TopicsSupplements and minerals
Metformin
For longevity and mitochondrial medicine
The experts are split on this. Both sides are here.
The panel is split; metformin’s benefits for longevity are debated and support is thin so far.
Who is behind it
Voices including a nutritional sciences PhD, a board-certified cardiologist and a former research biochemist.
How strong the research is
Backed by some published research, and by what the experts see in practice.
In their words
“I'm not gonna lie to him and tell them that taking metformin or or you know using melitan on their skin or you know some MLM marketing scheme is the way to go that's it's total”
a molecular biology PhD
Some drugs have positives that generally outweigh negatives and can fill gaps in treatment when combined with diet and lifestyle.
a former research biochemistsponsoredMetformin depletes vitamin B12 and folate leading to symptoms like numbness and fatigue.
With care
Some of the minds attach conditions. These are worth reading before you begin.
If lifestyle alone does not reduce visceral fat, medications such as metformin may have benefit.
Metformin, a diabetic medication, is becoming popular for anti-aging but is not universally recommended yet.
Studies show metformin with aerobic exercise undid insulin sensitivity and mitochondrial benefits and decreased muscle gain with strength training.
Where they disagree
Both sides
For
Some drugs have positives that generally outweigh negatives and can fill gaps in treatment when combined with diet and lifestyle.
a former research biochemistAgainst
Both inhibit complex one of the respiratory chain and can exacerbate symptoms severely
a nutritional sciences PhDCredible minds land on different sides here. Read both, notice how it suits you, and talk it through with your clinician.
More on the other side
Metformin was essentially equal to placebo in preventing chronic disease over 21 years. a licensed naturopathic doctor
Talk it through
Entrain shows what the experts teach, so you can make better decisions with your own clinician. It does not diagnose or prescribe. If something is worrying you, start there.
How this reading was made
Every line here comes from a doctor, scientist or coach speaking publicly, and links to the moment they said it. Entrain listens for where independent experts arrive at the same place on their own, and shows where they part ways. Backed by some published research, and by what the experts see in practice.
Some statements come from sponsored segments or people speaking about their own products. They are marked where they appear and count for less. Last refreshed 23 September 2026.
The research beneath it
- Efficacy of berberine in patients with type 2 diabetes mellitus.Metabolism: clinical and experimental, 2008
Keep exploring supplements and minerals
The experts are split
Vitamin D supplement
The panel is split; natural sun is preferred over supplements for vitamin D.
The experts are split
Leucine
The panel is split; whole protein sources are usually preferred over leucine alone.
The experts are split
Nicotine
The panel is split on nicotine; some see cognitive benefits, others caution about risks.
The experts are split
Iron supplements
Our sources steer away from iron supplements unless a true deficiency is confirmed by testing.
The experts agree
Chamomile
Use chamomile to calm the nervous system, aid digestion, and promote restful sleep.
The experts agree
Collagen peptides
Collagen peptides are a gentle add-on for skin, joints, and recovery.