Self Care Exam 3

Most bought supplements

Vitamins/Minerals (Top Overall)

Fish Oil

Glucosamine/Chondroitin

Probiotics

Melatonin

the absolute highest predictor of use, regardless of a patient's

actual medical history, objective health status, or concomitant medication use.

Preservation of health

Most patients who use supplements are

increased age, women, college educated, active, higher wealth, western US resident

Top 3 motivations behind using supplements

Improve overall health

Maintain health

P r o m o t e b o n e health

Conventional Drugs

regulated by: FDA CDER

required pre market approval

has to be proven safe and effective before sale

strict purity and potency standards

Dietary Supplements

regulated by: Dietary Supplements

non required pre market approval

product has to be proven unsafe after sale to remove it from market

follows standards for food preparation, cgmp

le DSHEA 1994 Impact:

The Dietary Supplement Health and Education Act (DSHEA) regulated supplements

as food, shifting the burden of safety from proactive manufacturer proof to reactive FDA surveillance.

L a t i n B i n o m i a l

Plant-based products must list

the exact genus/species (e.g.,

Hypericum perforatum) and the

specific plant part used.

Misbranding Risk

Products failing to meet

statutory layout requirements or

making unauthorized disease

claims are classified as

misbranded.

Proprietary Blends

The Loophole: Lists ingredients in

descending order by weight, but

legally hides the exact quantity of

each individual ingredient.

T h e D i s c l a i m e r

Mandatory FDA

Structure/Function warning:

"This statement has not been

evaluated by the FDA.."

Health Claim

Describes reduction in disease

risk.

Example: "A diet with 25g of soy

protein daily may reduce the risk

of heart disease."

Requirement: Explicit FDA Approval

Nutrient Content Claim

Describes relative amounts of a

substance.

Example: "Very low sodium

(<35mg per reference amount).

Requirement: Explicit FDA Approval

S t r u c t u r e - F u n c t i o n C l a i m

Describes maintaining normal,

healthy body function without

specifying a disease.

Example: "Supports healthy

cholesterol levels" (cannot say

"reduces high cholesterol")

Requirement: No FDA approval; requires 30-

day post-market notification and disclaimer.

P r o d u c t i o n Va r i a b l e s a n d Biochemical Vulnerabilities

1. The Source

Final chemical composition is heavily dictated by plant species, growing

conditions, specific plant parts used, and precise time of harvest.

2. T h e Extraction

Methods dictate potency:

• Tinctures: Fluid extracts using alcohol (Caution: avoid in sedated

patients or those on disulfiram).

• Teas: Water-soluble constituents released via steeping/decoction.

Evaporated Extracts: Formulated into standard tablets/capsules.

3. T h e S t a n d a r d i z a t i o n P r o b l e m

The attempt to identify and isolate active chemical markers (e.g., hyperforin

in St. John's Wort) to ensure batch consistency.

Critical Flaw: Standardization has no legal or regulatory definition under DSHEA

Unintentional C o n t a m i n a t i o n

Environmental or process failures introducing:

• Heavy metals

• Microbial contaminants (mold, yeast,

bacteria)

• Pesticides

Intentional (Economic) Adulteration

Deliberate sabotage to fake efficacy or cut costs:

• Substituting cheaper botanical ingredients.

• Illegally spiking products with active

prescription drugs.

• Primary Targets: Weight loss (sibutramine),

sexual enhancement (sildenafil), and

bodybuilding (stimulants).

U S P Ve r i fi e d

• Rigorous standards for purity,

potency, cGMP compliance,

and bioavailability.

• Requires yearly facility

audits.

• Random shelf testing.

ConsumerLab.com (CL)

• Independent testing for

identity and purity.

• Results published publicly

online.

• Requires random testing

every 12 months for seal

retention.

NSF I n t e r n a t i o n a l

• Verifies formulation and

absence of contaminants.

• Features a 'Certified for

Sport' tier.

