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December 04 2007
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Vitamin C Gives Staying Power to Antioxidants

Those who take lemon juice in their tea may be getting far more of the health benefits, according to a study funded by the National Institutes of Health.

Catechins are naturally occurring antioxidants found in tea; complementing green tea with either citrus juices or vitamin C increases the amount of catechins available for the body to absorb.

Catechins may be responsible for some of green tea‘s reported health benefits, such as a reduced risk of cancer, heart attack and stroke. But catechins are relatively unstable in the intestines meaning that less than 20 percent of the total generally remains after digestion.

Citrus juice increased available catechin levels by more than five times, and vitamin C increased recovered levels of the two most abundant catechins by six-fold and thirteen-fold.

Lemon juice caused 80 percent of tea‘s catechins to remain available.

Mario Ferruzi, the study’s lead author, is currently conducting an in vivo study (study on a live organism) to find out if increased levels of intestinal catechins will actually translate to higher levels of absorbed catechins in your body.

Sources:


Dr. MercolaDr. Mercola's Comments:

Epigallocatechin gallate (EGCG) is the most powerful catechin found in green tea, and catechins, in turn, belong to the polyphenol family, which are widely acclaimed for disease prevention and anti-aging purposes.  

For centuries, catechins have been known to:

  • Neutralize the effects to your body of harmful fats and oils
  • Inhibit bacteria and viruses such as HIV, hepatitis, and herpes
  • Improve digestion
  • Protect against oxidation in your brain and liver

The catechin in green tea has even been shown to treat diabetes with the same level of effectiveness as the disastrous drug Avandia, so drinking green tea is certainly one of your healthier beverage options, after pure water. 

The green tea catechin EGCG in particular is a very noteworthy antioxidant; it’s estimated to be 25-100 times more potent than vitamins C and E, and can fight a host of illnesses, including:

One study even found that EGCG might help to neutralize some of the toxins formed by high-fructose corn syrup (HFCS), and help to reduce the association between high-fructose corn syrup and diabetes.

Being able to increase the absorption of this beneficial antioxidant by simply adding some lemon juice is certainly an easy and healthy alternative to taking antioxidant supplements

What You Need to Know About Green Tea and Citrus

When choosing a green tea, be aware that previous research has found high levels of fluoride present in some teas. Fluoride is a toxic substance that can have profoundly negative effects on your body. So if you consume large amounts of green tea for health benefits, you might want to invest some time in researching a brand that is low in fluoride

Also, keep in mind that citrus (which is actually a highly alkalizing food) is also one of the more allergenic foods. Protein types will also usually not do well with citrus, so start with just a few drops to make sure you do not experience any problematic symptoms, such as itching, or gastrointestinal problems.

A Word of Caution Against Vitamin C Supplements

Every nutrient you ingest raises or lowers up to nine other nutrients in your body. For example, taking large doses of vitamin C lowers your level of copper, so if you are already deficient in copper and take high doses of vitamin C, you can compromise your immune system.

Every nutrient needs certain synergistic nutrients, and if you are already low in those synergistic nutrients, taking more of one thing will only further deplete the existing deficient levels, worsening any problems relating to that nutrient’s metabolism.

That said however, as long as you do not take vitamin C supplements but rather add a squirt of lemon juice to your tea, the likelihood of creating a problem should be pretty much nonexistent.

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Community Comments ( 18 )
Comment on this Article
  
  
CSR
[ Joined on 08/07 ] [ Posted on November 16, 2007 ]
9 Points        
   
 
Apprentice User
Perhaps my biochemistry is a little rusty, but I am confused after reading the article. It claims that catechins are unstable in non-acidic environments, but then that only about 20% remain *after* digestion.  The stomach is highly-acidic, shouldn't more remain?  Moreover, although citrus may itself be acidic, it is less acidic than stomach acid, and then on top of that, lemon juice specifically, promotes an alkaline state.  So, the logic is fuzzy and I'm not convinced by the article as to why citrus or vitamin C with tea is beneficial (note that the *article* doesn't convince me, irrespective of my knowledge of the benefits of citrus fruit and vitamin C).  Can anyone clarify the physiology for me?
 [ Reply ]
Mercola
  
Russ Bianchi
[ Joined on 09/06 ]  [ Posted on November 17, 2007]
       
   
Savvy User
  Mercola
PPARGammaGirl is CORRECT.
  
