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If your A1C is high and your feet have started tingling, I'm writing this for you specifically. Because I was you two years ago and nobody told me what was coming. My name is Marcus. I'm 64. Diagnosed Type 2 four years ago with an A1C of 9.1. First thing my doctor said: "We need to get that number down. That's our only focus right now." So for two years, that's all I thought about. The number. I took my Metformin. I changed my diet. I came in every three months and watched that number slowly drop. 8.7. 8.1. 7.6. 7.1. 6.8. My doctor would shake my hand. "Excellent work, Marcus. Excellent work." But about eight months in, something started in my feet. Just a faint buzz at night. Like a phone vibrating under the mattress. I mentioned it at my next appointment. "That's expected at your glucose levels," he said. "It'll improve as your A1C comes down." So I trusted him. Kept focusing on the number. But the buzzing didn't stop when the numbers improved. It got worse. Buzzing became tingling. Tingling became burning. Burning started waking me up at 3 in the morning. I went back. I said the A1C is down but my feet are getting worse, not better. He sent me to a neurologist. Peripheral neuropathy. Moderate to severe in both feet. I sat there and said — how? My numbers have been dropping for two years. How do I have moderate to severe nerve damage? And the neurologist looked at me in a way I'll never forget. Not surprised. Not alarmed. Just... tired. Like he'd had this conversation a hundred times and was exhausted by it. "Nerve damage from prolonged high glucose is cumulative," he said. "The damage from when your A1C was at 9, 8, 7 — that doesn't stop the moment your numbers improve. Those nerves were starving. Some of that damage is done." I drove home and I just sat in my driveway for I don't know how long. Two years. I did everything right for two years. Hit every target. And my nerves were still dying the whole time. I thought about my father. He was diabetic for 22 years. A1C was always between 8 and 10 — doctors were always chasing it down, never quite catching it. Year 4: feet started tingling. They told him it was part of the disease. Year 9: burning bad enough he stopped sleeping through the night. Year 14: couldn't feel his feet. Started on gabapentin. Year 18: fell down the stairs. Couldn't feel the last step. Shattered his knee. Year 22: wheelchair. Both legs partially amputated below the knee. His A1C at the very end? 6.9. Finally under control. No legs. I wasn't going to be my father. I refused. So I went home and I started researching everything I could find. Not the stuff my doctor told me. The actual science. What high blood sugar does to nerves at the cellular level. And I found something that made me furious. Two things are happening when your A1C is elevated. First — high blood sugar damages the tiny capillaries that feed your nerves. The nerve gets cut off from its blood supply. It starts to starve. First it misfires — that's the tingling, the burning, the electric shocks. Then it goes quiet — that's the numbness. Then it's gone. That part I sort of knew. But the second thing — nobody told me this. Metformin depletes B12. It's in the prescribing information. Has been for years. "Long-term use may result in vitamin B12 deficiency." B12 is what maintains the myelin sheath. The protective coating around every nerve fiber in your body. Think of your nerve like a wire. Myelin is the rubber insulation. High blood sugar is cutting off the wire's blood supply from the outside. Metformin is stripping the insulation from the inside. Both. At the same time. And nobody mentioned it to me once in two and a half years on Metformin. I called my neurologist when I found this. I asked him — did you know Metformin depletes B12? Did you know B12 is what maintains the myelin around nerves? He said yes. B12 deficiency is a known side effect. I said — then why wasn't I tested? Why wasn't I told to supplement from day one? He said "it's something we should monitor." Should. Not "we were monitoring." Should. I got my B12 tested the next week. 187 pg/mL. Normal starts at 300. I had been severely deficient. For who knows how long. And nobody had checked once in two and a half years. I went straight to the pharmacy and bought B12 supplements. Took them every day for six weeks. Got retested. 