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  • - WELCOME TO THE FIFTH SECTION IN OUR SERIES ON VITAMINS,

  • AND THE SECTION IS COVERING VITAMIN C. SO YOU USUALLY

  • THINK OF VITAMIN C AS SOMETHING THAT PREVENTS COLDS,

  • WHICH IT DOES AND WE'LL GET TO THAT.

  • BUT VITAMIN C ACTUALLY HAS A RANGE OF DIFFERENT FUNCTIONS,

  • VARIOUS FUNCTIONS.

  • ONE OF THE MAIN FUNCTIONS IS THE MAINTENANCE OF

  • CONNECTIVE TISSUES AND THIS IS BECAUSE

  • IT'S INVOLVED IN THE FORMATION OF COLLAGEN.

  • WHAT'S COLLAGEN?

  • COLLAGEN IS A PROTEIN INVOLVED IN MOST OF THE TISSUES IN

  • OUR BODY AND IF YOU LOOK DOWN AT YOUR SKIN, WELL,

  • WHAT YOU'RE SEEING THERE IS COLLAGEN.

  • AND OF COURSE YOU CAN'T ACTUALLY SEE THE COLLAGEN.

  • AND ALSO IN MANY OF THE OTHER,

  • MANY OTHER CONNECTIVE TISSUES SUCH AS THE TISSUES THAT

  • SURROUND MUSCLES OR THEY CONNECT BONE TO BONE SUCH AS LIGAMENTS.

  • IT'S ALSO INVOLVED WITH A CO-FACTOR

  • IN THE PRODUCTION OF CARNITINE.

  • WE DON'T NEED TO KNOW EXACTLY WHAT CARNITINE IS,

  • BUT CARNITINE IS INVOLVED IN THE TRANSPORT

  • OF FATTY ACIDS INTO THE MITOCHONDRIA.

  • NOW THE MITOCHONDRIA ARE GENERALLY THE WORK

  • HORSE FOR METABOLISM, ENERGY METABOLISM,

  • SO IT'S ESSENTIALLY GOING TO BREAK DOWN

  • THOSE FATTY ACIDS TO GIVE US ENERGY.

  • SO IT'S A CO-FACTOR IN THE PRODUCTION OF CARNITINE

  • WHICH HELPS IN TRANSPORTING THOSE FATTY ACIDS.

  • THE, ANOTHER POPULAR, I SHOULD SAY WELL KNOWN

  • FUNCTION OF VITAMIN C IS AS AN ANTI-OXIDANT.

  • AND WE DO THINK OF VITAMIN C AS AN ANTI-OXIDANT.

  • IT'S THE MAIN, OTHER VITAMIN IT WORKS WITH IS ACTUALLY VITAMIN

  • E AND IT RESTORES VITAMIN E TO IT'S ACTIVE FORM.

  • SO VITAMIN C AND E WORK TOGETHER,

  • VITAMIN E NEEDS VITAMIN C, SO THOSE TWO VITAMINS C AND E,

  • WORK TOGETHER AS ANTI-OXIDANTS.

  • VITAMIN C DOES SUPPORT THE IMMUNE SYSTEM

  • SO IT DOES HAVE AN IMPORTANT FUNCTION

  • IN IMMUNITY AND IT DOES BOOST IRON ABSORPTION.

  • SO WHAT HAPPENS IN DEFICIENCY?

  • WELL IN A TRUE VITAMIN C DEFICIENCY,

  • THERE IS A CONDITION CALLED SCURVY.

  • AND WHAT THIS IS IS A BREAKDOWN OF CONNECTIVE TISSUE.

  • AND IF YOU LOOK AT THIS PICTURE HERE,

  • YOU'LL SEE WHERE THESE BLEEDING GUMS.

  • SO IT'S-- YOU DON'T HAVE VITAMIN C YOU CAN'T MAKE COLLAGEN.

  • COLLAGEN IS PART OF CONNECTIVE TISSUE,

  • SO THAT'S GOING TO BE YOUR GUMS AND

  • YOUR SKINS AND YOUR INTESTINAL [ INAUDIBLE ].

  • SO IF THAT CAN'T BE FORMED WHEN IT GOES TO CHANGE OVERS,

  • EVERYTHING IS CONSTANTLY REMODELING IN YOUR BODY,

  • THERE'S NOT ENOUGH VITAMIN C THERE,

  • YOU CAN'T REMAKE THAT TISSUE.

  • AT THE END OF BLEEDING, BLEEDING GUMS,

  • BLEEDING OUT, OPEN SORES, UNABLE TO HEAL.

  • NOW THIS A WOMAN WITH A TRUE DEFICIENCY AND YOU

  • ACTUALLY DON'T NEED THAT MUCH VITAMIN C TO PREVENT SCURVY.

  • AND IN FACT YOU MAY HAVE READ IN YOUR TEXTBOOKS

  • THE STORY OF HOW THE BRITISH GOT THEIR NAMES,

  • LIMEYS AND IT WAS BECAUSE THEY WERE GOING OUT ON THESE

  • LONG MISSIONS ON BOATS, BUT THEY WEREN'T BRINGING

  • ANY FRESH FRUITS OR VEGETABLES OR IF THEY DID,

  • THEY WOULDN'T LAST, THEY WOULD PERISH.

