Does David Sinclair recommend Berberine?
David Sinclair recommends Berberine in some contexts, but has also raised cautions.
Published research rates it moderate evidence. Of David Sinclair's 19 tracked claims, 14 are supported or partially supported by studies on PubMed.
Evidence last reviewed May 2026
David Sinclair on Berberine — 19 claims
“this one's really interesting because it's a natural and commonly available one that you can try at home. Of course, talk to your doctor first though.”
Berberine is a natural and commonly available supplement that can be tried at home, though one should talk to their doctor first.
The research evidence confirms that berberine is a naturally derived supplement with documented effects on metabolic parameters including glucose, lipids, and obesity indices, as demonstrated across m…
“This is a molecule from the plant world, bark and roots. You can find it's yellow substance. Again, it's fairly insoluble. So you if you want to take it, take it with some food, yogurt, olive oil, this kind of stuff.”
Berberine is a molecule derived from the plant world (bark and roots), is a yellow substance, and is fairly insoluble, so it should be taken with food such as yogurt or olive oil.
The claim that berberine is derived from plant bark and roots and is a yellow-colored isoquinoline alkaloid is consistent with background information in the reviews present (e.g., PMID 36561763 descri…
“So I think it's likely to be good.”
Sinclair thinks berberine is likely to be good based on animal data.
Sinclair's hedged claim that berberine is 'likely to be good based on animal data' is partially supported by the available evidence, though notably the published research provided includes substantial…
“there's a natural version of metformin, which is known as berberine, which has a lot of clinical data as well, that um has benefits as well, including lowering of blood glucose.”
Berberine is a natural alternative to metformin that works on some of the same pathways, specifically activating AMPK, and has clinical data supporting benefits including lowering of blood glucose.
The claim that berberine lowers blood glucose is directly supported by the RCT (PMID 18442638), which found berberine comparable to metformin (0.5g three times daily) in glycemic control in 36 newly d…
“There are some human studies that exist, clinical trials showing that it increases insulin sensitivity. You have to take high doses.”
Human clinical trials show that berberine increases insulin sensitivity, but it requires high doses.
The claim that berberine improves insulin sensitivity is supported by multiple studies in the evidence base. The RCT (PMID: 18442638) demonstrated berberine's hypoglycemic efficacy comparable to metfo…
“Yeah, the clinical studies, it's at least a gram. There's one that worked with 2 g, but it does seem to work just like Metformin in improving the body's sensitivity to insulin and lowering the blood glucose levels”
Clinical studies on berberine use at least 1 gram per day, with one study using 2 grams per day, and it improves insulin sensitivity and lowers blood glucose levels.
The claim that clinical studies use berberine at doses of at least 1 gram per day is supported by PMID 18442638, an RCT in type 2 diabetes patients that used 0.5g three times daily (1.5g/day), and PMI…
“In mice, berberine will extend the lifespan of mice treated with chemotherapy and have a pretty big lifespan extension of normally aged mice. That's also true in fruit flies.”
Berberine extends the lifespan of mice treated with chemotherapy and produces substantial lifespan extension in normally aged mice, as well as in fruit flies.
None of the 20 published research summaries provided address lifespan extension in mice treated with chemotherapy, lifespan extension in normally aged mice, or longevity studies in fruit flies (Drosop…
“anti type two diabetes. does have wonderful effects and in some clinical trials on dozens of people that's being tested.”
Berberine has anti-type-2-diabetes effects and wonderful effects shown in some clinical trials on dozens of people.
The claim that berberine has anti-type-2-diabetes effects is directly supported by multiple studies in the evidence base, including an RCT (PMID: 18442638) comparing berberine to metformin in 36 newly…
“it to rats and mice and seen that they are very healthy, especially on a high-fat diet.”
Berberine has been given to rats and mice with results showing they are very healthy, especially on a high-fat diet.
The expert's claim specifically references animal (rat and mouse) studies showing berberine's benefits, particularly on high-fat diets. None of the 20 published research summaries provided above inclu…
“berberine does have some of the similar side effects of Metformin. We don't know different groups of people might be different, but you're looking at diarrhea, constipation, gas, potentially upset stomach.”
