A cup of coffee has become a ritual for more and more people to wake up. The reason why
coffee is so popular is not only refreshing but also because coffee itself is a healthy drink. Many studies have conducted a comprehensive analysis of the relationship between coffee and health, pointing out that drinking coffee in moderation can reduce the risk of certain cancers, diabetes , and cardiovascular diseases.
However, coffee does have some unsuitable people, especially the following 9 groups of people should pay special attention.
Image source: giphy
Sleep disorder patients with
Caffeine has a central nervous system excitation effect, which is what people often call refreshing and refreshing effects. This is also the reason why many office workers and postgraduate entrance examination parties rely on coffee.
, but due to genes, different people with have different sensitivity to caffeine.
Some people have weak coffee metabolism genes, and a little caffeine needs to be metabolized for a long time. Even the coffee I drank in the morning was still dancing in my brain at night.
So, if you have problems such as insomnia, sleep disorders, etc., try not to drink coffee, or drink less coffee, and it is best not to drink coffee in the afternoon or before going to bed.
is right, people who are prone to insomnia, it is recommended to drink less in milk tea (there are also a lot of caffeine in milk tea).
People with panic and anxiety
Coffee may cause sudden panic and anxiety.
But don’t panic first. Research has found that taking 400-800 mg of high doses of caffeine (about 5-9 cups of coffee) every day can cause negative effects, such as causing people to have anxiety, tension, nerve allergies, panic and tremors and .
Image source: giphy
As long as it does not exceed 300-400 mg of caffeine (about 4-5 cups of coffee) , there will be no such problems.
is not a fan of coffee and usually doesn't drink so much, so don't worry too much.
03 People with abnormal heart rate
Some people will experience heartbeat, nausea, dizziness and other discomfort after drinking coffee. , in fact, this is "caffeine intolerance".
This is a normal phenomenon and is related to individual sensitivity to caffeine. Some people are more sensitive to caffeine, and the caffeine metabolism is slower. When drinking coffee, they feel arrhythmia, , rapid heartbeat, palpitations, etc., but some people are fine.
Moreover, different people have different reactions - some have this problem after drinking one cup, but some people have no problem drinking four or five cups.
So, does not mean saying goodbye to coffee, but adjusting the frequency and portion of coffee according to your own situation.
Image source: giphy
If you have abnormal heart rate and palpitations, , then try not to drink, or drink less. For example, if you drink 2 cups a day, you might as well reduce it to 1 cup a day.
04 Iron deficiency anemia patients with
polyphenols , phytic acid and other plant components in coffee will indeed affect the absorption of iron. for those with iron deficiency anemia, you can drink less coffee appropriately.
A study found that when drinking caffeine drinks while eating, a cup of coffee reduced iron absorption in burger meals by 39%, while tea decreased by 64%.
Regular drinking of coffee may also affect the storage level of iron. A large study of found that in the elderly, a weekly cup of coffee was associated with a 1% reduction in ferritin levels.
Image source: Station Cool Heluo
Recommended iron deficiency anemia:
Try not to drink coffee while eating. It is recommended to drink it 1 hour after the meal;
Coffee only affects "non-heme" iron and has no effect on "heme" iron. Just eat two more pieces of lean meat.
For healthy people, drinking coffee will not affect the absorption of iron, so there is no need to worry about it causing iron deficiency anemia.
05 Patients with gastric acid reflux
Some studies have found that coffee may worsen the symptoms of gastric acid reflux.
However, this conclusion is still controversial. Some related large meta-study found that neither coffee nor tea (caffeine) was found to be directly related to gastroesophageal reflux disease (GERD). Moreover, there may be many reasons for gastroesophageal reflux , and it is not particularly clear what is the cause.
suggests to follow your feelings. If you have poor stomach function, drinking coffee will have symptoms such as acid reflux. , then drink less or not.
Image source: giphy
06 irritable bowel syndrome patients with irritable bowel syndrome are gastrointestinal dysfunction diseases, referring to persistent or intermittent abdominal pain, abdominal distension, bowel habits and abnormal stool traits, but without morphological and biochemical abnormalities.
Some studies have found that caffeine can increase diarrhea.
For example, Swedish A survey showed that 39% of patients with irritable bowel syndrome will experience worsening intestinal symptoms, including diarrhea and stomachache . However, there is no direct evidence that reducing caffeine can improve symptoms.
