/sci/ - Science & Math

>>11650995
Green tea only and you're fine.

>>11650999
>>11650995
Tea usually has high amounts of fluoride, which lowers your IQ. Drink several cups daily for years and it may have a detectable effect.

>>11650999
Why are the other ones worse?
>>11651051
Source? Not on the fluoride content obviously

>>11650999
And specifically Japanese green tea. That is quite different from Chinese green tea. Also enjoy with serenity and tranquillity.

>>11653085
Also remember to serve with Omochi.

>>11653085
weebs are so fucking retarded

>>11653440
You literally can't guarantee the quality of most of the stuff that comes out of china. Food included

>>11653440
Why should we believe anything from someone who cannot even be bothered to work the shift key?
Also: 126 million Japanese.

>>11650995
Yes
I don't see why there's a discrepancy between coffee and tea though. They're basically the same thing.

>>11650995
>The internet has finally realized that coffee is bloat
Source?

>>11651051
What kind of broscience is this? Tea drinking cultures (Asian) have the highest IQs

>>11653085
>>11653385
>>11653456
Blessed
https://www.youtube.com/watch?v=Sh6xRBG-LlU

>>11653719
Please leave this board

>>11653676
literally nothing alike

>>11651051
flouride consumption always bothered me

however there are herbal teas with no flouride

>>11653801
>literally nothing alike
[citation needed]

>>11653815
>They're basically the same thing.
[citation needed]

>>11653801
>however there are herbal teas with no flouride
Which?

>>11650995
Green tea makes me feel alive. It’s like I’m drinking a potion. Very nice

>>11653676
Tea has less caffeine and there are many compounds in tea that coffee doesn't have. The most famous one is theanine
>Able to cross the blood–brain barrier, theanine has reported psychoactive properties.[28] Theanine has been studied for its potential ability to reduce mental and physical stress,[29] improve cognition,[30] and boost mood and cognitive performance in a synergistic manner with caffeine.
That said, there are many shared compounds between coffee and tea, like phenols and tannins, but they occur in different concentrations.

My grandmother drank tea every day of her life and she died.

Take that for what it means.

Drink mate, faggots.

>>11653710
Maybe not the whole internet, but 4chan has seen a surge of skepticism towards coffee lately.

>In preliminary long-term clinical studies, black tea consumption showed evidence for providing a small, reduced risk of stroke,[31][32] whereas, in another review, green tea and black tea did not have significant effects on the risk of coronary heart disease.[33] Two reviews of randomized controlled trials concluded that long-term consumption of black tea slightly lowers systolic and diastolic blood pressures (about 1–2 mmHg), a finding based on limited evidence.[34][35] A 2013 Cochrane review found some evidence of benefit from tea consumption on cardiovascular disease, though more research is needed.[34]
https://en.wikipedia.org/wiki/Health_effects_of_tea

>>11653719
>taking asian government reported iq test as fact
asians have low iq on par with SA.

drink water you fucking retards
if you're fucking tired in the morning then clearly you needed more sleep dipshit

Seems we have to watch out for Lapsang Souchong, if we are to believe the EU. Supposedly we cannot trust the Chinese to prepare this type of tea so it now has to be smoked in Europe. And one shop now calls it "Smoking" and it does not taste anything like proper Lapsang Souchong. Shocking.

>>11654006
What is he up to these days? Wasn't he in rehab again?

>>11651051
where did you get that info? I've never heard of that. Besides, which sorts of tea contain fluoride anyway?

>>11654525
>which sorts of tea contain fluoride anyway?

"All tea leaves contain fluoride; however, mature leaves contain as much as 10 to 20 times the fluoride levels of young leaves from the same plant.[9][10]"

"The fluoride content of a tea leaf depends on the leaf picking method used and the fluoride content of the soil from which it has been grown; tea plants absorb this element at a greater rate than other plants. Care in the choice of the location where the plant is grown may reduce the risk.[11] It is speculated that hand-picked tea would contain less fluoride than machine-harvested tea, because there is a much lower chance of harvesting older leaves during the harvest process. A 2013 British study of 38 teas found that cheaper UK supermarket tea blends had the highest levels of fluoride with about 580 mg per kilogram, green teas averaged about 397 mg per kg and pure blends about 132 mg per kg. The researchers suggested that economy teas may use older leaves which contain more fluoride. They calculated a person drinking a litre of economy tea per day would consume about 6 mg of fluoride, above the recommended average dietary intake level of 3–4 mg of fluoride per day, but below the maximum tolerable amount of 10 mg of fluoride per day.[12] Brick tea, made from fallen leaves, old leaves and stems has the highest levels.[13]"
https://en.wikipedia.org/wiki/Health_effects_of_tea#Fluoride_exposure


