Performance Health & Nutrition

Healing Faster Through Evidence-Based Nutrition

A physician-directed, evidence-based nutritional optimization program for orthopaedic surgical patients — built on peer-reviewed research and designed to give every Kayal patient the substrates their body needs to heal.

Clinical Foundation

The Silent Epidemic of Surgical Malnutrition

The majority of patients presenting for orthopaedic surgery are nutritionally compromised — and that compromise is invisible without screening.

A patient with a BMI of 32 can be simultaneously overweight and depleted of vitamin D, zinc, vitamin C, and protein. Standard preoperative labs do not screen for it.

Like diabetes, hypertension, and smoking — malnutrition is a modifiable risk factor. If we find it, we can fix it.

Consequences of Unrecognized Malnutrition

•Wound healing failure
•Surgical site infection
•Prosthetic joint infection (PJI)
•Tendon re-tear
•Need for reoperation
•Prolonged hospitalization
•Excess mortality

Peer-Reviewed Evidence

Malnutrition: An Independent Risk Factor

50%

of surgical patients are malnourished at presentation

Tedesco 2024

OR 2.6

Reoperation risk in malnourished patients

PMC8231356

2–5×

Less quad & hamstring atrophy with perioperative amino acid supplementation

Dreyer 2013, Ueyama 2020

30–55%

Faster return to functional activity with targeted amino acids

EJOST 2024, JBJS 2020

Micronutrient Deficiency Rates · Orthopaedic Trauma (n=867)

75.4%

Vitamin D

56.5%

Zinc

54.4%

Vitamin C

50.5%

Prealbumin

48.5%

Transferrin

35.4%

Vitamin A

PMC8584741

Clinical Urgency

The Muscle Atrophy Timeline

Muscle loss begins within 48 hours of immobilization and accelerates rapidly. Without targeted nutritional intervention, patients face compounding deficits that extend rehabilitation by weeks.

48 Hours

−1.7%

Muscle protein synthesis begins to decline with immobilization

5 Days

−3.5%

Most significant early atrophy window; synthesis drops 50% by 2 weeks

7 Days

−5.5%

Measurable quadriceps volume reduction in healthy young adults

2 Weeks

−14.3%

Post-TKA quadriceps atrophy; 80% of total loss occurs in first 2 weeks

6 Weeks

−18%

Continued atrophy without targeted nutritional intervention

Perioperative amino acid supplementation has been shown to reduce quadriceps atrophy by 2–5× and accelerate functional recovery by 30–55%.

Primary Screening Tool

The Geriatric Nutritional Risk Index

Formula

GNRI = (1.489 × Albumin [g/L]) + (41.7 × Actual Wt / Ideal Wt)

Ideal Weight (Lorentz): Males = 0.75 × Ht(cm) − 62.5 · Females = 0.60 × Ht(cm) − 40

> 98

No Risk

Normal nutritional status

92–98

Moderate Risk

Optimize before elective surgery

< 92

Severe Risk

Consider delaying surgery pending nutritional optimization

Validated in TKA, THA, revision arthroplasty, and spine surgery (PMC12102105, PMC11231559, PMC11815201, PMC10753348).

ERAS Protocol Component

Perioperative Carbohydrate Loading

Traditional NPO-from-midnight protocols send patients into surgery in a prolonged fasted, catabolic state — driving cortisol release, insulin resistance, and depleting hepatic glycogen. This accelerates amino acid diversion to gluconeogenesis and muscle protein breakdown.

ERAS protocols include supervised carbohydrate loading: 100 g complex carbohydrate the evening before surgery and 50 g two hours before anesthesia — placing the body in a fed metabolic state despite surgical stress.

Contraindications: Type 1 diabetes, uncontrolled Type 2 DM, gastroparesis, or conditions affecting gastric emptying.

Length of Stay

1.8 → 1.3 days

−28%

Peak VAS Pain

6.0 → 4.5

−25%

Schedule II Narcotic Use

22.7% → 5.3%

−77%

Bayesian meta-analysis (PMC9726728): ERAS reduces complications by up to 50% vs. traditional management.

Precision Nutrition Science

Free-Form Amino Acids vs. Protein Powder

In recovery science, the focus is shifting from how much protein to which amino acids matter most. Free-form amino acids bypass digestion entirely, delivering substrates directly to muscle and healing tissues.

Feature	Protein Powder	Free-Form AAs
Absorption Speed	Requires full digestion (1–3 hrs)	Immediately bioavailable
Caloric Load	Higher calorie per serving	Minimal calories (~70 cal)
GI Tolerance	May cause bloating/distress post-op	Gut-friendly, no digestive burden
Dosing Precision	Variable amino acid ratios	Exact therapeutic ratios
Insulin Response	Moderate glycemic variability	Glucose-stable, no spikes
Post-Surgical Use	Limited when digestion impaired	Ideal for perioperative window

Leucine / Isoleucine / Valine

Activate mTOR pathway — primary driver of muscle protein synthesis.