• G u a r a n t e e s a b s e n c e of 270

banned athletic substances.

Pharmacodynamics (Opposing/Additive) (Interactions)

• Combining natural sedatives (melatonin/valerian) with

CNS depressants.

• Combining natural antiplatelets (garlic/ginkgo/ginger)

with antithrombotics.

• St. John's Wort + L-tryptophan -> Serotonin Syndrome.

Pharmacokinetics (Metabolism) (Interactions)

• St. John's Wort acts as a powerful inducer.

• Induces CYP450 isoenzymes.

• Induces P-glycoprotein drug transporter system.

• Clears concomitant drugs too quickly.

Colloidal Silver overuse

Irreversible blue- gray skin discoloration (Argyria).

Calcium/Vitamin D overuse

Hypercalcemia.

Comfrey/Borage overuse

Pyrrolizidine alkaloid-induced hepatotoxicity.

FDA "Clearly Problematic"

Categories

Treatments for life-threatening

diseases (HIV, Cancer, Alzheimer's).

Weight-loss products (highest

adulteration risk).

Unapproved chelation products.

Oral colloidal silver.

List the four categories in the Food as Medicine spectrum.

Foods associated with health claims recognized by the FDA.

Foods carrying structure-function claims.

Foods for special dietary use.

Medical foods

Which food category requires physician supervision, and why?

Medical foods require physician supervision. They are specially formulated and processed to meet distinctive nutritional requirements of a specific disease or condition, which must be established by medical evaluation based on recognized scientific principles.

List the four levels in the health claims hierarchy from strongest scientific evidence to weakest.

Authorized Health Claims: Require extensive FDA review and "significant scientific agreement".

Authoritative Health Claims: Based on statements from an authoritative scientific body (e.g., NIH or CDC) and also require "significant scientific agreement".

Qualified Health Claims: Used when evidence is emerging or limited; they do not meet the "significant scientific agreement" standard.

Structure-Function Claims: Do not require FDA validation or authorization and lack "significant scientific agreement".

Identify the type of dietary fiber associated with cholesterol reduction and explain the mechanism by which it lowers cholesterol.

Type: Highly viscous, gel-forming soluble fibers (such as beta-glucan, pectin, and psyllium).

Mechanism: The high viscosity of these fibers slows the digestion of food, which in turn slows the absorption of nutrients, including cholesterol.

Describe the three energy systems used by the body during exercise and when each predominates.

Fatty Acid Oxidation (Aerobic System): This is the predominant fuel source for low-intensity activities, such as walking or aerobic jogging, providing about 80% of energy.

Glycogen (Carbohydrate) System: This system takes over as intensity increases (such as running or sprinting) and is the primary energy source for high-intensity exercise lasting up to 2 hours.

Phosphagen System: This system uses stored ATP and phosphocreatine for the highest-intensity short bursts of power lasting less than 30 seconds to 1 minute.

Explain the 60 to 90 minute rule for carbohydrate supplementation during exercise.

Carbohydrate supplementation (such as sports drinks or gels) is generally unnecessary for exercise sessions that last less than 60 to 90 minutes. For exercise exceeding 60 to 90 minutes, it is recommended to consume 30 to 60 grams of carbohydrates per hour to preserve muscle glycogen and delay the onset of fatigue.

What is the recommended protein intake range for highly active adults attempting to increase muscle mass?

For highly active adults who are attempting to increase muscle mass or are involved in intense endurance training, the recommended protein intake is 1.2 to 2.0 g/kg of body weight daily

Describe the two main hydration risks during exercise.

Dehydration: The loss of body water and electrolytes, which can lead to fatigue, confusion, and an increased risk of heat illness.

Hyponatremia: A life-threatening condition caused by overhydration (drinking excessive free water without electrolytes), which dangerously lowers serum sodium levels.

Name two ergogenic aids with strong clinical evidence and describe their primary benefit.