  • SO THE SAILORS WERE DEVELOPING SORES,

  • BLEEDING SORES, AND SOMEONE WHO FIGURED

  • OUT THAT IF YOU JUST A LITTLE BIT OF LIME,

  • LITTLE BIT OF LIME, SQUEEZE A LITTLE BIT

  • OF LIME THAT IT WOULD PREVENT THIS CONDITION.

  • THEY DIDN'T KNOW WHAT THE CONDITION WAS AND THEY

  • DIDN'T KNOW THERE WAS VITAMIN C IN THE LIME,

  • BUT THEY DID DEVELOP THE NAME LIMEY FROM THAT PRACTICE.

  • THEY STARTED BRINGING BIG BAGS OF LIMES

  • 'CAUSE THEY WOULD NOT PERISH FOR A LONG TIME.

  • SO SUDDENLY A LITTLE BIT OF VITAMIN C

  • COULD HELP PREVENT THIS CONDITION.

  • NOW VITAMIN C IS USED A LOT FOR THE PREVENTION OF COLDS

  • AND IT'S SOLD THIS WAY, IT'S MARKETED THIS WAY.

  • I HAVE PEOPLE TELL ME, YOU KNOW, IT'S WINTERTIME, OH,

  • ARE YOU TAKING YOUR VITAMIN C? AND I ALWAYS TELL THEM NO.

  • BECAUSE VITAMIN C DOESN'T PREVENT COLDS.

  • IT IS IMPORTANT THAT YOU HAVE ALL OF YOUR

  • NUTRIENTS AT ADEQUATE AMOUNTS IN ORDER TO PROTECT YOURSELF

  • AND TO BUILD UP IMMUNITY TO PROTECT YOURSELF FROM COLDS.

  • SO THAT, THAT IS TRUE,

  • BUT THAT EXTRA VITAMIN C HASN'T BEEN SHOWN TO PREVENT A COLD.

  • WHAT IT WILL DO IS ACTUALLY REDUCE HISTAMINE.

  • HISTAMINE IS A CHEMICAL THAT MAKES YOU ITCH.

  • SO WHENEVER YOU HAVE A MOSQUITO BITE,

  • YOU'RE SCRATCHING, THAT'S A HISTAMINE REACTION.

  • THE VITAMIN C CAN REDUCE THAT,

  • SO IT WILL DECREASE THE SYMPTOMS ASSOCIATED WITH A COLD.

  • AND SOME OF THE STUDIES

  • HAVE SHOWN THAT IT CAN REDUCE THE TIME PERIOD

  • OF A COLD MAYBE BY A HALF DAY, NOT DRAMATIC.

  • BUT IT WILL ACTUALLY RECOMMEND THAT

  • YOU TAKE VITAMIN C IN THE WINTER,

  • 'CAUSE IT'S NOT GOING TO DO ANYTHING FOR YOU.

  • AGAIN I DO RECOMMEND THAT YOU HAVE AN ABUNDANCE OF

  • FRUITS AND VEGETABLES TO HELP YOU OBTAIN ADEQUATE

  • AMOUNTS OF YOUR NUTRIENTS AND THAT WILL HELP GIVE

  • YOU A BETTER IMMUNITY AND HELP PREVENT COLDS.

  • BUT OF COURSE EVERYTHING IS YOUR CHOICE,

  • I JUST WANT YOU TO BE EDUCATED ABOUT YOUR CHOICE.

  • AS FAR AS TOXICITY IS CONCERNED,

  • I DON'T HAVE A SLIDE FOR THIS BECAUSE VITAMIN C HAS NOT SHOWN

  • TO BE TOXIC FROM FOOD AND THERE HAVE EVEN BEEN STUDIES OF HIGH

  • DOSE SUPPLEMENTS WHERE WE REALLY HAVEN'T SEEN ANY MORE TOXICITY

  • WITH VITAMIN C. IT USUALLY JUST ISN'T, [ INAUDIBLE ]

  • WE HAVE ENOUGH, IT ISN'T ABSORBED.

  • WE'RE GOING TO FINISH WITH SOME SOURCES OF VITAMIN C.

  • YOU KNOW I PUT THE ORANGE IN THE BIG PICTURE HERE BECAUSE

  • THAT'S WHAT EVERYBODY THINKS ABOUT VITAMIN

  • C AS A GOOD SOURCE BUT THAT'S NOT THE ONLY SOURCE.

  • YOU CAN GET VITAMIN C FROM IT'S GOING TO BE

  • IN SMALL AMOUNTS IN SOME OF THE FRUITS.

  • SO YOU KNOW I HAVE STRAWBERRIES AND

  • KIWIS SHOWN HERE BUT MOST OF YOUR MELONS,

  • CANTALOUPES AND PAPAYAS YOU'RE ALSO GOING TO HAVE THAT ARE A

  • GOOD SOURCE OF VITAMIN C, RED BELL PEPPERS.

  • YOU DON'T-- IF YOU DON'T LIKE CITRUS,

  • YOU DON'T HAVE TO FOCUS ON WHICH

  • FRUIT TO GET ENOUGH VITAMIN C. RIGHT,

  • THAT'S GOING TO BE ALL FOR THIS SECTION OF VITAMIN C.

  •  

- WELCOME TO THE FIFTH SECTION IN OUR SERIES ON VITAMINS,

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B1 中級 美國腔

9.5 維生素:維生素C (9.5 Vitamins: Vitamin C)

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    wenwen 發佈於 2021 年 01 月 14 日
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