Berberine may share some of the same gastrointestinal side effects as metformin, including diarrhea, constipation, gas, and potentially upset stomach.
The provided research does not directly and systematically document berberine's GI side effect profile (diarrhea, constipation, gas, upset stomach) in a way that explicitly mirrors metformin's profile…
“kind of get a headache, like almost hypoglycemic”
Berberine can cause near-hypoglycemic effects such as headaches.
The RCT by Zhang et al. (PMID: 18442638) demonstrated that berberine has hypoglycemic efficacy comparable to metformin in type 2 diabetes patients, which mechanistically supports the possibility of ne…
“it's been remarkable what's been found in animals and even in people that it can mimic the effects of Metformin. Specifically, what it does is it again it binds... the activation of AMPK and increased mitochondrial energy”
Berberine has been found in animals and human studies to mimic the effects of metformin, activating AMPK and increasing mitochondrial energy.
The provided literature supports berberine's metabolic effects (glucose and lipid lowering) in human RCTs, including a pilot RCT (PMID: 18442638) comparing berberine directly to metformin at 0.5g thre…
“if I took berberine, it works very similarly of the AMPK pathway and the mTOR pathway, et cetera, in particular carbohydrates”
Berberine works very similarly to Metformin via the AMPK pathway and the mTOR pathway, particularly regarding carbohydrates.
The RCT by Zhang et al. (PMID: 18442638) directly compared berberine to metformin in type 2 diabetes patients, finding comparable hypoglycemic efficacy, which supports functional similarity between th…
“energetics in the body, just like AMPK and Metformin does.”
Berberine affects energetics in the body just like AMPK and Metformin do.
The provided literature supports berberine's functional similarities to metformin in glucose and lipid metabolism. The RCT (PMID: 18442638) directly compared berberine to metformin (0.5g three times d…
“if I took berberine, it works very similarly of the AMPK pathway and the mTOR pathway, et cetera, in particular carbohydrates, and kind of get a headache, like almost hypoglycemic.”
Berberine works on the AMPK pathway and the mTOR pathway and particularly affects the metabolism of carbohydrates, and taking it can cause a feeling similar to hypoglycemia.
The claim that berberine activates AMPK and affects carbohydrate metabolism is mechanistically plausible and consistent with findings from multiple RCTs and reviews in the provided literature. The RCT…
“had access to Metformin, I was taking berberine. poor man's Metformin.”
Sinclair personally took berberine when he did not have access to Metformin, describing it as a 'poor man's Metformin.'
The claim that berberine functions similarly to Metformin has some biological basis in the literature. The RCT (PMID: 18442638) directly compared berberine to Metformin (0.5g three times daily) in 36…
“there are two of choice, and I cycle between them. Serena and I do that.”
Sinclair cycles between metformin and berberine personally, along with Serena (his co-host).
The expert's claim is a personal anecdote about his own behavior (cycling between metformin and berberine), not a scientific assertion about efficacy or safety. The published research provided covers…
“if ever, I'm going to overeat like a Thanksgiving meal or something, I take berberine, those were his words.”
An acquaintance (Ori) reported taking berberine before a large meal like Thanksgiving to manage overeating.
The claim is an anecdotal passing mention about an individual taking berberine before a large meal to manage overeating — a very specific real-world use case not directly studied in the provided liter…
“He said, if ever, I'm going to overeat like a Thanksgiving meal or something, I take berberine, those were his words.”
Ori Hofmekler reportedly takes berberine before overeating (e.g., a Thanksgiving meal) to blunt the effects of consuming large quantities of food.
The claim is a passing anecdote about a specific individual (Ori Hofmekler) using berberine acutely before overeating to blunt metabolic effects of a large meal. None of the provided studies examine t…
Other supplements David Sinclair discusses
Claims are extracted from publicly available podcasts and videos, attributed to their source, and compared against PubMed research. This is educational information only — consult a healthcare provider before starting any supplement.
Back to David Sinclair