Creatine: This is the most widely used aid with consistent clinical data; its primary benefit is increasing muscle strength and power for short, explosive bursts of activity lasting 30 seconds or less.

Caffeine: Pre-exercise caffeine doses have been shown to improve the duration of endurance exercise and enhance alertness during very long events.

Conventional Foods

Whole, unmodified foods (e.g., apples,

oats) consumed for basic nutrition and epidemiological health benefits.

Modified Functional F o o d s

Foods fortified with isolated bioactive components (e.g., plant-sterol- enriched margarines, calcium-fortified juice)

Meal Replacements

Polymeric oral nutritional supplements (ONS) used for portion control or basic supplementation.

Medical Foods

formulated enteral nutrition for distinctive disease requirements. Requires physician

oversight.

The Health Claims Hierarchy

Authorized Claims

Authoritative Claims

Qualified Claims

Structure-Function Claims

Authorized Claims

• Requirement: Significant Scientific Agreement (FDA pre-approved).

• Example: Soluble fiber from oats and CHD risk.

Authoritative Claims

• Requirement: Backed by US Gov scientific body (e.g., CDC, NIH).

• Example: Whole-grain foods and risk of heart disease.

Qualified Claims

• Requirement: Preliminary, limited evidence. Requires disclaimer language.

• Example: Omega-3 fatty acids and CHD - supportive but not

conclusive research.

Structure-Function Claims

• Requirement: No FDA pre-approval. Cannot mention disease risk.

• Example: Promotes healthy digestion or Supports the immune system

To m a t o e s

Lycopene

• Decreased singlet

oxygen, prostate health.

Berries & Cherries

Anthocyanins

• Cellular antioxidant

defense, brain function.

Cruciferous Veg

Glucosinolates &

Sulforaphane

• Decreased risk of certain

cancers (>0.5 cup daily).

Oats & Barley

Beta-glucan

• Highly viscous soluble

fiber lowering cholesterol

Citrus

Hesperetin &

Naringenin (Flavones)

• Neutralizing free radicals.

Enriched Spreads

Phytosterols

• 2g/day intake for

reducing CHD risk.

I n s o l u b l e F i b e r

Details: (Cellulose, lignin, wheat bran)

• Characteristic: Non-viscous, undergoes negligible fermentation.

• Mechanism: Mechanical irritation of colonic mucosa.

Soluble Fiber

Viscous / Gel-Forming

N o n - Vi s c o u s

Viscous / Gel-Forming

• Details: (Beta-glucan, raw guar gum, pectin,

psyllium)

• Structure: Straight-chain linear polymers that

cross-link.

N o n - Vi s c o u s

• Details: (Inulin, FOS, wheat dextrin)

• Structure: Highly branched polymers.

Cardiovascular Efficacy

(Viscous / Gel-forming)

High intake correlates with 0.85 Relative Risk for

Il-cause mortality and 0.76 RR for CHD

incidence.

• Mechanism: Trapping bile acids/cholesterol.

• Source: Oats, psyllium.

Glycemic Control

(Viscous / Gel-forming)

• Supplementation yields mean decrease of -0.58

in HbA1c.

• Mechanism: Delayed gastric emptying, slowing

glucose absorption.

Gut Microbiome (Non-viscous / Fermentable)

• Mechanism: Rapid fermentation in the colon

supplying food to bacteria.

• Source: Inulin, FOS. (Note: Little effect on

cholesterol or glucose).

Laxation

(Insoluble & Non-fermentable Soluble)

• Mechanism: Increased stool bulk and mucosal

water secretion.

• Source: Wheat bran, psyllium.

Everyday ONS (Self-Care)

• Profile: Polymeric formulas (e.g., Ensure,

Boost).

• Characteristics: 1 to 1.5 kcal/mL. Intact

proteins, normal carbohydrate complexity.

• Use Case: Portion control, basic nutrient

supplementation, healthy alternative to fast

food. Safe for self-directed use.