Image source: Zhaiku Heluo
The pathogenesis of irritable bowel syndrome is not very clear and is related to a variety of factors.
is currently recognized as intestinal infections and mental disorders, and diet will also have a certain impact; , but the impact is relatively small, and controlling diet is not the only way to solve it.
's advice for this group of people is to follow your own feelings. If you have gastrointestinal discomfort symptoms when you drink coffee, then drink less or not.
07 Hypertension patients
The prevalence of hypertension in adults in the world exceeds 30%. There has been a lot of controversy about the impact of drinking coffee on blood pressure and the risk of arterial hypertension.
Currently, research believes that drinking coffee regularly in will not increase the risk of hypertension.
Moreover, coffee also contains a variety of antioxidant ingredients, such as chlorogenic acid , coffee bean alcohol, etc. These antioxidant substances are also beneficial for cardiovascular and blood pressure control.
Latest meta-analysis results show that moderate and habitual drinking of coffee (1 to 3 cups per day) will not have an adverse effect on most people's blood pressure, and may even reduce the risk of all-cause death caused by arterial hypertension and cardiovascular-related.
However, in some studies, some people have found that some people with will experience a short increase in blood pressure after drinking coffee, and usually takes less than 3 hours.
Image source: giphy
Remind everyone that is still appropriate for patients with hypertensive blood pressure who do not drink coffee frequently, and don’t drink too much at once.
08
Pregnant women
There has been updated evidence in recent years that drinking coffee during pregnancy may be related to the increased risk of spontaneous miscarriage .
Overall, we discourage pregnant women from drinking coffee, but this does not mean they cannot drink it at all. If you really want to drink it, you can drink it. If you have the habit of drinking coffee or want to satisfy your cravings, needs to control your caffeine intake, which is about half of the average person's.
Currently, it is generally believed that you can drink coffee in small amounts during pregnancy (no more than 150-300 mg of caffeine per day, about 2 cups). You can also choose "low-cause" coffee (decaffeinated coffee).
09
Children and adolescents are still developing. The impact of caffeine on their nervous system and cardiovascular system is not fully understood. Caffeine may disrupt children's sleep status, and many coffee drinks can also bring too much sugar intake.
Therefore, the recommendation of the American Academy of Pediatrics is that children and teenagers do not drink coffee.
So, children should try not to drink coffee. As parents, we should also help our children control their intake of coffee, tea and other caffeine-containing beverages.
But this does not mean that it will be harmful to children’s coffee. There is no need to worry about drinking small amounts occasionally.
Currently, it is generally believed that children and adolescents' daily caffeine intake does not exceed 2.5 to 3 mg per kilogram of body weight (for children and adolescents weighing 30 kilograms, is about 75 to 100 mg of caffeine) and is about a cup of coffee.
Image source: Zhaiku Heluo
In fact, from the current consensus in the scientific community, more and more research evidence supports that coffee is more beneficial to health than disadvantages.
But after all, everyone has different physical conditions. People who don’t like it and will feel uncomfortable after drinking it, there is no need to force themselves to accept coffee.
For those who like to drink coffee, you should also pay attention to the quantity and type. If you want to drink, you will choose coffee that doesn’t add anything. Most of the research on coffee health refers to black coffee that doesn’t add anything.
Many instant three-in-one coffee or fancy coffee on the market are added with a lot of white sugar and fat powder . Such coffee is not healthy. If you think the black coffee is too bitter, you can add some milk or milk powder.
Image source: Zangku Heluo
So how much coffee should I drink to the right amount?
Currently, the scientific community believes that healthy adults consume no more than 210 to 400 mg of caffeine per day. Take the medium cup of American coffee (about 355 ml per cup) as an example, is about 1 to 2 cups per day.
In addition to coffee itself, many beverages in life also contain caffeine, such as cola, Red Bull , tea, and milk tea. If you drink these beverages, remember to drink less coffee.
Finally, I would like to remind everyone that everyone has different tolerance to caffeine. Some people can drink several cups and it’s okay, but some people feel uncomfortable after drinking a few sips. Therefore, you should also pay attention to following your feelings:
If you drink coffee, will experience insomnia, anxiety, tremor, stomach discomfort, heart rate increase, headache, nausea and irritability. means that it may be that the tolerance may be exceeded and appropriate adjustments should be made.
A cup of coffee has become a ritual for more and more people to wake up. The reason why
coffee is so popular is not only refreshing but also because coffee itself is a healthy drink. Many studies have conducted a comprehensive analysis of the relationship between coffee and health, pointing out that drinking coffee in moderation can reduce the risk of certain cancers, diabetes , and cardiovascular diseases.