TLDR: All (real) tea contain fluoride, but higher quality tea contains less. Teabags contain the most (and it is extracted better from dustings), and you'd have to drink a litre of it every day to exceed the daily recommended fluoride threshold.

>>11654765
>All (real) tea
Camellia Sinensis

Honestly, I'd be more worried about heavy metal contamination of the soil. China has a serious air pollution problem and all that particulate finds it's way into the soil and inevitably in all tea grown in China

>>11650995
Coffee is fine unless you get addicted enough to drink it at every possible time.
What are some /sci/ approved teas and brands?

>>11655865
>What are some /sci/ approved teas and brands?
Loose leaf > Matcha > Teabags
Only one type of leaf > Blends
Unscented > Scented

>>11654793
There are two varieties, Camelia Sinensis sinensis, and Camelia Sinensis assamuensis. That diagram fail to explain Darjeeling tea.

>>11654765
manual labourers/athletes already exceed the flouride recommendation just from drinking water
a couple cups of tea on top of that can't help

>>11653850
chamomile, lavendar, licorice are pretty close to zero

Here's a reference
https://data.nal.usda.gov/system/files/F02.pdf

But even shit in your food like gingner, garlic, cinnamon, nutmeg has a tiny amount. It's all about quantity rather than getting 0ppm flouride

>>11657657
does it matter that it's an 'organic' form of fluoride rather than the fluoride effluent from industrial processes?

>>11657656
Yes, it's a problem in many countries and depends on the natural water supply. Both too little and too much fluoride is a problem. Some countries even supplement their water.

A major source of fluoride is toothpaste and other dental products like mouthwash. I would be wary of dropping the fluoride toothpaste though.

>>11658643
Not sure that is a good comparison since you are not meant to drink the tooth paste.

>>11650995
I drink English breakfast it’s pretty good. Caffeine amount is just right

>>11654006
based

>>11654353
>whites are better than blacks, our IQ tests are infallible and put us at the top
>no no no, asians aren't smarter than us. they just cheated on the IQ test!
>maga_brainlet.jpg

>>11659228
Builder's tea?

>>11651051
>which lowers your IQ
Anyone have a source on that?

>>11659325
>trying to deny the literal open cheating culture that china fosters
shut the fuck up you literal retard

>>11654765
>above the recommended average dietary intake level of 3–4 mg of fluoride per day, but below the maximum tolerable amount of 10 mg of fluoride per day.
wow anon you missed that huh

Just drink beer dumbass.

>>11660896
Oh, nice! Thanks!

>>11650995
Honestly, Tea is garbage. Just try substituting hot water and tell me it doesn't taste better

>>11658613
the flouride they put in the water isn't even pharmaceutical grade, it comes straight from aluminium manufacturing. western nations have a bad habit of letting big industrial lobby groups convince their government that whatever toxic byproduct they have is good for their health

>>11654006
Based

>>11660662
>source
just trust me bro

Theanine, which is found in tea increases alpha frequency brain waves (state associated with meditation)
https://www.ncbi.nlm.nih.gov/pubmed/18296328

Caffeine decreases alpha and theta frequencies
https://www.ncbi.nlm.nih.gov/pubmed/18296328

>>11653085
>china even has inferior tea

>>11661022
>the flouride they put in the water isn't even pharmaceutical grade, it comes straight from aluminium manufacturing
Does it matter when it is so diluted? What is the extraction process? Can there be other things than aluminum in there?
>western nations have a bad habit of letting big industrial lobby groups convince their government that whatever toxic byproduct they have is good for their health
That's scary in general

>>11661423
Lobby groups of any kind are scary in general.

When the amount of influence on government decisions is equal to the purchasing power of your lobby group, that is when only corporate/industrial special interests are served.

>>11661423
Lobby groups of any kind are scary in general.

