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Nesfatin-1

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By The Health Stacks Research TeamUpdated September 15, 2026

Nesfatin-1 is a tiny protein made naturally in the body, mostly in the brain and stomach. It was first found in 2006 inside a bigger protein called NUCB2. Scientists study it a lot because it acts like a signal to tell the body it is full. It helps control how much food animals eat and how they use energy. It is not a medicine you can buy at a store, but researchers look at it to understand hunger and weight problems.

This protein works by turning down the desire to eat, even when food is very tasty. It does this by affecting specific brain cells that use a chemical called dopamine, which is linked to rewards. Besides controlling hunger, it also helps manage blood sugar and fat in the body. Some studies show it can make the body burn fat better and improve how insulin works. This makes it very interesting for studying diseases like diabetes and obesity.

There is still a lot we do not know about how this protein works in humans. Most of the research so far has been done in rats and mice. We do not know exactly how it binds to cells or what the right dose would be for people. While it seems safe in animal studies, we do not have enough data to say it is safe for humans to use as a supplement. It is a strong signal in the body, and changing its levels could have unexpected effects on the heart or brain.

Research-stageEarly-stage — evidence so far is mostly cell, animal, or preliminary human studies. Not an approved medicine. Verified confidence80–100 — backed by strong, well-corroborated sources (peer-reviewed research, clinical guidelines). Our highest confidence tier.

Benefits

What Nesfatin-1 Helps With

The benefits people report — backed by research.

Weight management (6)

Weight management 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 srcReduces food intake and induces satiety 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces motivational and rewarding value of food 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Regulates food intake as an anorectic peptide 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Anorectic effects acting at central level independent of leptin signaling 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Promotes lipolysis and reduces lipid accumulation in adipose tissue 80/100Rated 80/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →

Glycemic & metabolic (5)

Insulin sensitivity 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Improves lipid disorders and normalizes plasma free fatty acid levels 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Diagnostic biomarker for Type 2 Diabetes Mellitus 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Differentiates newly diagnosed T2DM patients from healthy subjects 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Regulates blood glucose levels 70/100Rated 70/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →

Cardiovascular & vascular (3)

Protects against cardiac ischemia/reperfusion injury 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Angiogenesis 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Regulates cardiac functions 70/100Rated 70/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →

More reported benefits (6)

Energy metabolism 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Suppresses hedonic feeding via negative modulation of dopaminergic neuron activity 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Gastric / gut lining 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Stimulates testosterone secretion from Leydig cells in vitro at 1 ng/ml 80/100Rated 80/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Plays a role in regulating the reproductive axis in male rats 80/100Rated 80/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduction of hepatocyte lipid accumulation 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →

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Safety

Known Side Effects

Adverse effects reported in the research and by community use.

  • Decreased serum FSHModerate 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ doi.org
  • Decreased hypothalamic GnRH and Kiss1 mRNA expressionModerate 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ doi.org
  • and testosterone levels in vivoModerate 85/100Rated 85/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
  • Increased arterial pressureModerate 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ doi.org
  • VasoconstrictionModerate 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ doi.org

Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.

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