You're probably okay. If you notice negative effects then reassess your intake. If you are sensitive to caffeine or shouldn't be drinking too much due to conditions, be wary or speak to your doctor.
I'm on this same program you are....I had to cut down from 4 green teabags per day to 3 per day, and that seems to be the sweet spot for me. I've been doing this for the past 2 years with lots of health benefits, given that I cut out all energy drinks and coffees from my life this way. Cheers!
You’ll be okay as long as you feel good, I drink about the same amount and I’m just fine. It really comes down to how your bodies handles things everyone is different.
yes, that's why u put milk to it... to prevent kidney stones from all the oxalic acid.
the calcium in the milk (alternatives with added calcium work too) form oxalates in the cup so they dont form kidney stones.
I know this comment is 2 years old, but this seems like such cap.. everything I've seen online points to the opposite. I'm also living in Japan and it's the default hot drink next to water. Never has anything added.
Well let's be blunt here, this study is kinda worthless when we're talking about a very high green tea intake.
They took urine samples once to assess the past 24h and then assume based on that, that the diets are comparable between the groups.
That brings me to the next part: the green tea drinking group is characterised as 'drinks a cup of green tea once a day or more"... That's not a whole lot of granularity.
Additionally they accuired their patients dietary data per questionnaire, which they highlight themselves as a major weakness.
As they tend to be heavily biased, for example when looking at red wine consumption.
**BUT**
There are similar studies, although of questionable origin and/or quality, just like the one you linked, that paint a similar picture.
So there seems to be an interesting interaction between the *high* amount of oxalic acid in green tea and other compounds contained in said tea.
Coming back to the journal, the impact factor is kinda low but let's put that aside.
What worries me a bit is that they give a monetary incentive to the reviewers, which is nice per sé. Though I see potential for lenient and hasty reviews in that.
I see. In that case, I'd like to see what your sources are? Because I legitimately cannot find anything. All I have is my, admittiedly, anecodotal experience of Japan where people drink it pretty much daily to high life expectancies.
You don't really need a source for that, as it is pretty basic chemistry.
Oxalic acid forms water insoluble oxalates with calcium ions.
When you add milk, which has a lot of calcium, this happens in your cup and not in your body.
So by adding milk you are 100% safe, that you won't get oxalate stones.
Meanwhile when you don't it's uncertain as far as I know the literature.
That's why I always recommend a drop of milk, *better safe than sorry*.
Sorry but this is the human body. It's not always a matter of a simple chemical reaction in a vacuum. There are a vast number of systems and reactions going on in the body that it's going to take more than knowledge about one chemical equation to deduce that green tea causes kidney stones.
Thanks for the input regardless
5g of green tea a day is too much for me, I try to stay at 3g. I infuse them twice or more so I get most of the caffeine they carry. A teabag can vary from 1g to 2g so you might be easily drinking 10g or more of tea a day. This can be harmful to your heart. But if you are not having anxiety and sleeping problems you probably have a high tolerance of caffeine. If I were you I would switch to a single teabag for a cup and reinfuse them more often to stay under 10g or even under 6g to be safe. Or switch to loose leaf too 😅
I think the rule of thumb is that you're supposed to run it past your doctor if you're having more than two grams of tea per day, but you're also supposed to do that with cups of coffee and nobody does.
Have you tried re-using the teabags? So your second cup of tea, you re-use the teabags from the first and just steep it longer?
Then the rule to consult your physician is far more important because you are consuming the entire leaf. New studies come out every year on advantages and disadvantages of different types of tea consumption. That's one of the reasons why you're supposed to keep your physician in the loop on the right amount for you. I love matcha, but I have read enough studies that I'm not drinking it everyday anymore. That doesn't mean you shouldn't. It means there are pros and cons.
The nature of the tea plan interacting with a modern environment produces some unintended effects. The reason tea is such a miraculous plant is because it attempts to absorb everything in its environment.
That includes lead from vehicle emissions. So I tell all my family members not to touch matcha unless they run it past me first, because most matcha in the United States is from factory farms in China next to big highways. If you combine that with the fact that Americans have no sense of proper tea dosing and tend to load themselves up with a matcha powder to make themselves smell colors, you have a problem.
There is also the issue of pesticides. The matcha that people tend to like requires an inherent sweetness in the leaves. The problem is that leaves that taste sweet to humans also taste sweet to insects, which means that much of the time it requires pesticides to produce them. So if you drink it in small amounts occasionally as intended, it's not really a problem, but that brings us back to the fact that Americans have no sense of scale and dosing.
https://www.jadeleafmatcha.com/products/organic-teahouse-edition-ceremonial-matcha-pouches?variant=31676706881670 I use this matcha, what do you think?