  
Russ Bianchi
[ Joined on 09/06 ] [ Posted on November 15, 2007 ]
7 Points        
   
 
Savvy User
Natural citrus prevents and reverse cancer in many forms...Linus Pauling was 100% correct...anyone disputing this is a FRAUD.
 [ Reply ]
  
  
lucylu
[ Joined on 12/07 ] [ Posted on December 4, 2007 ]
5 Points        
   
 
Novice User

My dad is 71 years old, and has taken 10 grams of vitamin C every day for the past 20 years. He is a firm believer in Linus Pauling. He is never sick, takes no prescription medication, has normal blood pressure, cholesterol levels, etc. He exercises somewhat (rides his bike now and then, goes bowling once a week, some gardening) and eats a reasonably healthy diet (loves those Honey Nut Cheerios, though, ugh). He is in excellent health. He nags me about not taking enough vitamin C (I only take about a gram a day). I have a hard time believing that taking vitamin C is somehow damaging, looking at my dad's health.

 [ Reply ]
  
  
sealharvey
[ Joined on 10/06 ] [ Posted on December 4, 2007 ]
5 Points        
   
 
Novice User

How To Live Longer and Feel Better.

By Linus Pauling

To really understand Vitamin C you need to read Pauling's book.

Believe me Vit. C supplementation has to do with evolution

and not restricting your diet to compensate for poor digestion.

 [ Reply ]
  
  
mmc88121
[ Joined on 11/06 ] [ Posted on November 15, 2007 ]
4 Points        
   
 
Moderator User
There is usually a good reason for the food combinations that have been handed down for years. 

Mary
 [ Reply ]
  
  
Cinnabar
[ Joined on 11/07 ] [ Posted on November 17, 2007 ]
3 Points        
   
 
Apprentice User
I use lots of citrus, and my friend told me that consuming it in very large quanitities is "fruitless" (funny), because citric acid cannot be stored long term by the body.  She also said the body will stop using it as effectively when there is a constant supply. 

I think this sounds pretty hoaky, but I am wondering what everyone else has to say about it.  I know citrus is great for infections and immunity, and I know the enzymatic activity has a lot to do with it. I'm not putting down my ginger, honey and lemon drinks.
 [ Reply ]
  
  
Rollybaby
[ Joined on 08/07 ] [ Posted on February 17, 2008 ]
2 Points        
   
 
Novice User

TO VITAMIN C OR NOT VITAMIN C?

--------------------------------------------------------------------------------

I say NO WAY! 97% percent of vitamin C supplements are calcium ascorbate, ascorbic acid, magnesium ascorbate or potassium ascorbate.  Despite marketing claims, these laboratory-produced molecules are not natural vitamin C—far from it.  They are chemically synthesized molecules manufactured in test tubes and often made from genetically modified corn sugar.  These synthetic molecules mimic only one of the numerous life-supporting molecules found in 100% natural vitamin C.

Dr. Szent-Gyorgi won the Nobel Prize in Medicine, in the 1930s for identifying vitamin C and all its many health benefits.  Although he successfully isolated the molecule ascorbic acid in his research, his studies clearly demonstrated the vastly superior benefits of consuming foods rich in vitamin C.  For this reason, even though he discovered ascorbic acid, he did not recommend its use!  In fact, Dr. Szent-Gyorgi affirmed over and over again that the best results occurred when people consumed vitamin C in its natural food form.

We are familiar with many scientific studies demonstrating vitamin C’s important health-enhancing and antioxidant benefits.  What we may not know is that much of this research is conducted using foods high in vitamin C and not synthetic ascorbic acid supplements.  The proven health benefits we all associate with vitamin C are actually created by the intricate interaction of numerous supportive co-factors found only in food, not in isolated, synthesized molecules.  Test-tube vitamin C simply cannot re-create the magnificent synergy of whole-food vitamin C.   This is a significant distinction.  Scientists and healthcare providers consistently emphasize the importance of obtaining ALL our nutrients from fruits and vegetables.  The supplementation theory is a hoax and big business.  Yes I know...  someone will reply with the soil depletion argument...

 [ Reply ]
  
  
curious7
[ Joined on 03/07 ] [ Posted on December 4, 2007 ]
1 Points        
   
 
Apprentice User

For more on the wonders of Vitamin C, Google Linus Pauling.  Mr. Pauling's research indicates some wonderous things about Vitamin C.

