Name: 10.6 Mineral: Iodine, Zinc, Fluoride, Selenium
Uploaded: 2015-10-10T01:52:07.000Z
Duration: 5 min 46 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

- WELCOME TO THE LAST SECTION IN OUR SERIES ON MINERALS.

IODINE IS A COMPONENT OF THYROID HORMONE.

AND THYROID HORMONE REGULATES GROWTH DEVELOPMENT

AND METABOLISM, SO THIS MEANS THAT IODINE IS IMPORTANT

AND IF WE LOOK AT THIS MAP FROM THE WORLD HEALTH ORGANIZATION,

WHICH WOULD BE THE HIGHEST OCCURRENCE OR INCIDENCE

YOU CAN SEE THERE JUST IN VERY SMALL SECTIONS

BUT VERY LOW OCCURRENCE IN FIRST WORLD NATIONS.

PARTICULARLY SEVERE DEFICIENCY, IS A GOITER.

IF YOU THINK ABOUT YOUR THYROID BEING RIGHT HERE,

AND IF YOU EVER HAD A PHYSICAL EXAM YOU'LL FEEL YOUR DOCTOR

FEEL RIGHT IN THIS AREA TO SEE IF THERE'S ANY ENLARGEMENT.

IS A VERY SEVERE CASE IN ONE OF THE DEVELOPING NATIONS.

WE DON'T SEE THIS MUCH IN THE DEVELOPED COUNTRIES.

CRETINISM IS ALSO ANOTHER RESULT OF SEVERE IRON DEFICIENCY,

ON A LESSER LEVEL, SMALLER, NOT SEVERE DEFICIENCIES,

BUT MODERATE OR MILD DEFICIENCIES CAN BE A

CONTRIBUTING FACTOR FOR BREAST AND STOMACH CANCER,

ACTUALLY, WE GET IT FROM SALT FORTIFICATION.

AND IF YOU LOOK AT YOUR SALT, IF YOU BUY ONE OF THE BIG

CARDBOARD SALT CONTAINERS YOU'LL SEE IT'S IODIZED SALT.

SO THAT MEANS THAT IODINE HAS BEEN ADDED TO SALT AND

THAT WAY NO ONE GETS AN IODINE DEFICIENCY BECAUSE NATURALLY

OCCURRING SOURCES OF IODINE ARE ACTUALLY QUITE RARE.

COD, SEAWEED, SHRIMP, TUNA, OTHER THAN THAT THERE

YOU CAN FIND SOME IN NAVY BEANS AND POTATOES.

AND IF YOU'RE EATING AN ABUNDANT AMOUNT OF

YOU'LL GET LITTLE BITS AND [INAUDIBLE] PROBABLY BE

FINE WITHOUT THE ADDITION OF THE FORTIFIED SALT.

EVEN THOUGH WE ONLY NEED IT IN SMALL AMOUNTS,

A NUMBER OF DIFFERENT FUNCTIONS IN THE BODY.

IT ALSO HAS A ROLE IN MANY OF THE STRUCTURAL FUNCTIONS IN

THE BODY OR WHEN WE THINK OF BUILDING UP PROTEINS,

OVER 300 ENZYMES ACTUALLY DEPEND ON ZINC.

YOU THINK OF IT BEING IMPORTANT IN IMMUNITY AND WOUND HEALING.

AND IT DOES HAVE VERY IMPORTANT ROLES IN THESE AREAS.

BUT IT CAN CAUSE DELAYED GROWTH AND DEVELOPMENT.

ALSO, CAN HAVE IMPAIRED AND NEUROLOGICAL DEVELOPMENT.

AND THIS IS WHAT WE SEE IN A MARGINAL DEFICIENCY.

SO A SEVERE DEFICIENCY IS ACTUALLY GOING TO

BE A STUNTED GROWTH IN NEUROLOGICAL DEVELOPMENT,

BUT VERY MILDER MARGINAL DEFICIENCY YOU MIGHT

SEE JUST A LITTLE BIT OF AN IMPAIRED GROWTH

OR A LITTLE BIT OF AN IMPAIRED DEVELOPMENT.

FLUORIDE IS A COMPONENT OF BOTH BONES AND TEETH.

MOST PEOPLE THINK OF IT AS BEING PART OF YOUR TEETH AND

WHEN YOU THINK OF DEFICIENCY YOU THINK OF CAVITIES;

SO DEFICIENCY OF FLUORIDE IS A RESULT OF THIS,

WHY YOU BRUSH WITH A FLUORIDE TOOTHPASTE.

IT'S CALLED FLUOROSIS AND YOU CAN ACTUALLY

LOOK HERE AND YOU CAN SEE THIS WHITE AREA,

AND THAT'S ACTUALLY CALLED A FLUOROSIS OR A FLUORIDE

TOXICITY MEANING THAT YOU'RE GETTING TOO MUCH.

WELL, IT'S ANOTHER FORTIFICATION IN TAP WATER.

THE WATER IS CHLORINATED AND A LOT OF PEOPLE

ARE AGAINST THIS FOR A NUMBER OF REASONS,

BUT NATURALLY OCCURRING SOURCES OF FLUORIDE ARE

Subtitles ListPlay Video

10.6 Mineral: Iodine, Zinc, Fluoride, Selenium

essentially

mental

extremely

debate