Dr Sarah Martinez ad creative
Dr Sarah Martinez
Dr Sarah Martinez

Active· since Apr 28, 2026

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I'm a cardiologist. I ran a 60-day experiment on myself with beetroot to see if it could lower my own blood pressure without medication. Here are the actual numbers. I've been a practicing cardiologist for 26 years, and high blood pressure is the single most common thing I treat. I've sat across the desk from thousands of patients and explained the same things over and over. The morning headaches at the base of the skull. The dizziness when you stand up too fast. The cuff anxiety that spikes your numbers the second you walk into the office. I've watched patients break down in my exam room because their numbers won't move no matter what they do. About 3 years ago, it happened to me. I'm 57. My readings started climbing out of nowhere. First borderline, then Stage 1, then Stage 2. All those years of 14-hour days, hospital cafeteria food, sleeping 5 hours between on-call nights. It finally caught up with me. At first it was one bad reading at my own physical. I figured the cuff was off. Then I started checking it at home and the numbers were 148 over 94 in the morning. 152 over 96 after lunch. I couldn't get them under 140 no matter what I did. Then came the headaches. Mornings mostly, right at the back of the skull, the kind that makes you nauseous. I'd take my reading first thing and the number would set the mood for my whole day. If it was 145, I was anxious. If it was 155, I was terrified. The same cuff anxiety I tell my patients to ignore, I now had myself. I started checking my BP 6, sometimes 8 times a day. The irony wasn't lost on me Now I was the patient. Every single one of them was right. My PCP wanted to start me on lisinopril. 10mg to start. I told her I'd think about it. But I knew I wasn't going to take it. I prescribe lisinopril, amlodipine, and hydrochlorothiazide every single day. I also see what they do to people. The dry cough from lisinopril that wakes my patients up every night. The swollen ankles from amlodipine that turn their shoes into vises by 3 PM. The constant bathroom trips from HCTZ that leave them exhausted no matter how much water they drink. And the worst part? Half my patients are on TWO of these and their numbers are STILL creeping up. My own mother died of a stroke at 71. She'd been on lisinopril, then amlodipine, then HCTZ on top, for almost 20 years. I'm a cardiologist and I couldn't save her. I wasn't doing that to myself. So I did what I tell every patient to do first. I cut salt to under 1500mg a day, followed the DASH diet to the letter, and walked 45 minutes every morning before clinic. My numbers dropped 6 points. I was still sitting at 142 over 90 most mornings. I tried beetroot too. The literature on dietary nitrates and blood pressure is solid, I've recommended it to patients for years. I bought a powder from Amazon, the one with all the 5-star reviews. Drank it every morning for 6 weeks. Numbers didn't move. T ried beetroot gummies from the supermarket. Same result. I figured my own physiology must just be too far gone for nitrates to make a difference. Then about 2 months ago, one of my regular patients came in for her follow-up. Sweet woman, 67, has had Stage 2 hypertension for over a decade. She'd been on lisinopril and HCTZ for years and her numbers were still creeping up. But this time her chart looked different. Her morning reading was 124 over 78. I almost asked her if we'd pulled the wrong file. I asked her what she was doing differently. She got a little sheepish and said "Doctor, I added something on my own. I didn't want to bother you about it." I told her she could bother me about it. She pulled a bottle of beetroot capsules out of her purse and said this was the only thing that had moved her numbers. Then she said "I tried to tell my friend Susan about it but the cheap kind doesn't work, you have to get the right one." I'll be honest, I was very skeptical. Patients bring me supplements every week and 99% of them are nonsense. But her chart was right there in front of me, and I knew her well enough to know she wasn't faking it. That night my reading was 151 over 94. I sat at the kitchen counter feeling defeated. So I got out my laptop and went deeper into the literature than I had in years. Here's the mechanism, in plain language. The active compound in beetroot is dietary nitrates. Your body converts them into nitric oxide, which signals your blood vessels to relax and open up. When the vessels open up, blood flows easier and pressure drops. That's the whole pathway. The clinical studies that actually showed beetroot lowering blood pressure used 300 to 500 milligrams of nitrates per day. Then I went and looked at the bottle of beetroot powder I'd been taking. 