However, coffee does have some unsuitable people, especially the following 9 groups of people should pay special attention.
Image source: giphy
Sleep disorder patients with
Caffeine has a central nervous system excitation effect, which is what people often call refreshing and refreshing effects. This is also the reason why many office workers and postgraduate entrance examination parties rely on coffee.
, but due to genes, different people with have different sensitivity to caffeine.
Some people have weak coffee metabolism genes, and a little caffeine needs to be metabolized for a long time. Even the coffee I drank in the morning was still dancing in my brain at night.
So, if you have problems such as insomnia, sleep disorders, etc., try not to drink coffee, or drink less coffee, and it is best not to drink coffee in the afternoon or before going to bed.
is right, people who are prone to insomnia, it is recommended to drink less in milk tea (there are also a lot of caffeine in milk tea).
People with panic and anxiety
Coffee may cause sudden panic and anxiety.
But don’t panic first. Research has found that taking 400-800 mg of high doses of caffeine (about 5-9 cups of coffee) every day can cause negative effects, such as causing people to have anxiety, tension, nerve allergies, panic and tremors and .
Image source: giphy
As long as it does not exceed 300-400 mg of caffeine (about 4-5 cups of coffee) , there will be no such problems.
is not a fan of coffee and usually doesn't drink so much, so don't worry too much.
03 People with abnormal heart rate
Some people will experience heartbeat, nausea, dizziness and other discomfort after drinking coffee. , in fact, this is "caffeine intolerance".
This is a normal phenomenon and is related to individual sensitivity to caffeine. Some people are more sensitive to caffeine, and the caffeine metabolism is slower. When drinking coffee, they feel arrhythmia, , rapid heartbeat, palpitations, etc., but some people are fine.
Moreover, different people have different reactions - some have this problem after drinking one cup, but some people have no problem drinking four or five cups.
So, does not mean saying goodbye to coffee, but adjusting the frequency and portion of coffee according to your own situation.
Image source: giphy
If you have abnormal heart rate and palpitations, , then try not to drink, or drink less. For example, if you drink 2 cups a day, you might as well reduce it to 1 cup a day.
04 Iron deficiency anemia patients with
polyphenols , phytic acid and other plant components in coffee will indeed affect the absorption of iron. for those with iron deficiency anemia, you can drink less coffee appropriately.
A study found that when drinking caffeine drinks while eating, a cup of coffee reduced iron absorption in burger meals by 39%, while tea decreased by 64%.
Regular drinking of coffee may also affect the storage level of iron. A large study of found that in the elderly, a weekly cup of coffee was associated with a 1% reduction in ferritin levels.
Image source: Station Cool Heluo
Recommended iron deficiency anemia:
Try not to drink coffee while eating. It is recommended to drink it 1 hour after the meal;
Coffee only affects "non-heme" iron and has no effect on "heme" iron. Just eat two more pieces of lean meat.
For healthy people, drinking coffee will not affect the absorption of iron, so there is no need to worry about it causing iron deficiency anemia.
05 Patients with gastric acid reflux
Some studies have found that coffee may worsen the symptoms of gastric acid reflux.
However, this conclusion is still controversial. Some related large meta-study found that neither coffee nor tea (caffeine) was found to be directly related to gastroesophageal reflux disease (GERD). Moreover, there may be many reasons for gastroesophageal reflux , and it is not particularly clear what is the cause.
suggests to follow your feelings. If you have poor stomach function, drinking coffee will have symptoms such as acid reflux. , then drink less or not.
Image source: giphy
06 irritable bowel syndrome patients with irritable bowel syndrome are gastrointestinal dysfunction diseases, referring to persistent or intermittent abdominal pain, abdominal distension, bowel habits and abnormal stool traits, but without morphological and biochemical abnormalities.
Some studies have found that caffeine can increase diarrhea.
For example, Swedish A survey showed that 39% of patients with irritable bowel syndrome will experience worsening intestinal symptoms, including diarrhea and stomachache . However, there is no direct evidence that reducing caffeine can improve symptoms.
Image source: Zhaiku Heluo
The pathogenesis of irritable bowel syndrome is not very clear and is related to a variety of factors.
is currently recognized as intestinal infections and mental disorders, and diet will also have a certain impact; , but the impact is relatively small, and controlling diet is not the only way to solve it.
's advice for this group of people is to follow your own feelings. If you have gastrointestinal discomfort symptoms when you drink coffee, then drink less or not.
