How Does Fish Consumption Impact the Body?
Felix Weber
2026-03-17
5 min. read
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Fish serves as an excellent source of protein, vitamins, and minerals, which can have propitious effects on health.
Nutritional components in fish
Protein - fish meat delivers an average of 18 grams of protein per 100 g of fish. It is easily digestible, well-absorbed, and has a high content of branched amino acids. The meat is generally leaner than beef or pork, which allows for the maintenance of a low calorie content in most species of fish. For example, 100 g of mint contains 81 calories, cod contains 82 calories, and pike contains 88 calories. Fish also provide many minerals, including potassium, phosphorus, magnesium, iron, zinc, and selenium. Marine species, like shellfish or mollusks, contain more sodium than freshwater fish. Fish are also a natural source of iodine. Fats and omega-3 fatty acids - fatty fish are a good source of fat-soluble vitamins such as A, D, E, and K. Fish also provide vitamins from the B group, regardless of the fat content. Regarding the fat composition, it is important to note that not all fish are lean. Herring, mackerel, and salmon contain between 9 and 14% fat. Fish are the only animal products that contain little saturated fat but a lot of unsaturated fat. Thanks to this, fish provide an exceptionally high amount of polyunsaturated fatty acids from the omega-3 family, including EPA and DHA.
Fish and its health impacts via omega-3
Substantial benefits stem from providing the body with omega-3 fatty acids. These fatty acids are essential for the normal development and functioning of the nervous system, particularly the brain and vision. They can also decrease susceptibility to depression and other neuropsychiatric disorders, and positively influence memory and prevent dementia. These acids strengthen the immune system and protect against cardiovascular diseases such as atherosclerosis and hypertension. They also alleviate symptoms of asthma and inflammatory diseases, such as rheumatoid arthritis. Moreover, these fats aid in weight loss. Research indicates that individuals who regularly consume fish or supplement their diet with fish oil, lose weight faster.
Absence of flawless sustenance
Despite fish being highly nutritious and abundant in vitamins, one should not overindulge in their consumption. Everything should be eaten in moderation, as there is no such thing as perfect food. While they possess an extremely high nutritional value unparalleled by other products, they may also contain contaminants. One of the most significant contaminants in fish is mercury, which is present in fish as methylmercury. Mercury poisoning can result in damage to the nervous system, visual disturbances, coordination impairment, mental retardation, and even death.
Optimal fish quantity in diet
To fully benefit from consuming fish in our diet, we should consume 1 to 2 servings of fish per week. These fish should be rich in omega-3 fatty acids. Consuming fish with low-fat content is also advantageous, but can be consumed more frequently. It is currently believed that to maintain health and reduce the risk of cardiovascular diseases, 250 mg of EPA and DHA should be provided to the body daily. We can achieve this amount of omega-3 acids by consuming a 125 gram serving of salmon or two 120 gram servings of trout per week.
Overview
Incorporating fish into our culinary offerings brings multiple benefits. It is sometimes worth substituting chicken, beef, or pork with fish meat. We provide essential nutrients and enjoy exceptional taste quality.
