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Vitamin C and Fat Soluble

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Be familiar with table H11-1: Antioxidants and chronic disease risk and which antioxidants decrease risks of disease.

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6 years ago

Date created

Mar 1, 2020

Cards (11)

Section 1

(11 cards)

Be familiar with table H11-1: Antioxidants and chronic disease risk and which antioxidants decrease risks of disease.

Front

1. Vitamin C - coronary heart disease, breast cancer, colorectal cancer, GI cancer, LUNG CANCER 2. Vitamin E - PROSTATE CANCER 3. Beta-carotene: chd, lc, crc, pc, gic, lc, pc 4. Carotenoids: lc, crc, pc 5. Fruits/veggies - chd, bc, crc, gic,

Back

What physical properties of vitamin C enable it to work as an antioxidant?

Front

-can donate 1-2 electrons to stabilize free radicals -protects tissues from oxidative stress -loses electrons easily

Back

What are the symptoms and effects of scurvy?

Front

-gums bleed easily around the teeth -capillaries under the skin break spontaneously -muscles degenerate -skin becomes rough and scaly -fractures in bones develop -scar tissue does not form -anemia/infections -hysteria/depression -sudden death: massive internal bleeding

Back

Explain how antioxidants help protect our body from the damages of free radical.

Front

-copper, selenium, manganese, zinc (donate 1-2 electrons to free radicals, thus decreasing their productivity) -Vitamin E: defends body lipids -Beta-carotene: defends lipid membranes -Vitamin C: protects skin and blood fluid

Back

What are some factors that can lead to free radicals production in the body?

Front

-generated from environmental/physiologic factors -smoking, drugs -UV radiation, pollution -processed foods -inflammation (immune response)

Back

Describe how free radicals affect the body in 3 ways and what they can lead to.

Front

1. Cell damage 2. Disease progression 3. Aging -attack polyunsaturated fatty acids, turn them into lipid radicals -attack DNA/RNA, resulting in altered DNA/RNA, thus resulting in the absence or excess of specific proteins -attack proteins, alter them, impair cell function/inflammatory response *sometimes helpful in immune responses

Back

Know the prescribed dietary strategies for preventing heart disease.

Front

-use unsaturated fats instead of saturated -select foods rich in omega-3 fatty acids -high consumption of fruits, vegetables, nuts, whole grains (low consumption of redefined grain products) -supplements not recommended; may INCREASE risk (usually no benefit)

Back

What is a free radical? Antioxidant?

Front

Free Radical: compound with one or more unpaired electron; predisposed to steal electron from vulnerable compound Antioxidant: neutralize free radicals; defend body against oxidative stress

Back

What are some of the effects of oxidative stress?

Front

-reduced cognitive performance -cancer and heart disease -arthritis and cataracts -diabetes -impacts body's natural defenses/repair systems

Back

Know what food sources contain Vitamin C.

Front

-fruits/vegetables (potatoes) -citrus fruits -bell pepper -broccoli -strawberries

Back

Name the complications with vitamin C toxicity.

Front

-diarrhea -GI distress -interference with medical regimes

Back