07 Hypertension patients
The prevalence of hypertension in adults in the world exceeds 30%. There has been a lot of controversy about the impact of drinking coffee on blood pressure and the risk of arterial hypertension.
Currently, research believes that drinking coffee regularly in will not increase the risk of hypertension.
Moreover, coffee also contains a variety of antioxidant ingredients, such as chlorogenic acid , coffee bean alcohol, etc. These antioxidant substances are also beneficial for cardiovascular and blood pressure control.
Latest meta-analysis results show that moderate and habitual drinking of coffee (1 to 3 cups per day) will not have an adverse effect on most people's blood pressure, and may even reduce the risk of all-cause death caused by arterial hypertension and cardiovascular-related.
However, in some studies, some people have found that some people with will experience a short increase in blood pressure after drinking coffee, and usually takes less than 3 hours.
Image source: giphy
Remind everyone that is still appropriate for patients with hypertensive blood pressure who do not drink coffee frequently, and don’t drink too much at once.
08
Pregnant women
There has been updated evidence in recent years that drinking coffee during pregnancy may be related to the increased risk of spontaneous miscarriage .
Overall, we discourage pregnant women from drinking coffee, but this does not mean they cannot drink it at all. If you really want to drink it, you can drink it. If you have the habit of drinking coffee or want to satisfy your cravings, needs to control your caffeine intake, which is about half of the average person's.
Currently, it is generally believed that you can drink coffee in small amounts during pregnancy (no more than 150-300 mg of caffeine per day, about 2 cups). You can also choose "low-cause" coffee (decaffeinated coffee).
09
Children and adolescents are still developing. The impact of caffeine on their nervous system and cardiovascular system is not fully understood. Caffeine may disrupt children's sleep status, and many coffee drinks can also bring too much sugar intake.
Therefore, the recommendation of the American Academy of Pediatrics is that children and teenagers do not drink coffee.
So, children should try not to drink coffee. As parents, we should also help our children control their intake of coffee, tea and other caffeine-containing beverages.
But this does not mean that it will be harmful to children’s coffee. There is no need to worry about drinking small amounts occasionally.
Currently, it is generally believed that children and adolescents' daily caffeine intake does not exceed 2.5 to 3 mg per kilogram of body weight (for children and adolescents weighing 30 kilograms, is about 75 to 100 mg of caffeine) and is about a cup of coffee.
Image source: Zhaiku Heluo
In fact, from the current consensus in the scientific community, more and more research evidence supports that coffee is more beneficial to health than disadvantages.
But after all, everyone has different physical conditions. People who don’t like it and will feel uncomfortable after drinking it, there is no need to force themselves to accept coffee.
For those who like to drink coffee, you should also pay attention to the quantity and type. If you want to drink, you will choose coffee that doesn’t add anything. Most of the research on coffee health refers to black coffee that doesn’t add anything.
Many instant three-in-one coffee or fancy coffee on the market are added with a lot of white sugar and fat powder . Such coffee is not healthy. If you think the black coffee is too bitter, you can add some milk or milk powder.
Image source: Zangku Heluo
So how much coffee should I drink to the right amount?
Currently, the scientific community believes that healthy adults consume no more than 210 to 400 mg of caffeine per day. Take the medium cup of American coffee (about 355 ml per cup) as an example, is about 1 to 2 cups per day.
In addition to coffee itself, many beverages in life also contain caffeine, such as cola, Red Bull , tea, and milk tea. If you drink these beverages, remember to drink less coffee.
Finally, I would like to remind everyone that everyone has different tolerance to caffeine. Some people can drink several cups and it’s okay, but some people feel uncomfortable after drinking a few sips. Therefore, you should also pay attention to following your feelings:
If you drink coffee, will experience insomnia, anxiety, tremor, stomach discomfort, heart rate increase, headache, nausea and irritability. means that it may be that the tolerance may be exceeded and appropriate adjustments should be made.
This article is a cooperative expert
This article is an expert
Reference
[1]Kexin Food and Nutrition Information Exchange Center, Institute of Nutrition and Health of China Centers for Disease Control and Prevention, Health Communication Branch of the Chinese Preventive Medicine Association, etc. Scientific consensus on coffee and health[J]. Chinese Journal of Preventive Medicine, 2018(11). DOI:10.3760/cma.j.issn.0253-9624.2018.11.004.