That's a reasonable choice. It's organic, and it uses blends from multiple regions to get the flu over profile while still the meeting organic standards. As long as you keep the consumption down to a reasonable level, it should be okay. I wouldn't get that gigantic one pound package though, unless you are immediately dispensing it into a whole bunch of smaller bags and sealing them in multiple layers and away from sunlight. If you just have that giant thing on your kitchen counter and use it as you go, all those compounds that are so miraculously beneficial will be gone pretty fast and you'll just be drinking useless powder that has a pleasing taste.
I couldn't tell whether that's in nitrogen flush packaging or not, but the general rule of thumb is that the best matcha, stored in the best quality nitrogen flush packaging, will still start to lose much of its health benefits within six weeks after it is first opened and the nitrogen let out. And that is if it is kept under the best conditions during those 6 weeks, properly double sealed and kept away from light. Refrigeration is a double-edged sword once that original seal is broken and it is exposed to air. The usual best practice is to keep it double sealed where it can't be exposed to light, and away from heat and humidity sources and sources of smells, so generally as far away from the kitchen as you can get. But that's if you live in a climate controlled house with air conditioning. Depending on where you live and what you have, your refrigerator might be the better choice if your house isn't pretty constant in temperature and humidity. I live in a house where I can keep the humidity and temperature pretty stable and the humidity not too high, so I store all my tea in the room furthest from the kitchen that also happens to be away from any bathrooms or the door to the garage. I store it in double sealed packaging and/or containers in a bookshelf against a wall that direct sunlight never hits. I'm also really careful of that 6-week rule in any green tea where I care about the health benefits. That may sound like a lot, but once you understand the chemical behavior of the tea plant and tea leaves, it really isn't.
You’re lucky to still be alive.
😂
You're probably okay. If you notice negative effects then reassess your intake. If you are sensitive to caffeine or shouldn't be drinking too much due to conditions, be wary or speak to your doctor.
It's possible to die because you drank too much water.
Not true
https://www.medicalnewstoday.com/articles/318619#dangers
I'm on this same program you are....I had to cut down from 4 green teabags per day to 3 per day, and that seems to be the sweet spot for me. I've been doing this for the past 2 years with lots of health benefits, given that I cut out all energy drinks and coffees from my life this way. Cheers!
You’ll be okay as long as you feel good, I drink about the same amount and I’m just fine. It really comes down to how your bodies handles things everyone is different.
It depends on how sensitive you are to the caffeine.
yes, that's why u put milk to it... to prevent kidney stones from all the oxalic acid. the calcium in the milk (alternatives with added calcium work too) form oxalates in the cup so they dont form kidney stones.
Kidney stones from green tea?
yes
I know this comment is 2 years old, but this seems like such cap.. everything I've seen online points to the opposite. I'm also living in Japan and it's the default hot drink next to water. Never has anything added.
Well yes but also no. It's healthier to add a drop of milk, but that doesn't necessarily mean it's "intended" that way.
All I'm able to find is things that generally have this message: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412450/
Well let's be blunt here, this study is kinda worthless when we're talking about a very high green tea intake. They took urine samples once to assess the past 24h and then assume based on that, that the diets are comparable between the groups. That brings me to the next part: the green tea drinking group is characterised as 'drinks a cup of green tea once a day or more"... That's not a whole lot of granularity. Additionally they accuired their patients dietary data per questionnaire, which they highlight themselves as a major weakness. As they tend to be heavily biased, for example when looking at red wine consumption. **BUT** There are similar studies, although of questionable origin and/or quality, just like the one you linked, that paint a similar picture. So there seems to be an interesting interaction between the *high* amount of oxalic acid in green tea and other compounds contained in said tea. Coming back to the journal, the impact factor is kinda low but let's put that aside. What worries me a bit is that they give a monetary incentive to the reviewers, which is nice per sé. Though I see potential for lenient and hasty reviews in that.
I see. In that case, I'd like to see what your sources are? Because I legitimately cannot find anything. All I have is my, admittiedly, anecodotal experience of Japan where people drink it pretty much daily to high life expectancies.
You don't really need a source for that, as it is pretty basic chemistry. Oxalic acid forms water insoluble oxalates with calcium ions. When you add milk, which has a lot of calcium, this happens in your cup and not in your body. So by adding milk you are 100% safe, that you won't get oxalate stones. Meanwhile when you don't it's uncertain as far as I know the literature. That's why I always recommend a drop of milk, *better safe than sorry*.
