In autumn, the weather gets colder
More and more people are enjoying coffee
I feel that it can warm up and refresh me
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But
A young girl
Because I drink three cups of coffee a day
Drink out anemia
What the hell is going on......
Three cups a day
The 12-year-old girl is anemic
Sisi (pseudonym) from Zhejiang is a 12-year-old junior high school student. Last weekend, Sisi was admitted to the pediatric department of a local hospital because of a physical examination that found "low hemoglobin". The blood routine showed that Sisi's hemoglobin was only 69g/L (normal children: 110-160g/L) and the hematocrit was 25.9%, which belonged to moderate anemia. "When we came, our lips, eyelid membranes, and the ends of our limbs were pale, and we were shocked." The attending doctor recalled, "What impressed me was that when we examined her, we found that even the nails were like white paper, and there was no blood. ”
The child does not have bleeding in the stool, heavy menstrual flow, etc., so what is the reason? After asking about the medical history, I learned that due to the recent study pressure, Sisi always habitually drinks coffee to refresh herself, drinking at least 3 cups of instant coffee a day, because she drank coffee with her parents when she was a child, she does not feel unpleasant to drink bitter coffee that children don't like very much.
The doctor continued to ask Sisi about her living habits, and it turned out that the little girl "loves beauty" and has been eating a relatively vegetarian diet for a long time, almost not eating meat.
After improving the relevant examinations to rule out malignant blood disease, gastrointestinal blood loss and other blood loss, the doctor considered that the cause of Sisi's anemia was due to insufficient iron intake and malabsorption caused by his own lifestyle habits, coupled with unbalanced nutrition and lack of folic acid.
Drink coffee
Can it cause anemia?
As more and more people choose coffee, many people are worried, will coffee affect iron absorption? The answer is: yes, but don't worry too much.
Photo courtesy of netizen A Duo
Iron is a very important trace element for the human body, and iron sources can be divided into two categories: heme iron and non-heme iron.
Heme iron is only found in animal foods, such as animal liver, animal blood, red meat, poultry meat, etc. Non-heme iron is mainly found in plant foods, such as spinach and legumes.
Both non-heme iron and heme iron can supplement us with iron, but the effect varies greatly. Heme iron, which can be better absorbed and utilized by the human body, is iron from animal food sources, and the absorption rate of non-heme iron is very low, which is more difficult to be absorbed and utilized by the human body.
The tannic acids in coffee are very easy to combine with iron in the blood to form salts that are difficult to dissolve, thereby inhibiting the body's absorption of iron. However, coffee only affects the absorption of non-heme iron, the kind found in grains and vegetables, but has no effect on heme iron in meat (beef and lamb, fish, and poultry).
According to research, coffee does affect iron absorption. When coffee is consumed with meals, the absorption rate of iron decreases significantly.
But the good news is that there are many sources of iron in our diets, and caffeine intake doesn't have a big impact on the body's overall iron absorption. In fact, coffee's effect on iron in a meal is only about 6%.
In addition, the effect of coffee on iron absorption occurred mainly when ingested immediately after a meal, while drinking coffee 1 hour before a meal did not reduce iron absorption. Therefore, if you are taking iron supplements or iron-rich foods, it is recommended to avoid consuming these foods immediately after drinking instant coffee to optimize the efficiency of iron absorption.
Overall, as long as you can ensure that you get enough iron in your usual diet, such as eating more lean meat, eating fruits and vegetables separately from coffee (vitamin C in fruits and vegetables can promote iron absorption), you don't have to worry about iron deficiency anemia caused by drinking coffee.
The doctor reminds that the main means of treating iron deficiency anemia is to take iron or inject iron, pay attention to the diet during the treatment, eat more fish, meat, vegetables, fruits and other foods rich in vitamin C can also promote iron absorption.
For people with iron deficiency anemia, if you really want to drink coffee, the doctor also gives a few tips:
1. Try not to drink coffee at the same time as eating, it is recommended to drink it after 1 hour after eating.
2. Coffee only affects "non-heme" iron, has no effect on "heme" iron, if you drink coffee, you can usually eat more lean meat, eat more fresh fruits and vegetables, and you can also take iron and vitamin C supplements appropriately to ensure that you can consume enough iron raw materials.
There are also people who "base up" three cups of coffee a day
As a result, he suffered from an "embarrassing" disease
A Ms. Li in Hangzhou always feels a foreign body sensation in her throat, a sticky feeling of phlegm, she can't cough up or swallow, and in severe cases, she also has a feeling of throat blockage, and occasionally has intermittent heartburn and acid reflux.
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"Sometimes when I'm chatting with someone, I suddenly feel phlegm in my throat, and I want to cough but can't cough it out, which is really embarrassing." Ms. Li feels that these symptoms have seriously affected her work and daily life. Thinking that it was inflammation in her throat, she took drugs such as "cephalosporin" and "amoxicillin" by herself, but her symptoms did not improve for a long time.
After receiving the consultation, the doctor learned that in order to boost her spirits, Ms. Li often bought two cups of coffee at a time on the way to work every day, sometimes with breakfast, sometimes even on an empty stomach, and often ordered another cup of iced Americano in the afternoon to "prolong her life", at least three cups of base at the end of the day. After examining her and doing a laryngoscopy, the doctor made a definitive diagnosis of laryngopharyngeal reflux, or reflux pharyngitis.
