Unit 25 Flashcards

Dietary Supplements and Functional Foods

1
Q

What is included in the term supplements?

A
  • vitamins and minerals
  • probotics and pre-biotics
  • herbal remedies
  • homeopathic remedies
  • traditional medicies such as traditional chinese medecines
  • other products like amino acids and essential fatty acids
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2
Q

What are supplements called by health canada?

A

natural health products

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3
Q

Do supplements have vigorous testing by FDA or health Canada?

A

no

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4
Q

What does canadian legislation require natural health products to have?

A

a natural product number (NPN)

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5
Q

What is the USP dietary supplement verification program?

A

voluntary program open to manufacturers of dietary supplement finished products from around the world

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6
Q

Do manufacturers have to manafacture a supplement/drug product to the pharmacopoeial standard?

A

No, it can be to the manufacturers own standard

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7
Q

What are some regulations aorund natural health products?

A
  • need to contain the ingredients listed on the label, in the declared potency and ammounts
  • cannot contain harmful levels of specified contanminants (lead and mercury, microbes, pesticides
  • will break down and release into body within a specified amount of time
  • has been made according to FDA current Good Manufacturing Practices using sanitary and well-controlled procedures
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8
Q

Is vitamin E better absorbed as a supplement or food?

A
  • natural is more rapidly absorbed and maintained in tissue (2x as potent)
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9
Q

Is vitamin C better absorbed as a supplement or food?

A

They are both the same (natural and synthetic have same potency)

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10
Q

What should you take a multivitamin with for better absorption?

A

meat

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11
Q

What should you take iron supplements with for better absorption? What should you avoid?

A
  • take with meal or glass of juice
  • avoid taking with tea or coffee
  • if anemic – not at same time as Ca
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12
Q

What should you take calcium supplement with to increase absorption?

A
  • calcium carbonate with a meal
  • Ca + vitamin D a good idea in winter and if no multivitamin is taken n(vitamin D helps Ca set in bones)
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13
Q

Should you divide large doses of calcium?

A

Yes

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14
Q

What are some functions of whey protein?

A
  • improving sport performance
  • immunomodulation
  • antibacterial, antiviral and antifunal activity
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15
Q

What are the main organs affected with abusive use of protein supplements?

A
  • liver
  • skin – acne
  • kidney
  • microbiota
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16
Q

What does creatine do?

A

increase bioavailability of phosphocreatine in muscle cells

  • faster resynthesis of ATP
  • brief high intesnity exercise
17
Q

Can the body synthesize PCr?

A

yes from amino acids

18
Q

Do vegtarians have higher or lower PCr stores?

A

Lower, may benefit more from supplementation

19
Q

What is the recommendation for creatine supplementation?

A

~0.3 g/kg/day of creatine monohydrate for 5-7 days followed by 3-5 g/day after to mainatin elevated stores

20
Q

What are some potential safety concerns of creatine?

A
  • kidney and liver function
  • muscle injury
  • supress natural creatine synthesis
  • promote dehydration and muscle cramping
21
Q

Is creatine considered safe and beneficial?

A

yes

22
Q

What do omega-3 supplements help with?

A
  • heart health
  • autoimmune diseases
  • depression
  • brain development in infancy
23
Q

What are some negative side effectrs of very high doeses of omega 3 supplement such as fish oils?

A
  1. high blood sugar
  2. bleeding
  3. low BP
  4. diarrhea
  5. acid reflux
24
Q

Why do people take herbal supplement?

A
  • considered natural and therefore healthier and safer
  • for a specific condition or general health
25
Q

Are herbs effective?

A
  • many have health benefits
  • lacking well controlled research studies
  • short-term and long term risks an benefits??
26
Q

Is kombucha considered safe?

A
  • acidosis from excess acid can occur in persons with underlying conditions such as diabetes
  • ethanol value vlaues in excess of 0.5% can also be of concern to toddlers and infants and during pregancy

need to be careful with handling of kombucha

27
Q

What are some considerations to take into account before taking herbal supplements?

A
  • may interact with prescription medications and over the counter drugs
  • advise doctor or pharmicist of all herb use
  • take for only a short period of time
  • follow label instructions
  • if unsual side effects, stop immediately
  • do not take in place of conventional medecine for chronic conditions
  • not for children under 12, pregnant or lactating women, kidney or liver damag, immunocompromised (elderly or HIV), undergoing surgery
27
Q

What are probiotics?

A

live microorganisms which when administered in adequate amounts confer a health benefit on the host

28
Q

What are prebiotics?

A

substrates selectively utilized by host microorganisms that confer a health benefit (food for the microbes that provide health benefits)

29
Q

Are pre/probiotics considered safe?

A

yes, but may cause problems in some

30
Q

What are some side effects of probiotics?

A
  • unpleasant digestive symptoms
  • allergic reaction
  • fillers might cause allergic reaction
  • infection and sepsis in susceptible people
  • interaction with some medicines
31
Q

What are some side effects of prebiotics?

A
  • unpleasant digestive symptoms
  • gastroesophageal reflux
  • worse sytmptoms of IBS
  • not recommended for people with small intestinal bacterial overgrowth
32
Q

Should you take supplements over the RDA?

A

no

33
Q

Betacarotene supplements can increase risk of which cancer?

A

lung

34
Q

Should you take supplements for a prolonged period of time?

A

No, only for a short period