5 'HEALTHY' FOODS WRONG FOR YOUR KIDNEYS

70 lbs Lost in a Trial: What Retatrutide Means for Your Kidneys

A new triple-agonist shot, retatrutide, just posted the biggest weight loss we have ever seen from a single injection in a phase 3 obesity trial: 28.3% of body weight at 80 weeks, roughly 70 pounds, and almost double what Ozempic delivered in its pivotal trial. I'm a nephrologist and obesity medicine specialist, and in this episode I break down the TRIUMPH-1 data, how the drug works (GLP-1, GIP, and glucagon all at once), and the dose-by-dose results. Then I get into the part most coverage skips: the dehydration risk that can drive acute kidney injury, the honest answer on whether these drugs protect your kidneys, the realistic timeline to an FDA-approved version, and why you should not buy the compounded "retatrutide" sold online. I close with three specific things to do this week if you are on a GLP-1 or thinking about one. Educational only, not medical advice. Talk to your prescriber before making any medication decisions. JOIN THE NEWSLETTER for weekly evidence-based kidney, metabolic, and longevity research: https://selfprinciple.org/newsletterLearn more about Dr. Sean Hashmi and SELFPrinciple.org, a 501(c)(3) nonprofit: https://selfprinciple.org CONNECTYouTube: https://youtube.com/@SeanHashmiMDInstagram: https://instagram.com/seanhashmimd DISCLAIMERThe information in this content is for educational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have seen in this content. The views expressed here are my own and do not represent the views of my employer or any affiliated institution.

5 'HEALTHY' FOODS WRONG FOR YOUR KIDNEYS

If you have kidney disease, the smoothie your cardiologist told you to drink could be the single biggest reason your numbers are getting worse. The same foods you ate for 30 years without a problem can become a problem the day your kidney function drops. Most of the wellness advice on the internet was not written for you. In this episode, Dr. Sean Hashmi walks through 5 foods sold as healthy that actively harm two specific groups of patients: anyone with chronic kidney disease at any stage, and anyone with a history of calcium oxalate kidney stones. For viewers with normal kidney function and no stone history, most of these foods are fine. The risk profile changes once the kidney does. The 5 foods covered: Protein bars and powders with phosphate additives. Anything starting with the word "phos" on the ingredient list (disodium phosphate, phosphoric acid, sodium hexametaphosphate, sodium tripolyphosphate) is inorganic phosphorus, absorbed at 90 percent or higher compared to 20 to 40 percent for plant phosphorus and 40 to 60 percent for animal phosphorus. For CKD patients, that buried additive load drives parathyroid hormone and FGF-23 up, pulls calcium from bones into blood vessels, and accelerates vascular and bone disease. Coconut water. 400 to 600 mg of potassium per cup, roughly the same as a banana, sometimes more. For CKD patients on ACE inhibitors, ARBs, or spironolactone, that load can push blood potassium into a dangerous range. Plain water is the default. Excessive protein shakes. KDIGO 2020 guidelines target 0.55 to 0.6 g of protein per kg of ideal body weight for non-diabetic CKD stage 3+ and beyond. Two scoops of whey can exceed the entire daily ceiling before any food is eaten. Protein needs go up on dialysis, not down. The target gets built with a renal dietitian, not a fitness magazine. Star fruit. Contains a neurotoxin called caramboxin that is normally cleared by the kidneys. When kidney function is reduced, it accumulates and crosses the blood-brain barrier. A 2003 series in Nephrology Dialysis Transplantation followed 32 uremic patients who had ingested star fruit: 30 had intractable hiccups, 22 had vomiting, 21 had disturbed consciousness, 7 had seizures. Patients treated with hemodialysis recovered. Patients on peritoneal dialysis did not survive. The spinach-almond-beet smoothie. Half a cup of cooked spinach has 755 mg of oxalate. One ounce of almonds has 122 mg. The daily oxalate ceiling for stone formers is 50 to 100 mg. A single smoothie can hit 5 to 10 times that ceiling. The fix is not "no greens." Kale, bok choy, collards, and arugula are all low-oxalate. Pumpkin seeds and sunflower seeds substitute for almonds. And pairing any moderate-oxalate food with a calcium source at the same meal binds the oxalate in the gut so it leaves in the stool instead of being absorbed. For plant-based readers, calcium sources include calcium-set tofu (200 to 400 mg per half cup), fortified plant milks (300 to 400 mg per cup), fortified plant yogurts, cooked collards, kale, bok choy, tahini, and white beans. There is no universally good or bad food. There are foods that are right or wrong for your specific kidney function, stone history, and medications. The kidney decides. JOIN THE NEWSLETTER for weekly evidence-based kidney, metabolic, and longevity research: https://selfprinciple.org/newsletter Learn more about Dr. Sean Hashmi and SELFPrinciple.org, a 501(c)(3) nonprofit: https://selfprinciple.org CONNECT YouTube: https://youtube.com/@SeanHashmiMD DISCLAIMER The information in this content is for educational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have. Never disregard professional medical advice or delay seeking it because of something you have seen in this content. The views expressed here are my own and do not represent the views of my employer or any affiliated institution.