Arginine / Citrulline

Nitric oxide production → improved blood flow and wound healing.

Glutamine

Gut barrier integrity and immune function during catabolic stress.

Full EAA Complex

Improves nitrogen balance and reduces muscle breakdown during illness or immobilization.

"Protein feeds the body. Amino acids program it."

Part I · Supplement Science

Core Oral Supplements: The Foundation

#1 Most Researched Supplement

Creatine Monohydrate

Mechanism: Increases phosphocreatine → faster ATP regeneration → stronger PT sessions.
Dosing: 3–5 g/day ongoing (or 20 g/day × 5–7 days loading).
Evidence: 1,000+ human trials. Zero adverse kidney/liver events. Approved by IOC, NCAA, ISSN.

Directly accelerates recovery trajectory post-TJA.

Anti-Catabolic Agent

HMB

Mechanism: Blocks ubiquitin-proteasome muscle degradation pathway.
Dosing: 1.5–3 g/day in 2–3 split doses.
Evidence: Meta-analysis: −0.90 days LOS, 50% reduction in postop complications (PMC12326741).

Must start 2 weeks before surgery for maximum effect.

Complete Muscle-Building Signal

Essential Amino Acids (EAAs)

Mechanism: All 9 EAAs required for sustained mTOR-driven muscle protein synthesis.
Dosing: 10–15 g during/after workout (oral) or IV perioperatively.
Evidence: BCAAs alone cannot sustain synthesis past 2 hours (PMC6766442).

Do NOT offer standalone BCAAs — physiologically incomplete.

Part I · Supplement Science

Supporting Oral Compounds: PT Performance

Whey Protein

Fastest-absorbing, highest-leucine protein source. Triggers mTOR activation within 60–90 min. Contains immunoglobulins for post-surgical immune support.

Evidence: Meta-analysis (7 RCTs, n=591): +0.24 SMD muscle index, +2.31 kg handgrip strength (PMC10421506).

Dosing: Post-workout or post-PT session.

Beta-Alanine

Raises muscle carnosine → buffers lactic acid → patients complete more productive PT reps. Optimized for 1–4 minute activities.

Evidence: Reduces blood lactate by 24%. Cycling output +13% after 4 weeks. Tingling (paresthesia) is expected and benign.

Dosing: 4.8–6.4 g/day for 3–4 weeks to saturate.

L-Citrulline

Precursor to arginine → nitric oxide → vasodilation. Improves blood flow and nutrient delivery to healing tissues. Reduces PT fatigue.

Evidence: Enhanced nutrient/O₂ delivery to post-surgical sites. Reduced perceived exertion during rehabilitation.

Dosing: 3–4 g pure or 5–8 g malate, 30–60 min pre-PT.

Perioperative Amino Acid Protocol

Glutamine: Timing, Dosage & Benefits

Glutamine is the most abundant amino acid in human plasma and skeletal muscle. During surgical stress, demand exceeds endogenous production — making it conditionally essential for recovery.

Phase 1

Pre-Surgical (7–14 Days Prior)

Build reserves & strengthen immune readiness.

Timing · Morning + Evening

•Immune priming
•Gut barrier integrity
•Nitrogen balance optimization

5–10 g/day divided

Phase 2

Immediately Post-Surgery

Support immune defense, wound healing & gut recovery.

Timing · Morning + Midday + Evening

•Stable plasma glutamine during peak stress
•Immune cell fuel
•Tissue repair substrate

10–20 g/day divided for major procedures

Phase 3

Rehabilitation Phase

Preserve muscle mass & accelerate functional recovery.

Timing · Morning + Post-Rehab + Evening

•Muscle protein synthesis support
•Reduced disuse-related atrophy
•Metabolic resilience

5–10 g/day ongoing

Evidence: Nishizaki et al. — HMB + Arginine + Glutamine after TKA improved quad strength and reduced muscle loss. Maykish & Sikalidis — glutamine preserves nitrogen balance during catabolic stress.

Evidence-Based Nutrition

Reducing Inflammation Through Targeted Nutrition

1–2 Weeks

Oxidative stress markers begin to shift

Antioxidant-rich dietary changes show measurable improvement in inflammatory profiles within six weeks (Babio et al.).

4–6 Weeks

CRP & IL-6 begin declining

Dietary interventions with adequate amino acid support show significant reduction in systemic inflammation.

8–12 Weeks

Sustained inflammatory reduction

Mediterranean-style diets significantly reduce hs-CRP, IL-6, and IL-17 across randomized controlled trials.

3–6 Months

Durable metabolic improvements

Long-term adherence produces sustained improvements in inflammatory risk markers and overall metabolic health.

Quality & Safety Standards

Why Third-Party Certification Matters

NSF Certified for Sport®

The leading independent third-party certification recognized by anti-doping agencies, professional leagues, and athlete safety organizations worldwide.

•Manufactured at GMP-audited facilities with annual quality inspections.
•Toxicological review confirms all ingredients are permitted at safe levels.
•Product and label verified — what is on the label must be in the product.
•Tested for 280+ substances banned by major athletic and anti-doping organizations.