187. Exact same number. Didn't move at all. Because here's the thing — after 50, your stomach acid has dropped by about 40%. Oral B12 gets destroyed before it ever reaches your blood. The pills are basically useless. I was swallowing them every day and they weren't doing a thing. That's when I found out about sublingual delivery. Under the tongue. Directly into the bloodstream. No stomach acid involved. And not just any B12 — methylcobalamin specifically. The active form your body actually uses. Most supplements use cyanocobalamin — the cheap version that your liver has to convert. After 50 your liver can't do that conversion properly anymore. I found a study. Type 2 diabetics with neuropathy. Given 5,000mcg sublingual methylcobalamin daily for six months. Nerve conduction improved. Pain reduced 68%. Sensation returned in areas that had gone numb. Not because their blood sugar changed. Because their nerves finally got the B12 they'd been starved of. I also learned it's not just B12 alone. You need the full B-complex working together. B1 for nerve energy. Diabetics are almost always depleted. B6 to stop the misfiring — the burning, the shocks. B3 to improve circulation to the tiny capillaries feeding your nerves. B9 for myelin synthesis — actually helping rebuild the insulation. All sublingual. All in the forms your body can actually use after 50. I tried a couple of products. First one only had B12, no complex — slight improvement but stalled out fast. Second had the right ingredients but used the wrong form of B12. Didn't do much. Then I found a thread in a diabetes forum. Bunch of people with diabetic neuropathy specifically. Multiple people kept coming back to the same brand. Nuvel. Sublingual liquid. Full B-complex. 5,000mcg methylcobalamin. Thiamine, pyridoxine, niacin, folate. Third-party tested. I ordered it. More expensive than what I'd been trying but honestly I didn't care anymore. Week 2: slept through the night twice. First time in over a year. The 3am burning just... didn't wake me up. Week 4: the constant background buzz during the day got quieter. Still there. But like someone turned the volume down a little. Week 6: I walked into my bathroom and felt the new rug my wife had put down. Felt the fibers under my feet. I stood there for a full minute just feeling it. I almost cried right there in the bathroom. Week 10: walked around the full block for the first time in months. Came home and sat on the porch and thought about my father. Week 12: nerve conduction test. Previous results: 31 meters per second. Severely abnormal. Normal is 45–50. New results: 39 meters per second. The technician looked at the screen twice. "This shows improvement. Diabetic neuropathy doesn't usually change like this." My neurologist wrote in my chart: "Patient reports significant reduction in neuropathic symptoms. Nerve conduction velocity shows measurable improvement." That was 11 months ago. My A1C today is 6.6. Still working on bringing it down further. Not perfect. But I sleep through the night. I walk without pain. I can feel the floor under me. The burning is maybe 20% of what it was at its worst. And I finally understand what was happening to me. The blood sugar was damaging my nerve's blood supply. The Metformin was depleting the B12 my nerves needed to repair themselves. Both happening at the same time. For years. While every appointment we talked about one number and called everything else "expected." It wasn't expected. It was preventable. If you're reading this and your A1C has been elevated — if you've been on Metformin for a year or more — please get your B12 tested. Today if you can. I would bet money it's low and nobody has checked it. And if your feet have already started — any tingling, any buzzing, any burning, any numbness, anything at all — the window to reverse this is open right now but it doesn't stay open. My neurologist told me something I keep coming back to: "Nerves can regenerate. But only while enough fiber is still alive to rebuild from. Once the nerve is completely dead, nothing brings it back." I caught mine in time. My father didn't. Don't wait for the next appointment. Don't wait until the burning is waking you up every night. Don't wait until you're where my father ended up. Grab Nuvel. Take it every morning alongside your Metformin. Let the Metformin do its job on blood sugar. Let Nuvel replace what the Metformin has been stealing from your nerves. Both problems. Addressed together. That's the only way forward. I wish someone had told me this four years ago the day I was diagnosed. Instead I found it too late to undo what was already done. But not too late to stop what was still coming. You might still be in that place. Where there's still time to protect what hasn't been damaged yet. Don't waste it. 👉 Check if Nuvel is in stock: https://trynuvel.com/pages/nerve-repair P.S. — A few things I want you to know: 90-day money-back guarantee. If your symptoms aren't better after 12 weeks, you get every dollar back. No questions. They're running a discount right now. That's how I stocked up on three bottles at once. It's a small company and word spreads fast in the diabetes forums. I've seen it sell out. Don't wait. If your A1C has been elevated and you're on Metformin — especially if any symptoms have started — please just try it. I went from 3 am burning and nerve conduction of 31 m/s to sleeping through the night and 39 m/s in 12 weeks. My father lost his legs because nobody told him any of this. You know now 👉 https://trynuvel.com/pages/nerve-repair