Clinical ONS (Medical Oversight)

• Profile: Specialty / Disease-targeted

formulas.

• Characteristics: Altered amino acids,

specific fatty acid profiles, extreme protein

density (>25% calories).

• Use Case: Malnutrition mitigation, pre/post-

operative immune modulation, organ failure.

Requires physician/dietitian tracking.

Polymeric Formulas

Status Box: Intact

• Macronutrients in their whole form

(whole proteins, complex carbs, oils).

• Used for patients with normal, fuly

functional digestive tracts.

• Isotonic (300-450 mOs/kg).

Oligomeric Formulas

Status Box: Predigested

• Also known a s peptide or elemental

formulas.

• Contains free amino acids and

hydrolyzed proteins.

• Required for critical illness, severe

malabsorption, or Crohn's disease

exacerbation.

• Poor palatability (usually tube-fed).

Modular Components

Status Box: Isolated

• Single-macronutrient supplements

(e.g., pure protein powder, MCT oil,

glucose polymers) added to

customize specific clinical

targets.

Explain why premature infants have difficulty absorbing macronutrients.

Premature infants have difficulty absorbing macronutrients because their gastrointestinal (GI) tracts are not fully developed, leading to reduced GI function. Key factors include:

Reduced Surface Area: They have shorter small intestines, providing less surface area for nutrient absorption.

Enzyme Deficiency: They often lack sufficient levels of essential digestive enzymes, such as lactase for carbohydrates and pancreatic lipase for fat digestion,.

Bile Acid Deficiency: Their bile acid pool is only one-fourth the size of an adult's, which significantly impairs their ability to absorb fats.

What gestational milestone allows infants to safely coordinate sucking, swallowing, and breathing during feeding?

Infants typically reach the gestational milestone allowing them to safely coordinate sucking, swallowing, and breathing at 33-35 weeks of gestation

Why is whole cow milk contraindicated in infants under one year of age?

· Iron Deficiency: It has a low concentration and poor bioavailability of iron, which is associated with iron-deficiency anemia.

· GI Bleeding: It can cause occult gastrointestinal bleeding due to sensitivity to its proteins.

· High Renal Solute Load (RSL): It contains excessively high levels of protein and electrolytes, which can overtax an infant's immature kidneys.

Describe the three tiers of formula escalation used for protein intolerance.

1. Soy-protein-based formulas: Often used as a first alternative for infants who do not tolerate milk-based formulas or have an IgE-mediated cow milk allergy,.

2. Casein-hydrolysate-based (semi-elemental) formulas: These contain predigested proteins (polypeptides) for infants sensitive to intact milk or soy proteins.

3. Amino-acid-based (elemental) formulas: These consist of 100% free amino acids and are used for infants who are intolerant of even hydrolyzed casein formulas.

List the three micronutrient supplementation recommendations for exclusively breastfed infants and when they should begin.

Vitamin D: 400 IU daily starting within the first few days of life,.

Iron: 1 mg/kg daily starting at 4-6 months of age, often through iron-fortified cereals or supplements.

Fluoride: Required if the local water supply is deficient (<0.3 ppm), starting at 6 months of age.

1. Describe the organizational approach used in the chapter for discussing natural products, and list the three main criteria for selecting which products to include.

The sources use an organ system approach to discuss natural products. The three main criteria for selecting products include whether they have evidence to support their use, are widely promoted (with or without evidence), or present known or theoretical safety concerns.

1. State the purported role of Coenzyme Q10 in the body and name one common condition for which it is promoted, along with a theoretical safety concern related to its use.

It serves as a rate-limiting cofactor in mitochondrial ATP formation, essential for energy production. It is commonly promoted for heart failure (HF) or reducing statin-associated adverse effects. A theoretical safety concern is its potential vitamin K-like procoagulant effects, which may interact with warfarin.