This Kidney Number Predicts How Long You Live

People who live to 100 share one quiet pattern that nobody talks about. It is not their cholesterol. It is not their gym routine. It shows up as a single number on a routine blood test, and 9 out of 10 people with abnormal kidney function have no idea theirs is wrong. In this episode, Dr. Sean Hashmi walks through the centenarian kidney pattern researchers have actually found across multiple cohorts. The Leiden Longevity Study found that middle-aged offspring of long-lived families had measurably higher eGFR than environmentally matched controls. A 2016 study in Scientific Reports following 60 Chinese centenarian families showed that BUN and creatinine rose with age in the general population but stayed on a plateau in centenarians. The Tokyo Centenarian Cohort followed nearly 2,000 oldest-old participants and showed that even past age 100, kidney function independently predicted survival. Dr. Sean Hashmi explains why kidneys are master chemical regulators rather than simple filters. They handle six different jobs 24 hours a day: blood pressure regulation, sodium and potassium and calcium balance, blood acidity control, red blood cell hormone production, vitamin D activation, and waste clearance. When those control systems drift off target, the heart works harder, bones get fragile, energy drops, and even cognition slows. Someone with chronic kidney disease is far more likely to die of a heart attack or stroke than to ever reach dialysis. The four daily levers (the SELF framework: Sleep, Exercise, Love, Food) come with hard data. Sleeping under 4 hours raises new-onset kidney disease risk by 45 percent. Physical activity in CKD patients reduces mortality by 56 percent (a hazard ratio of 0.44 that most medications cannot match). The Holt-Lunstad meta-analysis of over 300,000 participants found that social isolation raises mortality by 29 percent, exceeding the risk from physical inactivity and obesity. The Singapore Chinese Health Study following 60,000 adults found that replacing one daily serving of red meat with fish, chicken, eggs, or legumes was associated with up to a 62 percent relative reduction in end-stage kidney disease risk. Dr. Sean Hashmi closes with the two labs that cover most of the picture (eGFR and UACR), the difference between age-appropriate and below age-appropriate kidney function, and the exact two-minute conversation to bring to your next appointment. JOIN THE NEWSLETTER for weekly evidence-based kidney, metabolic, and longevity research: https://selfprinciple.org/newsletter Learn more about Dr. Sean Hashmi and SELFPrinciple.org, a 501(c)(3) nonprofit: https://selfprinciple.org CONNECT YouTube: https://youtube.com/@SeanHashmiMD Instagram: https://instagram.com/seanhashmimd DISCLAIMER The information in this content is for educational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have seen in this content. The views expressed here are my own and do not represent the views of my employer or any affiliated institution.

