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Trace Minerals and Phytochemicals Presentation
By:
Jennifer
Lindsey
Meagan
Kahelia
Trace Minerals– Iron– Zinc– Copper– Cromium– Selenium– Iodine
Phytochemical
Iron(Fe)
Iron Functions
Assistance in the transport of oxygen throughout body to tissues and muscles
Component of certain enzymes– Examples:
• Cytochromes• Part of the antioxidant enzyme system that
fights free radicals
Hemoglobin
Hemoglobin transports oxygen through the blood stream to tissues.
Iron is a component of Hemoglobin Iron binds to the oxygen in our blood
stream Iron releases the oxygen to the tissues
Myoglobin
Similar to Hemoglobin but is found in the muscle cells
Iron is also a component of Myoglobin Iron binds to the oxygen and transports
it into the muscle cells
Cytochromes
This enzyme assists in energy production within the body
Cytochromes are an electron carrier within the metabolic pathways
Food Sources for Iron
Iron is not produced by the body so it must be consumed via food or supplementation
Good sources of Iron in foods are:– Red meat, fish, poultry, lentils, beans, leaf
vegetables, tofu, chickpeas, black eyed peas, potatoes with skin
Two Types of Iron Found in Foods
Heme Iron– This type of Iron is part of Hemoglobin and
Myoglobin– It is only found in animal based food products
Non-heme Iron– This type of Iron is not part of Hemoglobin
and Myoglobin– It is found in animal based foods and plant
based foods
Heme and Non-Heme Iron Cont.
Heme Iron is more absorbable than non-heme Iron
Heme Iron and Vitamin C increase the absorbability factor of non-heme foods
Recommended Dietary Intake Men 19 years and older 8 mg/day Women 19 to 50 18 mg/day Women 51 years and older 8 mg/day Iron consumption needs are high from ages
19 to 50 in women because of menstruation Pregnant Women 27 mg/day The Tolerable Upper Intake Level for 19
years and older is 45 mg/day for male and females
Iron Overdose
Symptoms:– Nausea, vomiting, diarrhea, dizziness,
confusion and rapid heartbeat If Iron toxicity is not reduced quickly
significant damage can occur to the heart, central nervous system, liver, and kidneys. Death could even be a result.
Hereditary Disease Hemochromatosis
– The body absorbs excessive amounts of dietary iron
– Accumulation of iron results in cirrhosis of the liver, liver cancer, heart attack, diabetes and arthritis
– Men have a higher risk of the disease Treatment
– Reducing dietary intake of Iron, avoiding high intake of Vitamin C and withdrawing blood
Iron Deficiency
Anemia– The blood does not contain enough
Hemoglobin to transport oxygen to tissues in the body
– Symptoms:• Fatigue, pale skin, lowered immune system,
impaired cognitive and nerve function and impaired memory
Anemia Treatment Iron supplementation Increase intake of Vitamin C Consume goats milk instead of cows milk Certain foods inhibit absorption of Iron so
these foods should be either avoided or consumed infrequently– Examples: vegetable proteins, calcium,
tannins, legumes, rice, oregano, red wine
Facts
2/3rds of all Iron in body is in Hemoglobin
Iron deficiency is the most common nutrient deficiency in the world
20% of all women of child rearing age are anemic
2% of men have anemia 75% of teenagers have anemia
Zinc(Zn)
Zinc Functions
Assists in the production of Hemoglobin Part of the antioxidant enzyme system
that fights against free radicals Assists in generating energy from
Carbohydrates, Fats and Proteins Assists in activating Vitamin A in the
retina of the eye
Zinc Functions Continued…
Also plays a role in facilitating the folding of proteins into biologically active molecules used in gene regulation
Critical for cell replication and normal growth Important for proper development and
functioning of the immune system Helps maintain sense of taste and smell Needed for DNA synthesis
Food Sources for Iron
Zinc is not produced by the body so it must be consumed via food or supplementation
Good Sources of Zinc in food are:– Red meat, some seafood, beans, nuts,
whole grains, pumpkin seeds, sunflower seeds, whole grains
Recommended Dietary Intake
Men 19 and older 11 mg/day Women 19 and older 8 mg/day The Tolerable Upper Intake Level for 19
years and older is 40 mg/day for male and females
Zinc Toxicity
Does not occur from eating high amounts of dietary zinc
Toxicity occurs from consuming supplements and fortified foods
Symptoms:– Intestinal pain, cramps, nausea, vomiting,
loss of appetite, diarrhea, headache, lowered immune system, reduction in HDL and interferes with copper and iron absorption
Zinc Deficiency
Uncommon in the U.S. Common in countries that consume
mostly grain based foods Symptoms:
– Growth retardation, diarrhea, delayed sexual maturation and impotence, eye and skin lesions, hair loss, impaired appetite, increase in infections and illnesses and mental lethargy
Zinc Deficiency Treatment
Zinc Supplementation Consuming foods high in Zinc
Zinc Facts
30 to 50% of alcoholics are deficient in Zinc
You can purchase Zinc lozenges when sick which may reduce the length of a cold
Copper(Cu)
A trace mineral that functions as a cofactor in many physiological reactions
Copper functions in the body:
Cofactor in the metabolic pathways Increases production of collagen and
elasticity. Part of enzyme system that combats
free radicals. Regulates neurotransmitters important
to brain function
Dietary needs
Present in our bodies from conception, copper helps form a developing infant’s heart, skeletal and nervous systems, as well as arteries and blood vessels
Easy to obtain in a varied of diet Deficiency is rare Low dietary intakes of copper absorb
more copper than people with high dietary intakes
Food Sources for Copper
Beef liver Oysters Lobster Shitake mushrooms Trail Mix Pork and Beans Cashew nuts Garbanzo Beans Lentils
RDA
RDA for men and women– 900 ug/day
UL– 10 mg/day
Copper Deficiency
Occurs most commonly in infants Someone with a disorder that impairs
absorption of nutrients High intake of zinc or iron, can decrease
absorption of copper
Symptoms Fatigue Bleeding under
the skin Damage to blood
vessels Enlarged heart
Diagnosis Based on
symptoms Blood tests that
detect low levels
-Copper
-Ceruplasmin
Treatment of Deficiency
Copper works with potassium and calcium when patients do exhibit low copper levels, then calcium and potassium are frequently on the low side as well.
Taking a 3mg copper pill for one or two months, or less, is all that is needed for an adult to normalize any copper deficiency.
Copper Excess
Any copper not bound to a protein is toxic
- Acidic food or beverages contaminated Consuming small amounts can cause -nausea, vomiting, or diarrhea Consuming large amounts can cause -damage to the kidneys, inhibit urine
production, cause anemia, and even death
Wilson’s disease
An inherited condition Causes the body to retain copper Copper is not excreted by the liver into
the bile If untreated, can lead to brain and liver
damage Studies find that those with mental
disorders have heightened levels of copper in their system
Chromium(Cr)
A mineral humans require in trace amounts
Chromium Functions in the Body:
Enhance the action of insulin Metabolism of glucose Thyroid function Hormonal balance Brain function
Dietary needs Chromium occurs naturally in the environment and
is an essential nutrient Widely distributed in food,
– most food supplies only 2mcg per serving To enhance the mineral’s absorption
– Vitamin C – Vitamin B
Once absorbed, it is stored in – Liver– soft tissue– spleen
Food Sources for Chromium
Broccoli Turkey Grape Juice English Muffin Potatoes Garlic Red Wine Basil
Dairy products are poor sources
RDA Dietary intakes cannot be reliably determined
because the content of the mineral in foods is substantially affected by agricultural and manufacturing processes
Women– 25 mcg per day
Men– 35 mcg per day
50 to 200 micrograms has been proposed by the National Academy of Sciences.
Chromium Deficiency
Causes1. Diets high in simple
sugars2. Infection3. Acute exercise4. Pregnancy and
lactation5. Stressful states
(physical trauma)
Results1. Inhibits the uptake
of glucose by the cells
2. Elevated blood lipid levels
To avoid deficiency
To Avoid Deficiency and Maintain a Good Intake of Chromium:
Avoid sugar and sugar products, soda pops, candy, and presweetened breakfast cereals.
Avoid refined, white flour products, such as white breads and crackers.
Use whole wheat products, wheat germ, and/or brewer's yeast.
Eat whole foods. Take a general supplement that contains
chromium, approximately 100-200mcg daily.
What are supplemental sources of chromium used for?
Type 2 diabetes and glucose intolerance
Lipid metabolism Body weight and composition
Fun Facts
Chromium & Copper: These two elements are the most important nutrients next to calcium and magnesium for their anti-inflammatory properties. They are considered essential to human health.
Chronically elevated copper levels in most patients may result from one-sided diets that lack co-factors, or from the fact that many copper-rich foods are somewhat addictive, such as cocoa/chocolate, coffee or tea
Tissue concentrations of chromium vary considerably in people from different parts of the world, people living in Asia for example being up to five times higher compared to those in people living in the United States.
-These higher chromium levels may be one reason for a lower incidence of diabetes or bone loss in these regions or countries.
