Chapter 14 - Evaluating the efficacy of herbs and supplements Flashcards

1
Q

Why is advertising treatments bad if they don’t work and they’re not safe.

A

People waste money. People might get hurt, including when people delay getting effective treatment.

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2
Q

Multivitamins act as ___.

A

Coenzymes.

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3
Q

What do coenzymes do?

A

They help chemical reactions occur.

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4
Q

What is a vitamin?

A

An organic molecule that the body cannot make itself.

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5
Q

What were multivitamins intended for originally?

A

To supplement dietary vitamins and minerals.

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6
Q

What percent of the population uses vitamins?

A

25% to 50%

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7
Q

Four general classes of multivitamins

A
  1. RDA multivitamins
  2. RDA multivitamins/minerals
  3. High potency formulas.
  4. Specialty formulas for specific conditions.
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8
Q

What do experts recommend?

A

Eat right and take a multivitamin daily, based on the health benefits of folic acid for birth defects and Vitamin D and calcium for prevention of osteoporosis.

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9
Q

What is the rationale behind thinking that vitamins might held a wide variety of conditions?

A

Many chronic diseases have risk factors that relate to oxidative damages and inflammation. Some vitamins are antioxidants. In vitro studies show favourable effects.

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10
Q

Do multivitamins decrease the risk of cancer?

A

Maybe in some groups but in general they do not.

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11
Q

Do multivitamins decrease the risk of stroke?

A

No.

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12
Q

Do multivitamins decrease the risk of death?

A

No.

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13
Q

Do multivitamins decrease the risk of heart attack?

A

No.

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14
Q

When multivitamins do have benefits, where are they coming from?

A

Particular components of the multivitamin. Specific vitamins.

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15
Q

Do multivitamins prevent cancer, heart attack or other ailments in heathy people?

A

No.

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16
Q

Specific groups of people ___ from vitamins.

A

may benefit.

17
Q

Natural sources of vitamin C

A

Fruits and some vegetables.

18
Q

Scurvy

A

Connective tissues start to get soft so your teeth fall out. You also get bruising. Can cause death.

19
Q

How do you prevent scurvy?

A

With vitamin C

20
Q

What would a RR = 1.05 mean?

A

A 5% increased risk of death.

21
Q

Does vitamin E protect against prostate cancer?

A

No.

22
Q

Does vitamin E protect against CV disease?

A

No.

23
Q

What is chondroitin thought to do?

A

Lessen arthritis pain.

24
Q

Combined therapy of chondroitin and glucosamine appear to be…

A

beneficial in patients with moderate to severe pain.

25
Q

Is folic acid effective for?

A

Helping the development of a fetus.

26
Q

Is folic acid effective for preventing CV disease?

A

No.

27
Q

How do you decide whether to believe the claims for supplements?

A

Look for the most reliable scientific evidence, such as Cochrane reviews, systematic reviews, and meta-analyses.