5 Over-the-Counter Pills That Are Quietly Damaging Your Kidneys

You probably have at least three of these in your bathroom cabinet right now. They cost $10, they feel harmless, and in the wrong person, taken often enough, they can damage kidneys for years without a single warning sign. In this episode, Dr. Sean Hashmi walks through five classes of over-the-counter medications that quietly harm kidneys. NSAIDs (ibuprofen, naproxen, aspirin) block the prostaglandins that keep blood flow open into the kidney filter. A 2013 BMJ study of nearly half a million patients found that adding an NSAID to a diuretic plus an ACE inhibitor or ARB raised the rate of acute kidney injury by 31 percent, with the risk highest in the first 30 days. Proton pump inhibitors (Prilosec, Nexium, Prevacid) are linked to acute interstitial nephritis, an immune-driven inflammation that can scar the kidney if it goes unrecognized. A 2016 JAMA Internal Medicine study of 10,482 adults in the ARIC cohort found PPI users had a 20 to 50 percent higher risk of chronic kidney disease, replicated in a second cohort of nearly 250,000 patients. High-dose vitamin C supplements (1,000 mg or more daily) partially convert to oxalate in the liver, binding calcium in the urine and forming calcium oxalate crystals, the most common kidney stone. A 2013 study of 23,355 Swedish men found double the risk of kidney stones over 11 years. Cold and flu combination products stack NSAIDs with decongestants that constrict blood vessels and raise blood pressure. Hypertension is the second leading cause of kidney failure in the United States, accounting for 29 percent of new dialysis cases per USRDS data. Certain laxatives and antacids load the body with magnesium and phosphate that a weakened kidney cannot clear. The FDA issued a 2014 drug safety communication on sodium phosphate laxatives after cases of acute phosphate nephropathy that required dialysis. Dr. Sean Hashmi shares the exact mechanism behind each drug class, the specific patients most at risk, the 3-question checklist to run on every pill in your medicine cabinet, and the 30-second pharmacist conversation that could change your kidney trajectory. This is awareness, not self-prescribing. Do not stop any prescribed medication without consulting your physician. JOIN THE NEWSLETTER for weekly evidence-based kidney, metabolic, and longevity research: https://selfprinciple.org/newsletter Learn more about Dr. Sean Hashmi and SELFPrinciple.org, a 501(c)(3) nonprofit: https://selfprinciple.org CONNECT YouTube: https://youtube.com/@SeanHashmiMD Instagram: https://instagram.com/seanhashmimd DISCLAIMER The information in this content is for educational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have seen in this content. The views expressed here are my own and do not represent the views of my employer or any affiliated institution. Never start, stop, or change the dose of any prescription medication without consulting your physician.

What the FDA Just Approved Ozempic For Has Nothing to Do With Weight

A trial of 3,533 people with type 2 diabetes and chronic kidney disease was stopped early in late 2023. Not because something went wrong. Because the drug worked so well that leaving anyone on placebo was no longer ethical. That drug was Ozempic. Eight months later, the FDA approved semaglutide for a reason that has nothing to do with weight loss. In this episode, Dr. Sean Hashmi breaks down the FLOW trial, the diabetic kidney disease study that changed the standard of care. Patients on semaglutide saw a 24 percent reduction in the composite kidney outcome, a 38 percent drop in albuminuria, an 18 percent reduction in major adverse cardiovascular events, and a 20 percent reduction in all-cause mortality across three and a half years of follow-up. The patients in the trial were already on standard care: ACE inhibitors or ARBs, often metformin, sometimes SGLT2 inhibitors. The semaglutide benefit was stacked on top, and the effects were additive. Dr. Sean Hashmi covers the four mechanisms behind the kidney benefit. Glucose control reduces glycation and oxidative stress in the small vessels feeding the kidney. Weight loss of 10 to 15 percent at higher doses reduces the inflammatory load on every organ. Modest blood pressure reduction and natriuresis lower the force pushing on the inside of the kidney filter. And the mechanism that makes this drug a true kidney-saving therapy: GLP-1 receptors sit on immune cells, on the cells lining blood vessels, and inside the kidney itself, and activating them appears to dampen the chronic low-grade inflammation that drives diabetic kidney scarring. The episode walks through the four actionable steps every patient with type 2 diabetes and CKD should take before their next appointment. Pull the last lab panel and find the eGFR and the urine albumin-to-creatinine ratio. Bring the FLOW trial up at the visit with the exact words Dr. Sean recommends. Build a sick day plan at the prescribing visit because dehydration on a GLP-1 can spiral into acute kidney injury fast. Defend muscle mass with resistance training two or three sessions a week and adequate protein for your kidney stage. The one absolute contraindication: personal or first-degree family history of medullary thyroid carcinoma or multiple endocrine neoplasia. JOIN THE NEWSLETTER for weekly evidence-based kidney, metabolic, and longevity research: https://selfprinciple.org/newsletter Learn more about Dr. Sean Hashmi and SELFPrinciple.org, a 501(c)(3) nonprofit: https://selfprinciple.org CONNECT YouTube: https://youtube.com/@SeanHashmiMD Instagram: https://instagram.com/seanhashmimd DISCLAIMER The information in this content is for educational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have seen in this content. The views expressed here are my own and do not represent the views of my employer or any affiliated institution. Never start, stop, or change the dose of any prescription medication without consulting your physician.