Doctor's Note

Check out these videos for more on tea:
Hibiscus Tea vs. Plant-Based Diets for Hypertension
Antimutagenic Activity of Green Versus White Tea
Is There Too Much Aluminum in Tea?

And check out my other videos on tea

For more context, see my blog posts: Hibiscus tea: flower powerIs Caffeinated Tea Really Dehydrating? and Schoolchildren Should Drink More Water.

If you haven't yet, you can subscribe to my videos for free by clicking here.

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  • Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on tea. Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

    For an update, check out my blog post Hibiscus tea: flower power.

  • So enjoyed watching so many of your video’s, learned a great deal..thank you!
    Question-what’s your thoughts on WheatGrass juicing? Healthy or Harmful?

    • Toxins

      Hello Trinda, I believe I can help you with your question. Wheat grass, like many other “super foods” have been touted as a super healthy substance. But like many other “super foods”, they turn out more harm than good. For example, check out the Star fruit, mangosteen and several spirulina videos Dr. G posted People claim they are healthy but they cause many health detriments. But regarding wheat grass, what does the science say on the subject? Well, according to a study done on rats, it lowered cholesterol, could help prevent heart disease, and i quote the “Phytochemical analysis revealed the presence of flavonoids, triterpenoids, anthraquinol, alkaloids, tannins, saponins and sterols in fresh wheat grass juice.” It appears as though wheat grass is rich in antioxidants and is health promoting. Digging deeper, we can see that for pregnant woman, wheat grass in fact controls BPA toxicity very effectively. “our data suggested potential detoxification of wheat sprouts on BPA-toxicity via antioxidative and interference of absorption, distribution, metabolism and excretion (ADME)-mediated mechanisms in young women.” Wheat grass is, as far as the data tells, health promoting! (for more on BPA check out this link as well as Dr. Greger’s video on BPA )

  • Jonathan

    Hello Dr. Greger,

    I have been a subscriber for a little while now and vegan for several years. I love the informative videos and articles posted on this site. Well done.

    However, there is one thing I have yet to find on this website (or many others) that I would appreciate if Dr. Greger could comment on; demineralized water.

    I have recently become concerned with the amount of heavy metals and VOCs in my municipal water source and have been looking at reverse osmosis or distillation systems for home water consumption. However, there seems to be some controversy over consuming demineralized water (these two systems remove ALL dissolved solids including beneficial ones like Calcium and Magnesium), as it is said to have negative long term consequences to ones health.

    “For about 50 years, epidemiological studies in many countries all over the world have reported that soft water (i.e., water low in calcium and magnesium) and water low in magnesium is associated with increased morbidity and mortality from cardiovascular disease (CVD) compared to hard water and water high in magnesium.”

    There has been an increase in popularity (that I have even seen expressed though the comments of your subscribers) in only consuming demineralized water. It would be greatly appreciated by not only myself, but many of your subscribers (I assume) if Dr. Greger could address the issue of long term consequences to ones health with the steady consumption of demineralized water.

    Thank you.

  • Hello Dr. Greger. I LOVE your website. Thank you so much for this valuable public service that you provide. It is nothing short of AMAZING!

    On the topic of water- I hear a lot of advice from the holistic community about the importance of drinking water first thing in the morning (not just children, as this video highlights, but everyone in general), but studies are never provided to back up this claim. While this makes sense intuitively, are there any studies to back up this claim?