Carnosine is one of the most promising bioactive molecules today. Recent research, including clinical studies published in 2025, confirms its significant antioxidant, anti-inflammatory, anti-glycation, neuroprotective and metabolic effects. Clinical data suggest a positive effect on cognitive function, glucose regulation, quality of life and protection of cells against ageing. This article provides an overview of the most important scientific findings and explains why carnosine is considered one of the key molecules in modern preventive medicine.
Carnosine (β-alanine-L-histidine) is an endogenous dipeptide that occurs naturally in high concentrations in skeletal muscle, heart and brain. Over the past decade, it has been intensively studied for its multimodal biological effects, which interfere with several fundamental mechanisms of ageing and the development of chronic diseases.
Unlike traditional antioxidants, carnosine does not act in a unidirectional manner. It is characterised by its ability to influence oxidative stress, inflammation, glycation processes, glucose metabolism, protein stability and neuron protection – and it is this combination that makes it an exceptional nutraceutical tool.
One of the main mechanisms of action of carnosine is its ability to:
AGEs are among the main factors contributing to cellular ageing and the development of complications in diabetes, neurodegeneration and cardiovascular diseases. Carnosine thus acts as a protector of cells against biological wear and tear.
These properties have led to carnosine being labelled a potential geroprotective factor – a molecule that slows down the functional manifestations of ageing.
Clinical data from 2025 show that carnosine supplementation at a dose of 2 g per day for 12 weeks in healthy young adults:
Mechanistically, this effect is explained by a reduction in neuroinflammation, stabilisation of neuronal membranes, and protection of nerve cells from oxidative damage and protein aggregation.
On the other hand, results were less consistent in populations with prediabetes or type 2 diabetes, highlighting the importance of the individual metabolic environment.
In a clinical study in individuals with prediabetes and early type 2 diabetes, carnosine supplementation:
These effects are due to carnosine’s anti-glycation activity, its anti-inflammatory properties, and its positive influence on insulin signalling. Carnosine thus appears to be a promising tool in the prevention of metabolic syndrome.
A 2025 meta-analysis focusing on histidine-containing dipeptides (including carnosine) shows:
These effects are likely mediated by a combination of neuroprotection, reduction of inflammation, and improvement of cellular energy metabolism.
Not all studies confirm clear benefits. In some groups, no significant changes in body composition or muscle strength were observed. This points to the fact that the effect of carnosine depends on the dose, duration of supplementation, health status and individual biochemistry.
Carnosine is one of the most complex and promising bioactive molecules in modern preventive medicine. Scientific evidence from 2025 confirms its significant effects in the areas of cell protection, cognition, metabolic health, and quality of life. Although research is ongoing, it is already clear that carnosine is one of the fundamental pillars of long-term biological stability in the body.
