Taurine: What It Is, Benefits and How to Take

Taurine is an amino acid naturally present in the body and in various foods of animal origin. Although it is not used in protein synthesis, it plays several important functions in the normal functioning of different tissues, including the heart, muscles, brain, and retina.

What is Taurine?

Taurine is an amino acid that the body produces naturally. Unlike most amino acids, it is not used to build proteins, but it participates in various important physiological processes, including fluid balance, muscle function, nerve transmission, and bile salt formation.

What are the main food sources of Taurine?

The main food sources of taurine include:

• Meat (beef, pork, and poultry);
• Fish and seafood (such as shrimp and other shellfish);
• Milk and dairy products;
• Eggs;
• Offal, such as liver and heart.

Taurine is found only in very small quantities in plant-based foods, so people following vegetarian or vegan diets tend to have a lower intake.

What are the health benefits of Taurine?

Taurine has been widely studied due to its diverse physiological functions. Although many of its potential benefits are still being investigated, the following stand out:

Cardiovascular health

Taurine participates in the normal function of muscle cells and has been studied for its possible role in maintaining blood pressure, heart function, and lipid metabolism.

Antioxidant properties

Studies suggest that taurine can help protect cells from oxidative stress and modulate inflammatory processes.

Eye health

The retina has high concentrations of taurine. Research has studied its possible role in maintaining eye health and protecting retinal cells.

Physical performance

Taurine has been used in studies related to physical exercise, suggesting a possible benefit in muscle function, physical endurance, and recovery after exercise.

Nervous system

Taurine participates in neurotransmission and the regulation of neuronal activity. Its potential role in neurological health and cognitive function continues to be investigated.

Liver health

Some studies suggest that taurine may exert a protective effect on liver cells in certain situations of metabolic stress.

Glucose metabolism

Research has studied taurine for its possible role in insulin sensitivity and glucose metabolism, although more human studies are needed.

Healthy aging

Recent experimental studies have raised interest in the possible role of taurine in healthy aging. However, these results still need confirmation in larger clinical studies.

Who might benefit from Taurine supplementation?

Some specific groups may benefit from supplementation, namely:

• Vegetarians and vegans;
• Older adults, whose taurine levels tend to decrease with age;
• Athletes and intense exercisers;
• People with reduced intake of animal-derived foods;
• People with increased needs, subject to assessment by a healthcare professional.

Supplementation should always be individualized and guided by a healthcare professional.

What is the recommended daily dose of Taurine?

In scientific studies, the doses commonly used range between 500 mg and 2,000 mg per day.

The ideal dose depends on individual needs and should comply with the manufacturer's or healthcare professional's recommendations.

Why might it be difficult to maintain adequate Taurine levels solely through diet?

Several factors can hinder an adequate intake of taurine:

• Taurine is found mainly in animal-derived foods;
• Plant-based foods contain very small amounts;
• Cooking at high temperatures can partially reduce the taurine content in foods;
• Endogenous production varies among individuals;
• Aging can reduce taurine synthesis;
• Some diseases or situations of increased metabolic demand may increase the body's needs.

What are the possible adverse effects of Taurine supplementation?

Taurine is generally considered safe when used at the commonly recommended doses.

In some people, the following may occur:

• nausea;
• diarrhea;
• gastrointestinal discomfort;
• abdominal cramps.

Taurine may also interact with some medications, particularly blood pressure medications and diuretics.

People with chronic diseases, pregnant or breastfeeding women, and individuals taking medication should consult a healthcare professional before starting supplementation.

Conclusion

Taurine is an amino acid naturally produced by the body and present in various animal-derived foods. It plays important roles in cardiovascular, muscular, neurological, and ocular health and continues to be the subject of intense scientific investigation.

Although most people can obtain taurine through diet, certain groups may benefit from supplementation, always under the guidance of a healthcare professional.

Like any food supplement, taurine should be used as a complement to a varied and balanced diet and a healthy lifestyle.

The information presented in this article is for informational purposes only and does not replace medical advice. Food supplements should not be used as substitutes for a varied and balanced diet and a healthy lifestyle.

References

Waldron, M. et al. (2018) 'Effects of oral taurine on athletic performance: A systematic review and meta-analysis', Sports Medicine, 48(5), pp. 1247–1253.

Shao, A. and Hathcock, J.N. (2008) 'Risk assessment for the amino acids taurine, L-glutamine and L-arginine', Regulatory Toxicology and Pharmacology, 50(3), pp. 376–399.

Singh, P. et al. (2023) 'Taurine deficiency as a driver of aging', Science, 380(6649), eabn9257.

Ripps, H. and Shen, W. (2012) 'Review: Taurine – A "very essential" amino acid', Molecular Vision, 18, pp. 2673–2686.

Ginguay, A. et al. (2024) 'Taurine and human health: A narrative review', Nutrients, 16.