a stent, bypass surgery, or angina, a Cochrane review of 107 trials says structured exercise rehab lowers your odds of another heart attack, and newer home and app-based programs appear to work as well as going to a center.
A study of 75,455 US adults with type 2 diabetes found the kidney advantage showed up only in people who had protein in their urine, which is a result most people can get from a cheap urine test they may never have been offered.
Most men picture yoga as a stretching class for people who are already flexible. Dean Pohlman, founder of Man Flow Yoga, and neurosurgeon Dr. Ravi Kumar make the case that it may be the most useful training most of us are missing. They cover the 2017 study showing yoga works as well as physical therapy for chronic low back pain, the four pillars of spinal health, why isometric holds rebuild the muscle activation that sitting all day erodes, and why a random class can actually make a herniated disc worse. They also get into breath as the gateway to the nervous system, yoga and heart rate variability, a study where three months of yoga kept gray matter from shrinking in women with subjective cognitive decline, Dean's own before-and-after breathing test, and how to find a style and teacher that fits your fitness level.
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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."
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