 [ Reply ]
  
  
coolhandluke
[ Joined on 11/06 ] [ Posted on December 4, 2007 ]
1 Points        
   
 
Novice User

I'm wondering about the vitamin C in Dr. Mercola's new Multi vitamin.Is it the real thing or just an copy.what about the other vitamins in the multi. What is the origin of those.

 [ Reply ]
  
  
cindyfrancisco
[ Joined on 06/06 ] [ Posted on August 7, 2008 ]
       
   
 
Novice User

GREAT RECIPE:  3 oz of orange juice (freshly squeezed), and 1/2 teaspoon of Matcha Green Tea, add to cocktail shaker w/ several ice cubes.  Shake, shake, shake & poor into juice glass.  You will be amazed at the energy.  I start each day w/ this drink and would never go back to coffee.  (The sugar in the oj is the only downside, but I really watch my sugar intake the rest of the day.)  I know that Jamba juice serves a "Matcha Green Tea shot" just like this, but I am picky about using a high quality Matcha like Muzi or Dr. Mercola's.  

 [ Reply ]
  
  
mohammad kazemi
[ Joined on 11/06 ] [ Posted on December 5, 2007 ]
       
   
 
Novice User

Its better as Dr Mercola says to get Vitamins from natural foods. But you can take better forms of C like the Buffered types or ESTER C which is better.

Happy and Healthy Holidays!

 [ Reply ]
  
  
rmb60
[ Joined on 12/07 ] [ Posted on December 4, 2007 ]
       
   
 
Novice User

A lot more healthy info on Vitamin C is available at www.vitamincfoundation.org/forum

 [ Reply ]
  
  
Fred Potter
[ Joined on 06/06 ] [ Posted on December 4, 2007 ]
       
   
 
Novice User

Vitamin C IS ascorbic acid whether it's got in pill form or in lemons. All else is alchemy

 [ Reply ]
  
  
SKP
[ Joined on 12/07 ] [ Posted on December 4, 2007 ]
       
   
 
Novice User

According to Dr. Blaylock and his research findings, when adding Vit. C or lemon or other citrus to (especially) black, brick or green tea, you increase the absorbtion of the flouride naturally found in those teas. White tea has the lowest amount of flouride.

 [ Reply ]
  
  
seajayp
[ Joined on 06/06 ] [ Posted on December 4, 2007 ]
       
   
 
Novice User

MOST of the Vitamin C is nothing more tyhan Ascorbic acid. Bear in mind that Ascorbic acid is NOT Vitamin C, but merely an antioxidant to keep the real Vitamin C from oxidizing.

 [ Reply ]
Mercola
  
T_rex
[ Joined on 06/07 ]  [ Posted on December 5, 2007]
3 Points        
   
Novice User
  Mercola

Finally ! somebody shedding some light on the issue of ascorbic acid vs vitamin C. I totally agree there's more to vitamin C than merely ascorbic acid. Whoever insists that all vitamin C is is ascorbic acid is just trying to justify that SYNTHETIC ASCORBIC ACID is a perfect substitute and that is all you need. I personally stopped buying the pasteurized orange juice with ascorbic acid added to "restore" the vitamin C destroyed by pasteurization. I eat the raw oranges instead or better yet, kiwiis that contain twice as much vitamin c or even better yet, Guayabas which contain five times as much vitamin C. But beware of guava paste wich is mixed with  SUGAR ! That's because guayabas are not "sweet". I prefer to add the sweetness with mango, or banana, apple or grapes (organic of course) or other naturally sweet fruits. But of course there is also the issue of too much fructose that Dr Mercola brings up, so have to apply moderation. All in all I would say the lowly guayaba is the best source of vitamin C, if you can find it...(there is also the issue of guayaba seeds possibly clogging the appendix, so you have to strain them out...Hello ! issues!)

P.S. Guayabas come from south america but they're very perishable and fragile (unlike the robust kiwii) so that's probably why you never find them in you supermarket.

  
  
dr-sammar
[ Joined on 12/07 ] [ Posted on December 5, 2007 ]
-1 Points        
   
 
This user is BELOW novice level and all their comments need to be reviewed with great caution.

This artick is so interesting , although i don't like tea with lemon, i will try to drink it.]

Thanks Dr. Marcola

 [ Reply ]

 
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Mercola