Is fish sauce bad for you? (risk and benefits of fish sauce)

In this article, we will answer the question “Is fish sauce bad for you?” and discuss what is the composition of fish sauce, and the benefits and risks of consuming fish sauce.

Is fish sauce bad for you?

Fish sauce is not necessarily bad for you, unless if consumed in a high amount (1) or if consumed by an allergic individual (7). The fish sauce contains healthy compounds, such as amino acids with important biological functions (2, 3).

On the other hand, fish sauce also contains a high concentration of sodium, which makes it unsuitable for individuals at risk, such as pregnant women (1).

What is the composition of fish sauce?

Fish sauce is rich in amino acids (proteins) and contains carbohydrates, minerals, vitamins and a high amount of sodium. The composition of 100 g of fish sauce is shown in the table below (4).

Nutrient  amount unit
water 71 g
energy 35 kcal
proteins 5 g
carbohydrates 3.6 g
lipids 0.1 g
calcium 43 mg
iron 0.78 mg
magnesium 175 mg
potassium 288 mg
sodium 7851 mg
selenium 9.1 micrograms
niacin 2.3 mg
vitamin B6 0.34 mg
choline 13.2 mg

What are the benefits of consuming fish sauce? 

The benefits of consuming fish sauce are mainly the amino acids and nucleotides present in the fish sauce, added to some other healthy compounds, such as minerals and vitamins.

The proteins in fish are hydrolysed and fermented by many microorganisms during the production of fish sauce, resulting in the generation of many amino acids and nucleic acids (nucleotides) with improved biological functions (2, 3, 5).

Amino acids, such as tyrosine, histidine and tryptophan, are aromatic amino acids, which can neutralise the reactive oxygen species in the body, reducing the risks of oxidative stress.

Reactive oxygen species cause cell damage, have mutagenic effects and are considered the main cause of many inflammatory diseases, such as atherosclerosis. arthritis and neurological disorders, such as Alzheimer´s disease (2, 3).

The hydrolysis and fermentation stages of the production of fish sauce are also responsible for enhancing the flavour of the product. Compounds such as 5´- inosine monophosphate and 5´- adenosine monophosphate are responsible for the umami taste in the fish sauce (5).

These compounds also have biological functions in the body, as they are reported to favour cell proliferation through stimulating RNA production. In addition, they help in the recovery of liver cells (6).

The amino acid composition of the fish sauce and their properties, as well as their antioxidant effects, are dependent on the fish used to produce the fish sauce and the fermentation time.

A fermentation time of 9 to 12 months is required to achieve the desired biological functions and the characteristic flavour of the fish sauce (2).

What are the risks of consuming fish sauce?

The risks of consuming fish sauce are the high amount of sodium in the fish sauce composition and the possible risk of allergic reactions.

The fish sauce contains about 20 % salt in the composition (5), which means an amount of 1260 mg of sodium in one tablespoon (4). The consumption of high amounts of sodium is related to an increased risk of high blood pressure in the population, leading to higher risks of cardiovascular diseases as well (1).

In particular, during pregnancy, women are advised to reduce their dietary intake of sodium and increase their intake of calcium to improve their birth outcomes (1).

Studies showed that the reduction of sodium in the diet of pregnant women significantly reduced their risks of developing preeclampsia, which is characterised as elevated blood pressure.

Another risk related to the consumption of fish sauce is the risk of allergic reactions. Reaction to fish and seafood products is very common in the population, ranging from 2 % to above 8 %, depending on the geographical region and age (7).

Fish allergy is an Immunoglobulin-e-mediated food allergy and can lead to symptoms such as urticaria, skin oedema, swelling of the throat, difficulty breathing, dizziness, and even health-threatening anaphylaxis (7).

Although the many processing stages in the production of fish sauce may reduce the risks of allergic reactions, fish sauce should not be consumed by allergic individuals.

Conclusion

In this article, we answered the question “Is fish sauce bad for you?” and discussed what is the composition of fish sauce, and the benefits and risks of consuming fish sauce.

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References

1.-

Arvizu M, Bjerregaard AA, Madsen MT, Granström C, Halldorsson TI, Olsen SF, Gaskins AJ, Rich-Edwards JW, Rosner BA, Chavarro JE. Sodium intake during pregnancy, but not other diet recommendations aimed at preventing cardiovascular disease, is positively related to risk of hypertensive disorders of pregnancy. The Journal of Nutrition. 2020 Jan 1;150(1):159-66.

2.-

Jung WK, Rajapakse N, Kim SK. Antioxidative activity of a low molecular weight peptide derived from the sauce of fermented blue mussel, Mytilus edulis. European Food Research and Technology. 2005 May;220:535-9.

3.-

Shivanne Gowda SG, Narayan B, Gopal S. Bacteriological properties and health-related biochemical components of fermented fish sauce: An overview. Food Reviews International. 2016 Apr 2;32(2):203-29.

4.-

FoodData central [Internet]. Usda.gov. [cited 2023 Sep 18]. Available from: https://fdc.nal.usda.gov/fdc-app.html#/food-details/2341881/nutrients

5.-

Park JN, Watanabe T, Endoh KI, Watanabe K, Abe H. Tasteactive components in a Vietnamese fish sauce. Fisheries science. 2002;68(4):913-20.

6.-

Sanchez-Pozo A, Gil A. Nucleotides as semiessential nutritional components. British Journal of Nutrition. 2002 Jan;87(S1):S135-7.

7.-

Sharp MF, Lopata AL. Fish allergy: in review. Clinical reviews in allergy & immunology. 2014 Jun;46:258-71.