Selenium
Function in Our Bodies Trace element nutrient Functions as a cofactor for antioxidant enzymes
called glutathione peroxidases and thioredoxin reductase
Helps regulate thyroid function Essential to good health Helps protect body from poisonous effects of heavy
metals Assists in making antioxidant enzymes, which
prevent cell damage Shown to improve production of sperm
Cont’d Functions
Works with Vitamin E as an antioxidant to help prevent cancer and heart disease
Helps maintain elasticity in tissue Protects against cataracts and macular
degeneration Fights viral infections Helps in treatment and prevention of dandruff
Is it Synthesized?
No, our bodies do not produce selenium We must obtain selenium in our diets
Food Sources Plant foods are the richest dietary source The content in foods depends on the content of the
soil where the plants or animals were raised Animals that eat grains or plants grown in selenium
rich soil will have more selenium in their muscles Can be found in meats, seafood, nuts, cereals, fish,
eggs, bread, broccoli, dairy, fruit
Cont’d Food Sources
Daily Requirement
Age Males and Females
1-3y 20 micrograms/day
4-8y 30 micrograms/day
9-13y 40 micrograms/day
14-18y 55 micrograms/day
19+y 55 micrograms/day
DeficiencyThe following have been associated with selenium
deficiency: Keshan Disease, resulting in an enlarged heart and
poor heart functions Kashin-Beck Disease, resulting in osteoarthropathy Myxedematous Endemic Cretinism, which could
posentially result in mental retardation
Fun Facts Selenium was discovered by Jons Jacob
Berzelius in 1817 in Stockholm, Sweeden Selenium is used in TV, cameras, and
photographic equipment From the Greek work “selene” which means
“moon”
Iodine
Functions in Our Bodies
Protein allows body to stabilize sugars Needed for metabolism of cells Maintain thyroid function Production of thyroid hormones The hormones regulate body
temperature, maintain resting metabolic rate and support production and growth
Is it Synthesized?
No, our bodies do not produce iodine Even though we only require small
amounts, we must obtain it in our diet
Food Sources
Saltwater foods have higher amounts of iodine, such as: kelp, saltwater fish, and shrimp
Iodized salt, white and whole-wheat breads made with iodized salt, milk, and dairy products
Daily Requirement
Age
1-3y
4-6y
7-10y
11+y
Males and Females
70 micrograms/day90 micrograms/day120 micrograms/day150 micrograms/day
RDA Cont’d A ¼ Tsp. of iodized table salt provides
95 micrograms of iodine A 6-ounce portion of ocean fish contains 650
micrograms of iodine Most People are able to meet the RDA by
eating seafood, iodized salt, and plants grown in iodine-rich soil
Deficiency
Goiter, an enlargement of the thyroid gland. Slows down production of thyroid hormones, which leads to hypothyroidism. Some symptoms are:
-Decrease in body temperature
-Increase in weight
-Fatigue
-If pregnant, child is at risk of being born with cretinism
Cretinism, which is preventable mental retardation, will have stunted growth, deafness, and muteness
Fun Facts
Originates from the Greek word “Iodes” meaning “violet”
There isn’t enough salt in the world to cover the continents 500 feet deep!
In the 1920’s iodine was added to American table salt to help prevent hypothyroidism
75% of the iodine we consume is in processed foods
Bibliography
Thompson, Janice and Manore, Melinda; “Nutirition: An Applied Approach”; San Francisco, CA; Pearson Education Inc.; 2006
“Iron Deficiency Anemia”, Wikpedia, http://en.wikipedia.org/wiki/Iron-Deficiency_Anemia
“Iron”, Wikpedia, http://en.wikipedia.org/wiki/Iron “Iron Deficiency”; Centers for Disease Control and Prevention;
August 26, 2006; http://www.cdc.gov/nccdphp/dnpa/nutrition/nutrition_for_everyone/iron_deficiency/
“Dietary Supplement Fact Sheet: Iron”; Office of Dietary Supplements; July 26, 2005; http://ods.od.nih.gov/factsheets/iron.asp
Bibliography Continued
“Zinc”, Wikpedia, http://en.wikipedia.org/wiki/Zinc “Zinc”; Office of Dietary Supplements; December 9, 2002;
http://ods.od.nih.gov/factsheets/cc/zinc.html
Bibliography
http://en.wikipedia.org/wiki/Copper http://www.healthscout.com/ency/68/402/main.html Thompson, Janice and Manore, Melinda; “Nutirition: An Applied
Approach”; San Francisco, CA; Pearson Education Inc.; 2006 http://www.copper.org/health/homepage.html http://www.diagnose-me.com/cond/C595519.html