1. Describe the active components in fish oil supplements and summarize the evidence for their use in cardiovascular health, including any FDA-approved claims.

The active components are omega-3 fatty acids, specifically docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Evidence is strongest for lowering triglyceride levels (reductions of 9%-51%), with variable results regarding overall cardiovascular risk reduction. While the sources mention FDA-approved health claims for soy protein, they focus on fish oil's ability to aid in triglyceride reduction rather than listing specific FDA-approved claim text for the supplement itself.

1. List one promoted use for garlic supplements in cardiovascular health and identify a potential drug interaction with anticoagulants.

It is promoted for supporting hyperlipidemia and hypertension. A potential drug interaction involves anticoagulants (like warfarin), which can lead to an increased INR and risk of bleeding.

1. Explain what red yeast rice contains that makes it similar to a prescription medication, and describe a major safety concern associated with its use.

It contains multiple monacolins, including monacolin K, which is structurally identical to the prescription medication lovastatin. A major safety concern is hepatotoxicity (increased liver enzymes), and rare cases of rhabdomyolysis have been reported.

7. State the purported benefits of resveratrol for cardiovascular health and mention one source from which it is commonly derived.

Purported benefits include improved vasodilation, vascular relaxation, and improved cardiovascular risk markers like lipid levels. It is commonly derived from grapes and berries.

8. Describe the proposed mechanism of St. John's wort for mood support and list two important drug interaction concerns (e.g., related to CYP enzymes).

The proposed mechanism involves modulating serotonin, dopamine, and norepinephrine, and potentially activating GABA receptors. It is a potent inducer of CYP3A4 and can also induce other enzymes like CYP2C19 and CYP2C9, leading to significantly decreased drug levels.

8. For melatonin, state its primary role in the body, a common self-care use, and the typical adult dosing range.

Its primary role is regulating sleep and circadian rhythms. A common self-care use is for insomnia or jet lag. The typical adult dosing range is 0.3-5 mg taken 30-60 minutes before bedtime.

8. Summarize the purported benefits of ginkgo for cognitive function and identify a safety risk when used with certain medications.

It may provide modest benefits for cognitive impairment and dementia when combined with conventional medications. A primary safety risk is increased bleeding when used with antithrombotic medications.

8. List two common uses for ginger supplements and explain its safety profile in pregnancy based on available evidence.

Common uses include relief of nausea and vomiting related to pregnancy, motion sickness, or surgery. It appears safe for short-term use in pregnancy; while a large cohort study showed no increase in fetal malformations, a slight increase in vaginal bleeding was noted after 17 weeks.

8. Describe the proposed hepatoprotective mechanism of milk thistle and summarize the evidence for its efficacy in liver conditions.

The proposed mechanism involves antioxidant properties and stimulating liver regeneration through ribosomal protein synthesis. However, evidence for its efficacy in treating liver conditions like hepatitis or cirrhosis is limited, with major reviews finding no significant reduction in mortality.

8. State the purported use of cinnamon in endocrine health (e.g., blood sugar management) and discuss the level of clinical evidence supporting it.

It is used to help lower blood glucose levels. Clinical evidence is contradictory, and the expected effect size on fasting plasma glucose or hemoglobin A1C is typically small.

8. Explain the common use of echinacea as an immune modulator and summarize what the evidence says about its efficacy for upper respiratory infections.

It acts as an immune modulator by targeting the nonspecific cellular immune system to increase cytokine secretion and lymphocyte activity. Evidence for upper respiratory infections is mixed; it shows promise for prevention but conflicting results for reducing the duration of an active cold

8. Describe the mechanism by which cranberry may help with urinary tract health and state the preferred product form for this use.

It works by blocking bacteria (especially E. coli) from adhering to the bladder and urinary tract walls. Encapsulated formulations (~400 mg twice daily) are often preferred over juice to avoid high sugar content.

