Experts remind:
Middle-aged and elderly people who pay attention to health should eat more seafood, preferably 2-3 times a week, each time 100g, because unsaturated fatty acids in seafood can reduce low-density cholesterol in the blood and prevent coagulation, thus reducing the probability of coronary heart disease, hypertension and stroke in middle-aged and elderly people.
It is good for middle-aged and elderly people to eat seafood, but don't eat it at will. Improper intake of seafood will also have adverse effects on the body, especially for middle-aged and elderly people with relatively weak constitution. Here are some things to pay attention to:
First: be sure to cook it.
If people eat seafood that is not fully heated or cooked, take too much avidin, and then combine with biotin in human intestines, resulting in insufficient biotin, there will be symptoms such as dermatitis of limbs, pale skin and mucosa, depression, muscle aches, allergies, loss of appetite and so on. When seafood is heated sufficiently before eating, avidin will be destroyed. Completely cooked can also play a role in sterilization.
Experts explained:
There is a substance called Urea Synthase in human liver, which can relieve the toxicity of ammonia toxic substances produced after protein is absorbed by human body. Biotin is the main component of this substance. If the middle-aged and elderly people are short of biotin, the enzyme activity will decrease and the metabolism of ammonia toxic substances will be poor, which will easily lead to hyperammonemia.
Second: you can't eat seafood because of some diseases.
Middle-aged and elderly people with gout, arthritis and hyperacidity should eat less or not eat seafood, which has high purine content. The elderly with the above situation are prone to form uric acid crystals in the body after eating seafood, which aggravates the condition;
Hyperthyroidism cannot be eaten by the elderly, and the iodine content of seafood is higher than that of ordinary food. Eating too much will aggravate the condition;
Old people with allergic rhinitis, allergic asthma and allergic eczema are also not suitable for eating seafood, because seafood has the characteristics of "hair", commonly known as hair;
Middle-aged and elderly people with poor stomach are also advised not to eat, which may easily lead to spleen and stomach deficiency and cold in middle-aged and elderly people.
Third: correct understanding and good eating habits.
Try to choose heating cooking. There are many germs in seafood, as well as possible parasite eggs, and possible germs and virus pollution during production and processing, all of which need to be killed at high temperature. So when eating some unheated seafood, you must be more careful to ensure freshness and hygiene.
After buying live shellfish, you can't keep them at home for too long. Cook them as soon as possible. The bacteria carrying capacity of shellfish itself is relatively high, and protein decomposes quickly. Once it dies, it will breed a large number of bacteria and produce toxins, and the unsaturated fatty acids contained in it are also prone to oxidative rancidity. Stale shellfish will also produce more amines and free radicals, which pose a threat to human health.
It is best not to drink beer when eating seafood. Seafood such as shrimps and crabs will form uric acid after metabolism, and excessive uric acid will cause gout, kidney calculi and other diseases. If you eat a lot of seafood and drink beer at the same time, it will accelerate the formation of uric acid in the body.
It is not advisable to drink tea after eating seafood. Because tea also contains tannic acid, it can also form insoluble calcium with calcium in seafood. Eating seafood before or after eating seafood will increase the chance of combining calcium with tannic acid. It is recommended to drink tea at intervals of more than two hours.
Seafood should not be eaten with fruits rich in tannic acid, such as persimmons and grapes. Because tannic acid will destroy the high-quality protein in seafood and greatly reduce the nutritional value of seafood, it should be eaten at least two hours apart.
These two kinds of seafood are especially suitable for the elderly!
1, squid
Thanks to the progress of production technology, squid can now appear on our table all year round. It is one of the low-fat and low-calorie seafood with high protein content, and its meat contains a lot of taurine. Eating it by the elderly can reduce the cholesterol accumulated on the inner wall of blood vessels, which is a good choice for preventing vascular diseases, gallstones and Alzheimer's Harmo's disease. However, people with spleen and stomach deficiency and cold should eat less, and friends with eczema should not eat it.
Step 2: hairtail
Many people like to eat hairtail, which is a kind of fish with high cost performance. Because of its thick meat and few thorns, it is widely loved by people. Hairtail can bring people the functions of invigorating qi, nourishing blood and warming stomach. Old people, children and malnourished people should eat more.