Thursday, January 26, 2006

Tea, It Does The Body Good

Like most sleep-deprived students, I spend what feels like hours each day waiting in line for my daily dose of caffeine. To keep myself from nodding off, I often reflect upon the drinks that the people in front of me order, enjoying the sneak peek I’m having into their private lives.

A Venti Hot Chocolate with Whipped Cream? I bet she wears “Hello Kitty” t-shirts and squeals whenever she sees a puppy.

One thing I’ve learned from doing this (aside from the fact that people really don’t like being stared at) is that it’s a rare day when someone orders a tea. Now, I’m not talking about a Nonfat Chai Latte or a Green Tea Frappuccino: I’m talking about a good old, plain cup of tea.

In an over-stimulating consumer culture that revolves around the concept of “the individual,” I realize that the idea of plain tea is not all that appealing when other possibilities include Grande White Chocolate Peppermint Mochas with One and a Half Pumps of Syrup.

But in my opinion, there are some pretty clear reasons to opt for the tea. Aside from being delicious, a cup of tea is a lot easier on the wallet and the waistline than a mocha, and ordering a tea saves you from having to shuffle over to the other side of the counter and wait another five minutes while giving the barista your cruelest “where’s-my-frigging-coffee-I’m-late-for-class” look.

But even more importantly, tea is actually quite good for you.

For one thing, tea contains strong antioxidants. Antioxidants act like mops in our bodies, soaking up toxins called free radicals that can, if left to their own devices, cause cellular and genetic damage.

Green and black teas contain particular types of antioxidants called polyphenols, which are so amazing they really should be crowned the Jack Bauer of plant compounds. Scientific studies suggest that polyphenols can lower the levels of “bad” (LDL) cholesterol in your blood, reduce your risk for a heart attack and promote weight loss by suppressing your appetite and increasing your metabolism. (While caffeine is also associated with weight loss, the effects observed from tea go far beyond what is expected from the caffeine alone.)

A polyphenol called EGCg, found in abundance in green tea and half as much so in black tea (but not, however, in coffee), has also been shown to exhibit protective effects against breast, prostate, lung, pancreatic, colon and stomach cancers in animal models. Originally it was thought that the antioxidative activity of EGCg was responsible for this, but research has since suggested that EGCg prohibits cancer development and tumor growth using a number of more specific, but as yet unconfirmed, mechanisms. Some of its effects are only sustained if you drink seven or eight cups of green tea per day though – so drink up.

Green tea has also been associated with increased calmness and concentration, the effect of a particular component called theanine which facilitates the generation of alpha waves in the brain. Alpha waves help reduce stress and anxiety, all the while increasing focus and concentration. Highly creative people produce a lot of alpha waves when faced with a problem they need to solve, for example.

There’s more: tea consumption has been associated with a lowered risk for HIV, arthritis, chronic liver disease, Parkinson’s disease, Alzheimer’s and even bad breath.

Even better, there are no known disadvantages to drinking lots of tea – unless you are trying to have a baby or are already pregnant. EGCg inhibits folic acid, a vitamin necessary for embryo development. But that’s it.

Convinced yet?

I’m still sensing resistance, and I bet I know why: you’re afraid because tea doesn’t have as much caffeine as coffee, right? Yes, it’s true – black tea has about half the caffeine of coffee, and green tea is even a little weaker still, although it depends, of course, on how long the tea is steeped. But I have news for you: research suggests that there is no noticeable difference in how alert one feels after drinking a cup of tea versus a cup of coffee, even though they contain different amounts of caffeine. Although researchers cannot yet explain why this is the case, “caffeine level per se does not affect the short term response to tea or coffee,” the study says.

With all these benefits, it’s no wonder that world-wide tea consumption is estimated to be second only to water. Only America seems to be lagging behind, and maybe it is Starbucks’ fault for marketing the heck out of its coffee drinks (and do you blame them? Check out the profit margins on those things!). But the next time you’re zoning out in the coffee queue, wondering whether you actually have the $4 you need for that latte, consider being good to your body: how about a nice, hot cup of tea?


Blogger GrrlScientist said...

hi melinda! it's good to see you in tangled bank! but it's too bad you weren't in MY issue of TB (the issue prior to the 50th). oh, and since we are talking baout tea, let me say that i am an american, originally from seattle (coffee capital of the USA), who loves tea. my favorite teas are the chai teas, either black or green. and tea does make me feel alert after a cup or two. of course, i also love coffee .. except the crap they sell in most places in NYC! but that's a rant best left for another day.


5:58 AM  
Anonymous Anonymous said...

I Love Green tea it is the best

6:47 PM  
Anonymous Megan said...

awesome! i've always preferred tea over coffee and it's hard to come by amongst other students like ourselves (you are a student, right? haha)

11:10 PM  
Blogger Dr.Gray said...

I always used to love coffee, but when I started working full time and going to school full time (16+ hour days) I found that the coffee combined with my stress level really started to give me some serious heart burn and stomach issues.

It makes me feel old just talking about it. I used to hate tea, but eventually through my girl friend (now my wife) I was exposed to some really good quality teas, especially green teas. I have never gone back to coffee (its been 7 years now).

Even the hardest coffee addict when exposed to some really top quality teas, I think will switch. And their body will thank them for it.

Start off with something like this for those coffee adicts - latte matcha

4:24 AM  

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