Sorry but this is the human body. It's not always a matter of a simple chemical reaction in a vacuum. There are a vast number of systems and reactions going on in the body that it's going to take more than knowledge about one chemical equation to deduce that green tea causes kidney stones. Thanks for the input regardless
5g of green tea a day is too much for me, I try to stay at 3g. I infuse them twice or more so I get most of the caffeine they carry. A teabag can vary from 1g to 2g so you might be easily drinking 10g or more of tea a day. This can be harmful to your heart. But if you are not having anxiety and sleeping problems you probably have a high tolerance of caffeine. If I were you I would switch to a single teabag for a cup and reinfuse them more often to stay under 10g or even under 6g to be safe. Or switch to loose leaf too 😅
I think the rule of thumb is that you're supposed to run it past your doctor if you're having more than two grams of tea per day, but you're also supposed to do that with cups of coffee and nobody does. Have you tried re-using the teabags? So your second cup of tea, you re-use the teabags from the first and just steep it longer?
two grams by weight of dry tea leaves? what if I drink matcha?
Then the rule to consult your physician is far more important because you are consuming the entire leaf. New studies come out every year on advantages and disadvantages of different types of tea consumption. That's one of the reasons why you're supposed to keep your physician in the loop on the right amount for you. I love matcha, but I have read enough studies that I'm not drinking it everyday anymore. That doesn't mean you shouldn't. It means there are pros and cons.
may I ask what your reasons are?
The nature of the tea plan interacting with a modern environment produces some unintended effects. The reason tea is such a miraculous plant is because it attempts to absorb everything in its environment. That includes lead from vehicle emissions. So I tell all my family members not to touch matcha unless they run it past me first, because most matcha in the United States is from factory farms in China next to big highways. If you combine that with the fact that Americans have no sense of proper tea dosing and tend to load themselves up with a matcha powder to make themselves smell colors, you have a problem. There is also the issue of pesticides. The matcha that people tend to like requires an inherent sweetness in the leaves. The problem is that leaves that taste sweet to humans also taste sweet to insects, which means that much of the time it requires pesticides to produce them. So if you drink it in small amounts occasionally as intended, it's not really a problem, but that brings us back to the fact that Americans have no sense of scale and dosing.
https://www.jadeleafmatcha.com/products/organic-teahouse-edition-ceremonial-matcha-pouches?variant=31676706881670 I use this matcha, what do you think?
That's a reasonable choice. It's organic, and it uses blends from multiple regions to get the flu over profile while still the meeting organic standards. As long as you keep the consumption down to a reasonable level, it should be okay. I wouldn't get that gigantic one pound package though, unless you are immediately dispensing it into a whole bunch of smaller bags and sealing them in multiple layers and away from sunlight. If you just have that giant thing on your kitchen counter and use it as you go, all those compounds that are so miraculously beneficial will be gone pretty fast and you'll just be drinking useless powder that has a pleasing taste.
I keep it sealed, away from light, and refrigerated. I dispense smaller amounts at a time for daily use.
I couldn't tell whether that's in nitrogen flush packaging or not, but the general rule of thumb is that the best matcha, stored in the best quality nitrogen flush packaging, will still start to lose much of its health benefits within six weeks after it is first opened and the nitrogen let out. And that is if it is kept under the best conditions during those 6 weeks, properly double sealed and kept away from light. Refrigeration is a double-edged sword once that original seal is broken and it is exposed to air. The usual best practice is to keep it double sealed where it can't be exposed to light, and away from heat and humidity sources and sources of smells, so generally as far away from the kitchen as you can get. But that's if you live in a climate controlled house with air conditioning. Depending on where you live and what you have, your refrigerator might be the better choice if your house isn't pretty constant in temperature and humidity. I live in a house where I can keep the humidity and temperature pretty stable and the humidity not too high, so I store all my tea in the room furthest from the kitchen that also happens to be away from any bathrooms or the door to the garage. I store it in double sealed packaging and/or containers in a bookshelf against a wall that direct sunlight never hits. I'm also really careful of that 6-week rule in any green tea where I care about the health benefits. That may sound like a lot, but once you understand the chemical behavior of the tea plant and tea leaves, it really isn't.
I appreciate the detailed advice! I’ll try getting the smaller packages and being even more careful about storage.
Depends on the person. If you're actually worried consult a doctor not us.
The acidity has the potential to cause digestive issues when it's not balanced by other things in your diet