When the amount of influence on government decisions is equal to the amount of financial power behind your lobby group, that is when only corporate/industrial special interests are served.

For me, it's coca tea

>>11661452
Scary! How can we avoid it?

>>11662068
Swiss type democracy and improved transparency. A minimum requirement to become a member of the legislative body would also help.

How do you prepare your tea?

>>11664744
I use pic. related. Works well.

>>11664744
>Microwave cold water for 3 minutes
>pour hot water into tea steeper - pic related
>wait 3 minutes
>tea steeper drains from bottom into cup - pic related
>rinse old leaves and toss outside

>>11664744
>Microwave cold water for 3 minutes
>pour hot water into tea steeper - pic related
>wait 3 minutes
>drain tea steeper from bottom into cup - pic related
>rinse tea strainer and toss leaves/rinse water outside, toilet, or in compost

>>11664997
>Microwave cold water for 3 minutes
You know that can explode and hurt people badly, right?

>>11665228
I've done this thousands of times enough to know how to avoid super heating.

It can only happen if the glass is so perfectly clean that it has no nucleation sites for water vapor bubbles to form. A fingerprint or 2 inside the mug is enough to prevent it from happening. But I've done it enough times to know how much water (same size mug really) and how much time it takes to start boiling and make sure it's not that long.
B4 I learned how to estimate the proper microwave time I would drop a spoon into the mug, and watch the water explode as it boils over. Fun times.

>You know that can explode and hurt people badly
Your right. Should have added "Don't try this at home kids™"
**viewing this post means you have legally agreed never to sue me**

>>11665253
>Your right. Should have added......
in all seriousness tho, plz be careful when you microwave.
While it doesn't explode it can boil over quickly when you grab the mug and burn your hand. Dropping a spoon in the mug is really a good safety if you try this yourself.

Apparently it somehow lowers the amount of iron in the blood (I know that because I tried to give my blood but they told me I was at the lower limit, and that coffee and tea could cause it)

>>11664914
Comfy!
>>11664997
I like the microwave idea!

The gaiwan is a bit of a hassle. It takes some practice not to burn your fingers and you have to concentrate.

>>11664997
>>11665302
Please don't microwave the water for tea, I know that using an electric boiler or a microwave is much easier and faster but it ruins the taste of the water. If besides the healthy effects you also want to go for the taste buy a normal metal boiler (I bought mine at IKEA for like 10 euros) you will actually feel a better "texture" and "taste" of the water itself.

>>11653085
lol I'm not here to judge anyone's tastes but japanese tea literally tastes like feet

>>11654347
lol the best way to improve heart healths it so take a 20 minute walk every day.

>>11665228
If you don't know about it,sure. I love seeing the water freak out and start boiling as the tea bag gives it nucleation sites.

>>11665311
>literally tastes like feet
Ever try valerian root tea?
Some people say it helps with anxiety and sleep, but it literally has same chemical components that make smelly feet smell bad. Some will smell flowers, but all I smell is hot stinky foot juice.

>>11665329
Yeah some things literally taste like feet and rotten peas

>>11665307
Thank you for the warning. That's what I tend to use.

>>11665311
I haven't tasted feet, but I really like the taste of japanese green tea like sencha or gyokuro

>>11653801
>>11653835
>literally nothing alike
Trace compounds dissolved in water on the order of 99.9999 water, trace compounds are similar including caffeine, antioxidants, volatiles, pigments, and many other besides. Ergo tea and coffee are quantitatively very similar.

>>11665364
you're welcome

>>11665369
lol me neither, again though, it's just a taste. I like gorgonzola cheese for example, and that's literally
molding cheese

>>11650995
>coffee is bloat
Are you retarded? the internet doesn't know shit. Coffee is very good for you physiologically.

>>11665264
I used to take supplements to help with my lifting and I'm pretty sure I overdosed on iron constantly since my nose would bleed periodically. Apparently drinking like a liter of coffe and tea a day probably saved my life if what your saying is correct.

>>11665672
maybe you're tasting the umami flavor?
it's a flavor invented by the Japanese that's described as savory or like meat.

Japanese green tea is known having this strong flavor. It's because it has a high concentration of theanine that gives it that flavor. Some people will buy theanine powder (particularly on/sci/) and put it in their coffee or drink as a study aid or cognitive booster. >>11661360

>>11665610
maybe you're tasting the umami flavor?
it's a flavor invented by the Japanese that's described as savory or like meat.

