Category Archives: green tea

Green Tea Reduces Total and LDL Cholesterol Levels

Most to the green teas I’ve purchased are brown

Green tea consumption  is linked to reduce incidence of cardiovascular disease. The meta-analysis at hand suggests that the benefits are related to reduced total and LDL cholesterol. I suspect it’s more complicated than that.

Collectively, consumption of green tea lowers LDL cholesterol and TC, but not HDL cholesterol or triglycerides in both normal weight subjects and those who were overweight/obese; however, additional well-designed studies that include more diverse populations and longer duration are warranted.

Source: Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials | Nutrition Journal | Full Text

Steve Parker, M.D.

Steve Parker MD, Advanced Mediterranean Diet

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Tea May Prolong Your Life and Prevent Heart Disease

One of my favorite green teas

For years we’ve been hearing about the potential longevity and cardiovascular benefits of green tea. If memory serves, most of the data comes from Japanese studies. Now a Chinese observational study finds 15–20% reductions in atherosclerotic cardiovascular disease (ASCVD) and death, compared to non-tea drinkers. Most of the participants drank green tea, and they did so at least thrice weekly.

From the European Journal of Preventive Cardiology:

Using large prospective cohorts among general Chinese adults, we have provided novel evidence on the protective role of tea consumption on ASCVD events and all-cause mortality, especially among those who kept the habit all along. The current study indicates that tea might be a healthy beverage for primary prevention against ASCVD and premature death.

Source: Tea consumption and the risk of atherosclerotic cardiovascular disease and all-cause mortality: The China-PAR project – Xinyan Wang, Fangchao Liu, Jianxin Li, Xueli Yang, Jichun Chen, Jie Cao, Xigui Wu, Xiangfeng Lu, Jianfeng Huang, Ying Li, Liancheng Zhao, Chong Shen, Dongsheng Hu, Ling Yu, Xiaoqing Liu, Xianping Wu, Shouling Wu, Dongfeng Gu,

The researchers point out that results may not apply to non-Chinese populations.

Steve Parker, M.D.

h/t to Jan at The Low Carb Diabetic (click link for more details about the study)

Steve Parker MD, Advanced Mediterranean Diet

Click the pic to purchase at Amazon.com. E-book versions also available at Smashwords. com.

Dr Harriet Hall Isn’t a Green Tea Advocate

Most of the green teas I’ve tried aren’t green colored

From her letter to the editor at American Family Physician:

A rigorously scientific analysis of all the green tea research can be best interpreted as telling us there is no good evidence to support its use for conditions such as cancer, weight loss, or cardiovascular disease. The Natural Medicines Comprehensive Database, a resource for evidence-based, clinical information on natural medicines, rates green tea as only “possibly effective.” This rating is below their ratings of “effective” and “probably effective.”3 It raises a number of concerns about safety and interactions with other drugs, laboratory tests, and diseases. Additional concerns are that the dosage from brewed tea is variable, and commercial green tea extracts are classified as “diet supplements” under the Diet Supplement Health and Education Act and are not regulated for safety, purity, and content. Contamination and inconsistency of such products is common. In my opinion, we should not recommend green tea to our patients unless more convincing evidence is found.

Source: More Evidence of Green Tea’s Effectiveness Is Needed – Letters to the Editor – American Family Physician

Steve Parker MD, Advanced Mediterranean Diet

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Is Drinking Tea Healthful?

Green tea isn’t always green

From P.D. Mangan’s new book “Best Supplements for Men“:

Green tea, which is commonly drunk in China and Japan, is associated with lower rates of cancer, about 30% lower in those who drank the highest amounts of green tea compared to the lowest. Deaths from cardiovascular disease were about 25% lower in the highest consumption group versus the lowest. This is of course epidemiological evidence, meaning that it can’t show whether green tea actually prevented disease, or that there’s some other connection such as that heather people drank more green tea.

Laboratory and other evidence, however, provides some good reasons to think that green tea is the real deal when it comes to sides prevention.

A recent study of the elderly in Singapore found tea consumption linked to much lower risk of neurocognitive decline in women and carriers of the “dementia gene” APOE ε4.

