What's wrong with the old man's weak hands and feet?

Auntie Huang is 65 years old and feels that her body has always been relatively strong. During the New Year, she suddenly felt dizzy, weak hands and feet, trembling, and even fainted. After coming to the hospital for medical examination, she realized that it was because of potassium deficiency. Recently, the Department of Geriatrics of the Third Affiliated Hospital of Guangzhou Medical College has received many cases of potassium deficiency among the elderly. Zhong Xianghong, deputy chief physician of the department, said that some patients with chronic diseases, poor gastrointestinal function, poor appetite, eating less for a long time, or suffering from chronic diarrhea, increased frequency of defecation, or taking diuretics for a long time (high blood pressure medication), which will lead to the loss of potassium in the body, and the emergence of hyperkalemia.　　Potassium is a very important element in the body. Although the concentration of potassium in the blood serum is only 3.5-5.5 mmol/L, it is essential for life activities. A healthy person with a normal diet and a balanced nutritional structure will be able to meet the body's need for potassium absorption without the need for additional special supplements. When the body lacks of potassium, the light will appear nausea, vomiting, abdominal distension, gastrointestinal peristalsis slows down, fatigue, weakness, fatigue; serious cases will appear generalized muscle weakness, numbness, pain, limb paralysis, heartbeat weakening, dizziness, intestinal paralysis, anorexia, respiratory muscle paralysis, and so on, and even endangered life.　　Zhong Xianghong emphasized, there are basic diseases and long-term use of drugs in the elderly it is best to go to the hospital on a regular basis to do a checkup, to understand the body of potassium electrolyte balance, if there is a low situation, must be timely supplementation, prevention and treatment of symptoms of potassium deficiency appeared. In addition, the cause of potassium deficiency in the elderly may also be due to the decline of chewing function of the teeth, the type of diet is relatively single, eat less potassium-containing food, which gradually leads to potassium deficiency.　　Therefore, middle-aged and elderly people must pay attention to dietary diversity and balanced nutritional structure. Dr. Zeng Qingshan, a nutritionist of GNMC, said that middle-aged and elderly people who are deficient in potassium can eat more foods with higher potassium content. Generally speaking, seaweed food, such as kelp, rich in potassium; vegetables with high potassium content are spinach, amaranth, parsley, celery, green garlic, lettuce, potatoes, Chinese mountains, beans, and soybeans and their products, etc.; food to buckwheat noodles, sweet potatoes with high potassium content; fruits are the most abundant in bananas with potassium.　　But these are not generalizations, should eat more food which also depends on the condition and constitution, patients with kidney disease is best to eat less soy products, and intestinal patients eat as little as possible crude fiber foods, weaker women should eat less nori. It is best to see a nutritionist, according to the doctor's advice to supplement potassium.