8. For saw palmetto, state its primary promoted use in men's health and list two potential adverse effects.

Its primary use is supporting men's health for BPH symptoms. Potential adverse effects include GI complaints, fatigue, and headache.

8. Summarize the purported benefits of glucosamine and chondroitin for musculoskeletal health and discuss the mixed evidence from clinical trials.

They are purported to serve as "building materials" for cartilage and inhibit degradation enzymes. Clinical evidence is mixed; some guidelines recommend strongly against them, while others list pharmaceutical-grade versions as first-line therapy for knee osteoarthritis.

18. Describe the anti-inflammatory properties of turmeric/curcumin and name one condition for which it is commonly promoted.

It possesses anti-inflammatory properties by inhibiting arachidonic acid metabolism and proinflammatory cytokines. It is commonly promoted for arthritis and other inflammatory conditions.

19. State the topical use of aloe vera for skin conditions and explain any concerns with oral ingestion.

It is used topically for healing wounds, minor burns, and scrapes. Oral ingestion is discouraged as it can cause laxative effects, electrolyte imbalances (hypokalemia), and has been associated with hepatotoxicity.

19. For black cohosh in women's health, describe its purported use for menopausal symptoms and summarize safety considerations, including potential liver effects.

It is used for menopausal symptoms, such as hot flashes. Safety considerations include mild GI complaints, but liver toxicity is a concern (potentially due to product quality or adulterants), and use beyond 6 months is not recommended.

Low Volume (recreational)

<7 hours a week

Glycogen depletion risk: zero

Intervention: diet alone. Sports products are unnecessary calories.

Moderate volume

7-20 hours a week

Glycogen depletion risk: moderate

Intervention: planned fueling for sessions exceeding 60-90 minutes

High volume (elite)

>20 hours a week

Glycogen depletion risk: high

Intervention: active refueling required, clinical dietitian referral recommended

Dehydration

Triggered by >2% loss in total body weight

Symptoms: fatigue, increased core temp, elevated heart rate, exertional rhabdomyolysis

Hyponatremia

Diluted water intoxication caused by drinking free water without sodium during prolonged (>4hr) events

Symptoms: cerebral edema, potentially fatal

Sports drinks/electrolytes not needed if exercise is

<60/90 mins

If more than 60 mins of exercise how many carbs needed

For intense exercise lasting >60-150 minutes, consume 30 to 60 grams of carbohydrates per hour. Sports drinks should be 6-8% carbohydrates. Energy gels (20-25% carbs) mandate simultaneous water intake.

Creatine

Mechanism: Acts as an energy buffer, regenerating ATP for short bursts of

• Application: Only improves high-intensity, repeated efforts lasting <30 seconds. Useless for endurance.

• Dosing: 5g/day. Loading phases are unnecessary. Causes water retention, not structural muscle changes.

Caffeine

• Mechanism: Counteracts sleep deprivation and improves alertness.

• Application: Proven to improve duration of long endurance events.

No effect on high-intensity sprints.

• Dosing: 2-6 mg/kg. Doses exceeding 9 mg/kg offer zero additional benefit.

DMAA (Methylhexanamine)

Marketed for thermogenesis and weight loss.

Clinical Reality: Associated with cardiac toxicity, acute hepatic failure, and cardiogenic shock. Currently banned.

Ephedra and pseudoephedrine

Found in weight loss blends.

Clinical Reality: Triggers hypertension, cardiac arrhythmias, and seizures. WADA flags urine concentrations >150 mcg/mL.

Steroidal Precursors (DHEA/Aromatase Inhibitors)

Marketed as testosterone boosters.

Clinical Reality: Results in elevated estrogen/estradiol, zero testosterone boost, and triggers immediate WADA doping violations. Beware proprietary blends.

Sports Drinks (e.g., Gatorade, Nuun)

• Formulated for absorption.

• Contain 6-8% carbohydrates and essential electrolytes.

• Designed to delay glycogen depletion during >60 min activities.