[2]https://www.mcgill.ca/oss/article/can-coffee-inhibit-absorption-iron
[3]Temme, E., Van Hoydonck, P. Tea consumption and iron status. Eur J Clin Nutr 56, 379–386 (2002). https://doi.org/10.1038/sj.ejcn.1601309
[4]Chen Y, Chen C, Ouyang Z, Duan C, Liu J, Hou X, Bai T. Prevalence and beverage-related risk factors of gastroesophageal reflux disease: An original study in Chinese college freshmen, a systematic review and meta-analysis. Neurogastroenterol Motil. 2021 Sep 28:e14266. doi: 10.1111/nmo.14266.
[5]J. Kim, S.-W. Oh, S.-K. Myung, H. Kwon, C. Lee, J. M. Yun, H. K. Lee, Association between coffee intake and gastroesophageal reflux disease: a meta-analysis, Diseases of the Esophagus, Volume 27, Issue 4, 1, 2014, 311–317, https://doi.org/10.1111/dote.12099
[6]Cao, Hongying et al. "Association between tea consumption and gastroesophageal reflux disease: A meta-analysis." Medicine vol.98,4(2019):e14173. doi:10.1097/MD.000000000000014173
[7]He Xing, Cui Lihong, Wang Xiaohui, et al. Investigation on the correlation between dietary habits and irritable bowel syndrome [J]. Journal of PLA Medical, 2014, 26(2):14-17. DOI:10.3969/j.issn.2095-140X.2014.02.005.
[8]Simrén M, Månsson A, Langkilde AM, Svedlund J, Abrahamsson H, Bengtsson U, Björnsson ES. Food-related gastrointestinal symbols in the irritable bowel syndrome. Digestion. 2001;63(2):108-15. doi: 10.1159/000051878. PMID: 11244249.
[9]Koochakpoor G, Salari-Moghaddam A, Keshteli AH, Esmailzadeh A, Adibi P. Association of Coffee and Caffeine Intake With Irritable Bowel Syndrome in Adults. Front Nutr. 2021 Jun 15;8:632469. doi: 10.3389/fnut.2021.632469. PMID: 34211993; PMCID: PMC8241212.
[10]Krag E. Irritable bowel syndrome: current concepts and future trends. Scand J Gastroenterol Suppl. 1985;109:107-15. doi: 10.3109/00365528509103944. PMID: 3895385.
[11] Qin Xian, Song Jun, Hou Xiaohua. Research progress on lifestyle and dietary management of irritable bowel syndrome [J]. Gastroenterology, 2018, 23(7):436-439. DOI:10.3969/j.issn.1008-7125.2018.07.012.
[12]Li M, Wang M, Guo W, Wang J, Sun X. The effect of caffeine on intraocular pressure: a systematic review and meta-analysis. Graefes Arch Clin Exp Ophthalmol. 2011 Mar;249(3):435-42. doi: 10.1007/s00417-010-1455-1. Epub 2010 Aug 13. PMID: 20706731.
[13]Nehlig A. Effects of coffee/caffeine on brain health and disease: What should I tell my patients? Pract Neurol. 2016 Apr;16(2):89-95. doi: 10.1136/practneurol-2015-001162. Epub 2015 Dec 16. PMID: 26677204.
[14]Lisa Klevebrant, Andreas Frick.Effects of coffee on anxiety and panic attacks in patients with panic disorder: A systematic review and meta-analysis.General Hospital Psychiatry,Volume 74,2022,Pages 22-31,ISSN 0163-8343,https://doi.org/10.1016/j.genhospppsych.2021.11.005.
[15]Fleming DJ, Jacques PF, Dallal GE, Tucker KL, Wilson PW, Wood RJ. Dietary determiners of iron stores in a free-living elderly population: The Framingham Heart Study. Am J Clin Nutr. 1998 Apr;67(4):722-33. doi: 10.1093/ajcn/67.4.722. PMID: 9537620.
[16]Morck TA, Lynch SR, Cook JD. Inhibition of food iron absorption by coffee. Am J Clin Nutr. 1983 Mar;37(3):416-20. doi: 10.1093/ajcn/37.3.416. PMID: 6402915.
[17]Surma S, Oparil S. Coffee and Arterial Hypertension. Curr Hypertens Rep. 2021;23(7):38. Published 2021 Aug 9. doi:10.1007/s11906-021-01156-3
[18]Surma S, Oparil S. Coffee and Arterial Hypertension. Curr Hypertens Rep. 2021 Aug 9;23(7):38. doi: 10.1007/s11906-021-01156-3. PMID: 34370111; PMCID: PMC8352830.
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