Tuna fish is one type of fish consumption that has many benefits for the health of the body. However, behind the benefits of tuna, other dangers lurk you if you consume too much. is it bad to eat tuna everyday ? and is it true that mercury in the master is poisonous?
Tuna fish is a fish that has a high content of omega-3 fatty acids. The content of omega-3 fatty acids contained in tuna meat is useful for the health of the human body. For example, to lower triglyceride levels, control bad cholesterol in the blood, as well as reduce the risk of heart disease.
Are you a tuna lover?
Tuna is an economically important fish in the world fishery trade and belongs to the pelagic fish group. Tuna fish can live in colder water and survive in diverse conditions.
Tuna fish have a habit of migrating throughout their life. The habit of tuna fish migrating is supported by the metabolic system of tuna fish that can regulate the amount of heat that is in the body to achieve effective biological conditions.
Try this delicious and luxurious dish Ahi Tuna Recipes Pan-Seared Without Soy Sauce, fresh tuna cooked with a sprinkling of sesame will give off a distinctive aroma served with a healthy and very delicious seaweed rujak. You’ll get it in less than 30 minutes.
What’s in the tuna?
Tuna meat is pink to deep red because the muscles of tuna fish contain more myoglobin than other fish. Tuna has a high protein content and low fat.
Tuna fish contains protein between 22.6 – 26.2 gr / 100 gr of meat. Fat between 0.2 – 2.7 gr /100 gr of meat. Tuna also contains the minerals calcium, phosphorus, iron and sodium, vitamin A (retinol), and B vitamins (thiamin, riboflavin, and niacin).
The protein content in tuna white meat is higher than that of red meat, but the fat content of white meat is lower than that of red meat. Red tuna is rich in fat, oxygen supply, and myoglobin, making it possible to swim at a steady speed.
Types of tuna fish
Large Eye Tuna (Thunnus obesus)
Large eye tuna can grow up to 2.5 meters in weight up to 210 kg. He can be up to 11 years old. Tuna is widespread in the Indian Ocean, Atlantic, and Pacific Oceans in the tropics and subtropics.
This fish can live in the high seas up to a depth of 250 meters, the time for the doubling of its population from 1.4 years to 4.4 years with the number of eggs reaching 2 million grains.
The season greatly affects the presence of tuna of this breed, since they live at a temperature of 17-22. Large tuna fish that are still small usually live in groups and are near floating objects, such as coconut leaves, garbage, etc. This type of tuna can live by eating a variety of marine animals including small fish.
Tuna Albakor (Thunnus Alalunga)
Albacore tuna is one of the smallest types of tuna, can grow up to 1.4 meters with a weight of 60 kg, its age can reach 9 years and tuna fish of this type is widespread throughout the tropics.
Bluefin tuna (Thunnus maccoyii)
The body of the bluefin tuna is oval, tall, thick, and dense. It has a second dorsal fin, pectoral fin, and short rectal fin.
On the back of his body is dark blue and on the abdomen is silvery. The fish has yellow dorsal and rectal fins with yellow spots on its fins.
Yellowfin Tuna (Thunnus Albacares)
Yellowfin tuna fish has fat and a strong body. It has a second dorsal fin and a rectal fin that curves long towards a slender, pointed crescent-shaped tail.
The tip of the pectoral fin ends at the beginning of the rectal fin, and all the fins present in this type of fish have a bright golden yellow color, which at the edges and ends are sharp black. The upper body has a greenish color and increasingly down silvery color.
Dog Tooth Tuna (Gymnosarda Unicolor)
This type of tuna is called dog tooth tuna because it has a dog-like mouth. Dogtooth tuna fish live in a small number of groups, so if lured one then his friends will follow.
This fish is a favorite among anglers because it has a strong pull and is widely found in the southern sea of Java island so it is easier to get it.
Is it bad to eat tuna every day and what is the dosage?
According to Micharl Gochfeld, M.D., Ph.D., a researcher with the Environmental and Occupational Health Science Institute, this depends on each individual. For one individual it is likely to be safe to consume tuna fish every day, while for other individuals they could get poisoned by eating the same tuna fish.
Tuna is highly nutritious and contains protein, healthy fats, and vitamins – but should not be consumed daily.
The FDA recommends that adults eat 3/5 ounces (85-140 grams) of fish 2-3 times a week to obtain enough omega-3 fatty acids and other beneficial nutrients.
However, research shows that eating fish regularly with a mercury concentration of more than 0.3 ppm can increase mercury levels in the blood and spur health problems. Most tuna species exceed this number.
Therefore, most adults should eat enough tuna and consider choosing another fish that is relatively low in mercury.
When buying tuna, choose skipjack or canned mild varieties, which don’t contain as much mercury as albacore or large eyes.
You can consume canned skipjack and tuna along with other low-mercury species, such as cod, crab, salmon, and shellfish, as part of the recommended 2-3 servings of fish per week.
Try to avoid eating albacore or yellowfin tuna more than once a week. Avoid big-eyed tuna as much as possible.
Is it true that mercury in tuna contains toxins?
Mercury has been declared by the WHO as one of the most dangerous chemicals for health. Mercury itself can be found in soil, water, and air.
Fish in the sea can be contaminated by mercury if the waters they live in are contaminated by mercury carried through the air.
The content that is usually found in the type of fish that mercury is methylmercury (methylmercury).
Methylmercury deposits are what make fish very toxic when consumed. Some types of fish have the potential to contain high methylmercury when:
- The age of the fish is long enough
- Fish are predators that are at the top of the food chain
- Fish often consume other marine animals that have also been contaminated with mercury
Examples of types of sea fish containing high mercury levels, among others:
- Tuna fish
- Marlin fish
Symptoms of Mercury Poisoning
Symptoms arising from mercury poisoning can vary greatly. This depends on the type of mercury that enters the body, the way it enters, the amount of mercury that enters, the length of exposure, the age of the person exposed, and the general health condition of the person.
People experiencing mercury poisoning generally experience the following symptoms:
- Muscles feel limp
- Coordination of the limbs decreases
- The sensory system is disturbed
- Peripheral vision impairment (side field of view)
- Difficulty walking, listening, and speaking
How to Avoid the Dangers of Mercury Fish
The fact that there is potential for mercury in fish does not make you afraid to eat fish or shellfish. Fish is still a healthy food that you need to consume regularly.
If you accidentally consume fish containing mercury, the chemical will not immediately settle in your body but can be excreted through breast milk, urine, or feces.
However, the body, which is exposed to high levels of mercury, takes at least a year to be completely clean of these chemicals after fish consumption is stopped.
You can’t avoid mercury at all, because almost all fish and shellfish contain little mercury. Even so, to avoid the dangers of mercury fish, you are advised to start paying attention to the selection of the type of fish to be consumed and know the characteristics of the mercury fish.
Avoid or reduce the consumption of high levels of fish. Some types of fish are often used as the basic ingredients of sushi.
Instead, you are advised to consume fish with lower mercury content. Another important thing is to reduce or avoid eating raw fish, especially for pregnant women.