Free-Form Amino Acids

Medical-grade, immediately bioavailable — no intact proteins requiring digestion.

Clinically Studied Dosages

Ingredient levels based on published peer-reviewed research, not marketing claims.

Clean Label

Vegan, lactose-free, gluten-free, no sugar, no artificial dyes or flavors.

Third-Party Tested

Independent certification confirms purity, potency, and absence of contaminants.

Low Caloric Load

~70 calories per serving — designed for clinical recovery, not calorie loading.

IV Compounds · Clinical Rationale

Vitamins, Minerals & Specialty Compounds

IV delivery achieves 100% bioavailability — bypassing intestinal absorption limitations for the compounds where it matters most.

Collagen Synthesis

Vitamin C (High-Dose IV)

Rate-limiting cofactor for prolyl and lysyl hydroxylase — no cross-linking means no tensile strength in surgical wounds. 54.4% of ortho trauma patients are deficient.

Why IV: Achieves plasma levels impossible orally due to intestinal absorption saturation.

Cellular Energy

B-Complex (B1–B6)

Enzymatic cofactors for ATP production in fibroblasts, osteoblasts, and muscle cells. Critical for nerve repair (B6) in spine and radiculopathy patients.

Why IV: Anti-inflammatory properties at high IV doses. Bypasses absorption variability.

Nerve & Blood

Vitamin B12

Deficiency impairs myelin sheath synthesis and causes megaloblastic anemia. High-risk: patients ≥65, PPI users, metformin users, vegetarians.

Why IV: Bypasses intrinsic factor pathway entirely — corrects deficiency in gastric absorption failure.

NMDA Antagonist

Magnesium Chloride

Physiological NMDA receptor antagonist — dampens central pain sensitization. Reduces opioid requirements 24–48 hours post-surgery. Also prevents muscle spasm.

Why IV: 6/11 orthopaedic RCTs showed significant pain reduction. Zero toxicity events (PMC6319973).

Bone & Muscle

Calcium Gluconate

Primary structural mineral for fracture healing. Levels drop transiently post-surgery. Must be co-managed with Vitamin D.

Why IV: Reliable correction during the acute perioperative window.

Wound Healing

Zinc Sulfate

Required for 300+ enzymes. Concentrated in epidermis — directly required for wound closure. 68.1% of hip fracture patients are zinc-deficient.

Why IV: IV repletion accelerates correction in deficient patients.

Master Antioxidant

Glutathione

Cannot be supplemented orally — digestion degrades it. Neutralizes surgical oxidative stress. Supports hepatic detoxification of anesthesia.

Why IV: Only IV delivery achieves therapeutic intracellular levels.

Cellular Energy

NAD+

Central coenzyme for ATP production. Declines 50%+ between ages 40–60. Activates sirtuins for DNA repair. Emerging evidence for chronic pain.

Why IV: IV delivery overcomes oral bioavailability limitations.

Fat → Energy

L-Carnitine

Shuttles fatty acids into mitochondria. Without it, the body breaks down muscle protein for fuel — accelerating catabolism at the worst moment.

Why IV: Supports preservation of lean mass during catabolic stress.

Neuropathy

Alpha-Lipoic Acid

Universal antioxidant (water- and fat-soluble). 20 RCTs confirm superiority in neuropathic pain. Regenerates vitamins C, E, and glutathione.

Why IV: IV delivery preferred for neuropathic pain syndromes.

All IV products sourced exclusively from FDA-registered 503B compounding pharmacies.

Part II · Diagnostics

Kayal Comprehensive Nutritional Panel

Category	Tests Included	Clinical Relevance
Amino Acids	Plasma amino acid profile (all EAAs)	Identifies protein deficiency; guides EAA/protein prescribing
Muscle Markers	Creatinine, BUN, Albumin, Prealbumin	Assesses muscle mass, catabolism, protein status
Vitamins	Vit D (25-OH), B12, Folate, B6, C, A, E, Biotin	Deficiencies affecting bone, nerve, immune function
Minerals	Mg (RBC), Zn, Ca, P, Fe/Ferritin, Cu, Mn, Se	Muscle, bone, and immune function deficiencies
Inflammatory	CRP-hs, Homocysteine, ESR	Quantifies systemic inflammation; guides IV protocols
Hormonal	CMP, Testosterone, IGF-1, Insulin, HbA1c	Metabolic health, anabolic hormones, diabetic risk
Antioxidant	Glutathione, CoQ10, ALA	Oxidative stress burden; guides glutathione/ALA protocols
Lipid / Omega	Cholesterol, LDL, HDL, TG, Omega-3 Index	Cardiovascular risk; anti-inflammatory fatty acid balance

Educational Information

Talk with your Kayal physician about nutritional optimization for your recovery.

This page summarizes the clinical and scientific foundation of the Kayal Performance Health & Nutrition Center for educational purposes. All recommendations, screening, and supplementation are made by licensed physicians based on objective diagnostic data and individual patient assessment.