Japanese green tea is known having this strong flavor. It's because it has a high concentration of theanine that gives it that flavor. Some people will buy theanine powder (particularly on/sci/) and put it in their coffee or drink as a study aid or cognitive booster. >>11661360

>>11665722
I don't really know, that's possible though

>>11665687
Men don't need to supplement with iron, we get enough from normal sources. Avoid any multivitamins that have iron, it's very easy to overdose from it. It's women who need to take iron as they bleed every month.

yes but still nothing, next to the coffee

>>11650999
All tea is good for you, and everything healthy about green tea is found more in white tea. Drink whatever tea you like though. You could also make a case for puerh as particularly good since its microbial fermentation gives it effects like a low-grade statin.

>>11653801
>herbal teas
Makes as much sense to call something like chamomile "herbal coffee" as it does herbal tea. Tea is the name of a specific plant, not a style of drink

>>11665262
If you tap a spoon to the side of the glass it is enough to start nucleations, gently. If you see foaming it is too hot.
Perfect smooth surfaces are not required, ordinary smoothness from new glasses and ceramic mugs are smooth enough to allow for superheated water.

>>11653085
all I've done since coronavirus started is drink Japanese green tea and read textbooks. I love my life.
Try out Oku Yutaka Organic Sencha from o-cha.com

>>11661409
China has oxidized teas like Oolongs and Puerhs, but Japanese green tea is just on a different level

>>11650995
if it wasn't grown in china or india then it should be fine

>>11661409
Not really, but if you have no idea what you want, it makes sense to pick Japan for green tea, india for black tea and china for anything else. (Keep in mind that chinese black teas may be labelled red and black tea is an entirely diffeent kind)

>>11665311
>>11665363
>>11665364
>>11665369
>>11665610
>>11665722
>>11665307
The water itself is also important. It seems black tea needs very soft water to brew properly, while green teas need some mineral content.

>>11667340
Yeah absolutely, one thing I forgot to mention is not using tap water for brewing tea, I always use bottled one

>>11667324
>india for black tea
Indian black tea is dog shit. It's grown without care for how astringent and unsophisticated the flavor is because it's the tea that everyone mixes sugar, milk, and spices into. Pretty much always used for tea bags and low-quality blends. If you just want to drink black tea, Chinese black tea is great

>>11667979
>Indian black tea is dog shit.
Really? I find Darjeeling is rather nice. You can also get Darjeeling type tea from Nepal too but both are rather expensive.

>>11668130
If fresh leaves are the best a TGFOP quality Darjeeling would be safe.
Is there a list of fluorides in the various tea growing regions? I could not find any.

>>11654019
coffee is just a drink, stop overthinking it

>>11654006
Yeah so cool it comes from the same continent as badass cocaine yeah alright!
No.

>>11660876
Asians in Western countries also score higher moron

>>11665311
>japanese tea literally tastes like feet
That is really strange. Was it mouldy? There should be a slight aroma of fresh hay, if anything.

>>11654353

>>11671729
Nah man straight out of the box, no mold

>>11671959
OK, what type? Sencha, matcha...?

>>11650995
>t. drinker
Coffee is great, and it's never impacted my health in a negative manner.

>>11672851
The negative health effects are mild for those who experience them (quite a lot of people), and the positive effects (if any) tend to be even milder. I want to investigate whether the same can be said about tea.

>>11654765
I drink a litre of cheap black tea with breakfast every day. then another 1-2 litres throughout the day. i have done this all my adult life. also I was clamped and huffed a lot of petrol in my teens.
is there any hope for me?

>>11650995
>The internet has finally realized
That's usually a good enough reason to believe the exact opposite.

>>11674587
Yes, your future is cyan bright

>>11672754
matcha

>>11675372
Matcha is powdery Japanese green tea and very bitter. It makes for nearly luminescent green tea that is straight out of X-Files. Even the Japanese finds the bitterness a bit much and compensate with omochi.
I would rather recommend sencha. And don't make it too strong, it is supposed to be pale yellow, not deep brown like Assam tea, also lighter than Darjeeling tea.

>>11675613
ok thanks