80mg of nitrates per serving. The gummies I'd tried? Around 50mg. The clinical studies used 4 to 10 times that. No wonder I wasn't seeing results. I kept reading. The bigger problem isn't even the dose, it's the processing. Most beetroot supplements are spray-dried at over 200°F to turn them into powder. That heat destroys most of the nitrates before the powder ever gets bottled. So even when a label says "1,000mg of beetroot," the actual active compound inside is mostly dead by the time you swallow it. I'd been recommending beetroot to my patients for years and I'd never actually checked the dosing or extraction method on the brands they were buying. None of them were getting close to the clinical dose. None of us were. I started looking for any beetroot supplement that was: ✅ Cold extracted, not heat processed (so the nitrates survive) ✅ At least 300mg of dietary nitrates per serving (the bottom of the clinical range) ✅ Third-party tested with a published Certificate of Analysis (an outside lab confirms what's actually in the bottle) I kept seeing the same brand mentioned over and over in the reviews. BeetWise. The same one in my patient's purse. I ordered it. It was more expensive than the powder and the gummies I'd tried. At that point I didn't care. When it arrived, I checked the COA on their site first. 400mg of dietary nitrates per serving, verified by an outside lab. Cold extracted, no spray drying, no fillers. Capsule form, which I appreciated since I was tired of the earthy powder taste. I took my first dose with breakfast that Monday morning. The first week, my morning reading dropped to 138 over 89. Lower than it had been in months but I didn't trust it. I checked three times. By week 2, I was averaging 132 over 85. The morning headaches stopped. I noticed I wasn't reaching for coffee at 2 PM anymore. My energy was steady all day. By day 30, I was at 126 over 82. Stage 1, barely. I started checking my BP twice a day instead of 8 times because I wasn't dreading the number anymore. At day 60, I checked it three times in a row to make sure: 122 over 79. For the first time in 3 years, I was in the normal range without any medication. I sat at the kitchen counter and cried. I'm a cardiologist. I treat hypertension every day. And nothing I'd done for 3 years had moved my own numbers like this. That morning headache that used to set the mood for my whole day? Gone. The cuff anxiety that had me checking 8 times a day? Mostly gone, I take my reading once in the morning and once before dinner now and that's it. I sleep through the night without waking up worried about my heart. When I went back to my PCP at the 3-month mark, she pulled up the readings, looked at me, and said "we don't need to talk about lisinopril anymore." She actually asked what I was taking so she could mention it to a few of her own patients. I've quietly mentioned BeetWise to 12 of my own patients with hypertension since then. The ones who've followed through have all come back with better numbers. One woman who'd been on lisinopril and amlodipine for 8 years was able to drop the amlodipine entirely under careful monitoring. She told me she hasn't had to wear loose shoes in 6 months. Look, for almost 3 years I thought I had two options. Take the meds I prescribe every day and deal with the side effects, or watch my numbers slowly creep up until I had a stroke like my mother. As a cardiologist, I knew exactly where the second road ended. I was wrong about the first option being my only alternative. And here's something I wish I'd understood sooner. Not all beetroot is the same. I wasted 6 weeks on cheap brands that did nothing. BeetWise's cold-extracted, 400mg, third-party-tested formula is the only one that actually moved my numbers. If my patient hadn't pulled that bottle out of her purse, I'd still be checking my reading 8 times a day, dreading the headache I knew was coming, putting off the lisinopril conversation with my PCP. I'm sharing this because I hope it helps someone else. After 26 years as a cardiologist, I thought I knew every option for blood pressure. Turns out, my patient knew something I didn't. Here's where I got mine: 👉 https://zenther.co/pages/listicle (They're running a sale right now. I just ordered 3 more bottles.) ~ Dr. Sarah Martinez. P.S. A few things I wish I'd known before I ordered: When I first ordered BeetWise, I didn't know they had a 90-day money-back guarantee. If your numbers don't move, you get a full refund. No questions asked. I wish I'd known that earlier. Would have saved me 6 weeks on the cheap brands that did nothing. Most people order at full price, but right now they're running a discount that knocks the cost down significantly. That's how I was able to grab 3 bottles at once. The catch is BeetWise is a small operation. Cold extraction takes about 4 times longer than spray drying, and they only use one third-party tested supplier of beets. They sell out often. I've had patients message me asking if it's back in stock yet. I want to apologize in advance because when you click below, you might see they're sold out. If they are, the email signup notifies you the second a new batch is ready. If you've been dealing with creeping numbers, morning headaches, the cuff anxiety, or you're trying to avoid lisinopril and HCTZ the way I was, I'd grab a bottle before they're gone. I went from 148 over 94 down to 122 over 79 in 60 days. As a cardiologist, those are the kinds of numbers I'd usually only see on patients we'd put on medication. If there's even a chance this could work for you, it's worth trying. 👉 Check if BeetWise is in stock here: https://zenther.co/pages/listicle

Have Hypertension? Read This

Zenther Beetwise, 400mg verified nitrates per serving not 5mg like most brands. Cold-extracted beetroot supplement with published lab results. 90-day guarantee. Try BeetWise today.

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