P.D. suggests that the health-promoting dose of tea is 3 to 5 cups a day, and black tea may be just as good as green.

Steve Parker, M.D.

 

Found: Another Green Tea That’s Actually Green

Yes!

Yes!

My wife found this “matcha LOVE™” Japanese green tea at Sprouts market. A worker said it’s a favorite of their Japanese ethnic patrons.

I don’t know what she paid for it; at Amazon.com you can get 10 teabags for $12 something (USD). So it’s expensive. Some of the other teas I’ve reviewed here are 18 cents a cup.

The flavor is fine, a bit stronger than many “green” teas I’ve tried. That’s not bad. A nice esthetic bonus is that the brewed tea stayed green to the last drop. Several other green teas I’ve tried turn tan after a few minutes.

Steve Parker, M.D.

Found: Another Green Tea That’s Not So Green

This one is Yamamotoyam Sushi Bar Style Green Tea.

Yamamotoyama sushi style green tea

Yamamotoyama sushi bar style green tea

For $18 USD I got a pack of 90 individual teabags. So, just 20 cents a serving. “Best before” date is September 2018, so I’m assuming it’s relatively fresh, but who knows?

fullsizer

I’ll admit there’s a slight green tint to this drink that is predominantly yellow. Thirty seconds after I removed the teabag, it was simply light tan. Taste is fine.

My recollection of the reviews at Amazon several months ago was that this was going to be a green green tea. I’ll not go through those reviews AGAIN.

Steve Parker, M.D.

PS: I was at a sushi bar four months ago, but drank warm sake instead of tea.

Update December 9, 2016:

I’ve brewed a few more of these teabags and note a distinct greenish tinge to the tea in the cup. After a few minutes it fades to tan. I dissected a teabag and found green tea, indeed.

The dissected bag

The dissected bag

fullsizer-7

Found: Another Green Tea That’s Not Green

Green tea from Carrington Company out of Paramus, New Jersey

Green tea from Carrington Company out of Paramus, New Jersey

I had some hopes for this one since the 20 bags were packed in an air-sealed bag. But alas….

Bix Reports: Tea And Apples Are Good For The Heart 

Green tea

Green tea

The healthful component of tea and apples seems to be epicatechins. Bix, the Fanatic Cook, writes:

“Other good sources of epicatechins, besides apples and tea, include blackberries, broad beans, cherries, black grapes, pears, raspberries, and chocolate. Red wine also contains epicatechins….”

Source: New Study: Tea And Apples Are Good For The Heart | Fanatic Cook

Bix worries about the alcohol in wine causing cancer. Keep your consumption low to moderate and cancer shouldn’t be a problem.

TeaGuardian.com says green and white teas have the most catechins (same as epicatechins, I assume for now).

The study at hand involved Dutch men, so we don’t know if results apply to women. It’s an observational study. The men with the highest epicatechin consumption had a 38% lower risk of death from coronary heart disease compared to the lowest consumers. Perhaps because it was a relatively small study involving only Dutch men, the researcher write that “More studies are needed before conclusions can be drawn.

Steve Parker, M.D.

PS: Have you heard that the Mediterranean diet is also good for your heart?

Maybe I Need to Re-Think This Green Tea Thing

“I have friends who attend matcha tea ceremonies, hire doulas, and go to shaman-led sweat lodges in Tulum.”

Source: American Digest

PS: “Match tea” is a term I ran across in my quest for green tea that’s actually green.

Mission Accomplished: I Found Green “Green Tea”

IMG_3517

It’s light green immediately after steeping; five minutes later it’s more yellowish-green

My first two purchases of green tea looked like brown tea. So next I ordered some Kirkland Ito En Matcha Blend Japanese Green Tea from Amazon.com. I think this tea is actually grown in Japan.

Kirkland is a house brand of Costco, so you may find this tea there.

It has a mild and pleasant taste.

I paid $18 (USD) for a box of 100 and got free shipping, so price per cup is 18 cents.

The box

The box

Steve Parker, M.D.

PS: Brown “green tea”:

Mild, pleasant flavor but may not have the phytonutrients I seek

Bigelow Green Tea

Not to me

Twinings Green Tea