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How does metformin affect mitochondria at normal doses and is the damage reversible?
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General Health
Question #29869
38 days ago
85

How does metformin affect mitochondria at normal doses and is the damage reversible? - #29869

Pawan

Does anyone know how metformin destroys mitochondrias at normal doses. Because metformin inhibits mitochondrias electric potential by its positive charge. Is it reversible ?

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Dr. Bharat Joshi
I’m a periodontist and academician with a strong clinical and teaching background. Over the last 4 years and 8 months, I’ve been actively involved in dental education, guiding students at multiple levels including dental hygienist, BDS, and MDS programs. Currently, I serve as a Reader at MMCDSR in Ambala, Haryana—a role that allows me to merge my academic passion with hands-on experience. Clinically, I’ve been practicing dentistry for the past 12 years. From routine procedures like scaling and root planing to more advanced cases involving grafts, biopsies, and implant surgeries. Honestly, I still find joy in doing a simple RCT when it’s needed. It’s not just about the procedure but making sure the patient feels comfortable and safe. Academically, I have 26 research publications to my credit. I’m on the editorial boards of the Archives of Dental Research and Journal of Dental Research and Oral Health, and I’ve spent a lot of time reviewing manuscripts—from case reports to meta-analyses and even book reviews. I was honored to receive the “Best Editor” award by Innovative Publications, and Athena Publications recognized me as an “excellent reviewer,” which honestly came as a bit of a surprise! In 2025, I had the opportunity to present a guest lecture in Italy on traumatic oral lesions. Sharing my work and learning from peers globally has been incredibly fulfilling. Outside academics and clinics, I’ve also worked in the pharmaceutical sector as a Drug Safety Associate for about 3 years, focusing on pharmacovigilance. That role really sharpened my attention to detail and deepened my understanding of drug interactions and adverse effects. My goal is to keep learning, and give every patient and student my absolute best.
38 days ago
5

Hello dear See metformin causes lactic acidosis in higher concentration Usually the damage is not irreversible On stopping the medication improvement is observed Mitochondria being pleuropotent in nature will recover soon after stopping of medication Regards

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Metformin’s effects on mitochondria primarily involve the inhibition of complex I of the electron transport chain. This action decreases the mitochondrial respiratory capacity and results in a reduction in ATP production, subsequently increasing AMP levels. The increased AMP:ATP ratio activates AMP-activated protein kinase (AMPK), a cellular energy sensor. Through AMPK activation, metformin indirectly influences glucose uptake and utilization, underpinning its efficacy in treating type 2 diabetes by improving insulin sensitivity. The concern about “destroying” mitochondria might be overstated for standard therapeutic dosages used in the treatment of diabetes. While it’s true that metformin can reduce mitochondrial activity, this is generally to a degree that is therapeutic and not damaging, under normal dosing conditions prescribed by physicians. In terms of reversibility, studies suggest that the mitochondrial inhibitory effects of metformin are, in fact, reversible. After withdrawal of the medication, mitochondrial function tends to return to baseline levels. However, the nuances of these effects can vary between individuals, based on factors like kidney function, as impaired renal clearance can increase the drug’s action. For patients taking metformin within prescribed dosages, monitoring kidney function is standard to ensure safety. If there are symptoms or concerns such as fatigue or muscle weakness, these should be discussed with a healthcare provider to consider any necessary adjustments. Keeping regular follow-ups with your healthcare provider is essential to address any adverse effects and to ensure that the treatment remains both safe and effective.

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