According to doctors, reflux pharyngitis refers to a chronic inflammation and mucosal damage caused by the abnormal reflux of gastric contents into the pharynx, larynx and upper respiratory tract. Common symptoms include pharyngeal foreign body sensation, burning sensation, hoarseness, and in severe cases, dysphonia, chronic cough, repeated throat clearing, dysphagia, and a few patients may have asthma attacks.
The doctor said that Ms. Lee's illness was mainly caused by excessive coffee consumption, especially on an empty stomach. The caffeine in coffee can easily irritate the gastric mucosa and promote the increase of gastric acid secretion, which can cause acid reflux and irritate the throat mucosa.
The coffee was good though
8 types of people are not recommended to drink too much
Two drinks a day is more reasonable
Doctors remind that although moderate consumption of coffee can refresh the mind, diuretic and laxative, and reduce the risk of cardiovascular and cerebrovascular diseases, not everyone is suitable for drinking coffee.
1. People who don't sleep well - coffee contains high caffeine, which has a certain refreshing effect. Studies have shown that caffeine is rapidly absorbed in the human body, generally reaching its peak within 15 minutes to 2 hours after drinking, spreading throughout the body and crossing the blood-brain barrier. The half-life in adults is generally 2.5~4.5 hours. Therefore, drinking coffee 5 hours before the scheduled bedtime will not have much effect on the sleep of a normal person. However, different groups of people have different levels of tolerance to caffeine, and people who have poor sleep, insomnia, and sleep disorders still have to drink as little or no coffee as possible.
2. People with arrhythmias – There are some studies that show that for most people, even those with arrhythmias or those at high risk of arrhythmias, caffeine intake below 400 mg per day appears to be safe and may even have a protective effect against arrhythmias, although there is no clearly defined threshold for caffeine harm; However, for people with malignant arrhythmias and people at high risk of caffeine-sensitive arrhythmias, caffeine should still be avoided as much as possible.
400 mg of caffeine is equivalent to no more than 4 cups of pure coffee (150 ml/cup), if you buy coffee, you can compare the amount of caffeine per cup on the package label to calculate the number of cups; If it is a small packet of 1.8~2 grams of instant coffee, it is generally no more than 5 bags per day.
3. People with stomach problems - Coffee can stimulate the gastrointestinal tract and increase the secretion of gastric acid. This does not affect the health of people with normal stomach function. However, for people with pre-existing stomach problems, such as stomach ulcers, hypersecretion of gastric acid, and gastroesophageal reflux disease, regular or excessive consumption of coffee may cause symptoms such as nausea, vomiting, acid reflux, and heartburn.
4. Patients with irritable bowel syndrome - irritable bowel syndrome is a very common functional bowel disease, and patients may have frequent diarrhea and constipation. Caffeine in the digestive system can stimulate the secretion of gastric acid and cholecystokininin, thereby promoting colonic motility and causing diarrhea and other symptoms. In general, patients with irritable bowel syndrome are sensitive to caffeine, which may increase the symptoms of gastrointestinal discomfort and diarrhea after drinking.
5. Osteoporosis patients - caffeine, tannic acid and other components in coffee do affect calcium absorption, and caffeine diuresis will increase calcium loss, but this does not have much impact on healthy people. Some studies have mentioned that the negative effect of caffeine on calcium absorption is very small, and only 1~2 tablespoons of milk can be completely counteracted. However, for people who already suffer from osteoporosis, the Chinese Expert Consensus on the Diagnosis and Treatment and Management of Osteoporotic Pain in the Elderly (2024 Edition) recommends that excessive coffee consumption should be avoided.
6. Glaucoma patients - Studies have shown that the caffeine contained in coffee can cause abnormal increase in intraocular pressure in glaucoma patients, which is a risk factor for the development of glaucoma. Elevated intraocular pressure can cause optic nerve damage and visual impairment, which can lead to blindness in severe cases.
Therefore, glaucoma patients should avoid drinking high-content caffeine drinks such as coffee in their daily life to avoid further damage to the eyes caused by increased and fluctuating intraocular pressure.
7. Children and adolescents - the internationally recommended safe intake of caffeine for children and adolescents is not more than 2.5~3 mg per kilogram of body weight. In other words, for example, for children and adolescents weighing 40 kg, the intake of caffeine is 100~120 mg, which is about 1 cup of coffee. Of course, it's better not to drink it.
This is because children who are in the growth and development period have a weaker ability to metabolize caffeine than adults, which not only affects sleep, but also affects physical development. Therefore, children aged 12 and under are prohibited from consuming caffeine and do not drink caffeinated beverages such as strong tea and coffee.
8. Pregnant and lactating women – The Scientific Consensus on Coffee and Health mentions that it is not recommended for pregnant women to drink coffee, and if it is consumed, no more than 2 cups per day.
Therefore, for women who do not usually drink coffee, it is recommended not to drink coffee during pregnancy and lactation; For women who have been drinking coffee all the time, it is best to limit the amount of coffee consumed.
Doctors recommend that healthy adults consume no more than 300-400 mg of caffeine per day, that is, no more than two cups a day (one cup is about 200-300 ml). It is recommended to drink coffee with less sugar and cream, add milk in moderation, and drink as little instant coffee as possible.
Source: Xinhua Daily Health Comprehensive Health Hangzhou, Ningbo Evening News, Popular Science China, etc
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