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A Functional Nutrition Exam Guides Personalized Wellness

We are as different on the inside as we are on the outside…

Therefore, a personalized approach to assessing and addressing chronic disease risk is imperative.

  • Individual Health Factors: Each person’s unique genetic, lifestyle, and environmental factors significantly impact their health, visible through physical exams and lab biomarkers.
  • Challenges in Detection: Identifying nutrient deficiencies and abnormal biomarker levels is difficult in clinical practice due to limited clinician training, time constraints, and misconceptions about the rarity of these signs.
  • Functional Nutrition Evaluation: Incorporating functional nutrition evaluations can enhance patient screenings and personalized wellness programs, aiding in early detection and prevention of health issues.
  • LIFEHOUSE Study Findings: The Lifestyle Intervention and Functional Evaluation—a Health OUtcomes SurvEy (LIFEHOUSE) study analyzed 369 employees and identified distinct physical and biomarker patterns, helping to recognize early signs that precede chronic non-communicable diseases.
  • Clinical Applications: These identified patterns can assist clinicians in developing diagnostic and therapeutic interventions to prevent the onset of age-related chronic diseases.

Comprehensive nutritional screening and assessment can help identify early dysfunction and preclinical mileposts for non-communicable chronic diseases (NCDs), including heart disease, diabetes, obesity, hypertension, and renal disease. These disorders are often associated with or attributed to aging but are preventable with early and effective intervention.

Early intervention is essential and economical, as 70-80% of health resources are focused on acute responses to established NCDs instead of a more logical approach focused on prevention.

Even in seemingly healthy individuals, recognizable patterns can help identify underlying physiological dysfunction and nutrition insufficiencies caused by a less-than-optimal diet, toxin exposure, genetic factors, and poor lifestyle choices.

A comprehensive approach must include:

  • Physical examination
  • Laboratory biomarkers
  • Anthropometric measures

Components of the Functional Nutrition Evaluation (FiNE); Anthropometric and Clinical Exam

Anthropemetrics

  • Body temperature, blood pressure, pulse, respiratory rate and oxygen saturation. Height, weight, waist circumference, hip circumference, body composition analysis, peak flow, and grip strength
  • Body Composition Evaluation: Body Mass Index, waist to hip ratio, percent body fat, skeletal muscle mass, extracellular water/total body water
  • Body Type: Underweight, desirable weight, overweight, obese, over fat, android body type, gynoid body type

Clinical Exam

Scalp/Hair

  • Distribution: Normal, alopecia areata, androgenic alopecia (female)

Mouth

  • Jaw Movement: symmetric, asymmetric, auscultated crepitus or click, pain, mouth opening >4 cm.
  • Lips: Normal, dry, cracking, angular cracks or sores, ulcerations, fissures, perioral rash, loss of lip borders, other lesions, edema, angioedema, piercings.
  • Soft palate, hard palate, tonsillar pillars: hard palate—normal, cleft or oropharyngeal defects. Soft palate—lesions, symmetry. Tonsil beds and pillars—hypertrophy, regressed.
  • Tongue: size-enlarged, small, shape-scalloping present, color- red, magenta, coating- grade 0, 1, 2 and color, tastebud distribution and prominence, fissuring (longitudinal, transverse, lambda) ankyloglossia, lesions, ventral varicosities, blocked Wharton duct blocked.
  • Gums: normal, lesions, gum line darkening-burtons lines, bruising, lesions, macules, tenderness, gingivitis, periodontal disease, gum hyperplasia.
  • Teeth: Healthy-no restorations, missing teeth, tooth attrition or abrasions, silver/mercury restorations, silver abutting gold restorations, periodontal ligament pain, enamel dysplasia, discoloration (fluorosis) plaque (tartar).

Skin

  • Texture: normal, xerosis, hyperkeratosis pilari, seborrhea, eczematous rash.
  • Color: Normal, acanthosis nigricans, ecchymosis
  • Hair: distribution, swan neck hairs
  • Lesions: normal, acne vulgaris, keratosis (seborrheic, actinic, arsenic),
  • Cancers: basal cell, squamous cell, melanoma, poor wound healing.

Fingernails, Toenails

  • Shape: normal, koilonychia, parrot
  • Color: normal, terry nails, leukonychia
  • Texture: brittle, chipping nails
  • Growth pattern changes: Beau’s lines, longitudinal ridging, nail beading
  • Artificial surfaces: acrylic nails, or polished nails

Neurological exam

  • Monofilament (5.07/10 g)
  • Vibratory sense (128 Hz)
  • Balance
  • Standing (eyes closed)
  • Single-leg stand (eyes closed)
  • Motor- Timed Up and Go
  • Smell test (cranial nerve 1)
  • Taste test (bitter) (cranial nerves, 7, 9, 10)

Statistically Significant Associations (p ≤ 0.05) between Physical Exam/Anthropometric Findings and BioMarkers.

Anthropometrics

Significant Biomarker Patterns

Body composition

BMI < 30.0 v. ≥30.0

BMI ≥ 30.0: increased HbA1c, hs-CRP, TG, LDL particle number (LDLp), and BP; decreased vitamin D, Firmicutes/Bacteroidetes Ratio

BMI < 25.0 v. ≥25.0

BMI ≥ 25.0: increased HOMA-IR, Hgb A1c, hs-CRP, TG, LDLp, BP;
Decreased 25-OH Vitamin D, diminished monofilament sensation.

BMI < 25.0 v. ≥25.0, <30.0 v. ≥30.0

Higher the BMI: increased HOMA-IR, hemoglobin A1c, hs-CRP, TG, LDLp, BP; decreased 25-OH Vitamin D.

Elevated Waist Circumference

Increased HOMA-IR, HbA1c, hs-CRP, TG, LDLp, Increased BP,
Decreased 25-OH Vitamin D, Firmicutes/ Bacteroidetes ratio

Physical Exam

Skin Findings

  • Seborrhea: positive Omega 6, TTG IgG, and tongue coating
  • Hyperkeratosis pilari: positive TTG IgA, TTG IgG, HbA1c, insulin, HOMA-IR, homocysteine, brittle nails; negative omega 6, omega 3
  • Xerosis: positive omega 3, vitamin D, homocysteine
  • Acne Vulgaris: positive TTG IgA, TTG IgG, decreased Firmicutes/Bacteroidetes, insulin, fecal sIgA, leukonychia; negative omega 3, omega 6, hyperkeratosis pilari.

Oral findings

  • Lip Cracking: positive omega 6, leukonychia, brittle nails; negative Omega 3
  • Tongue Coating: positive IgG food allergies, Gliadin IgA, IgG; TG, LDLp, anti-CCP
  • Tongue Fissuring: positive TTG IgG, gliadin IgA, IgG, BP, oral restorations, missing teeth; positive(unexpected) 25-OH Vitamin D, Firmicutes/Bacteroidetes ratio, increased fecal Akkermansia, hs-CRP, RF, anti- CCP, TPO, ANA
  • Missing Teeth/Oral Restorations: positive HOMA-IR, HbA1c, hs-CRP, BMI, BP, decreased vibratory sense, abnormal monofilament test; negative 25-OH Vitamin D

Neurologic Exam

  • Decreased Bitter Taste: positive HbA1c, IgA gliadin, IgG gliadin, increased fecal akkermansia, BP; negative 25-OH Vitamin D
  • Abnormal Smell Perception: positive TTG IgA, TTG IgG, increased fecal akkermansia, Firmicutes/Bacteroidetes ratio; negative 25-OH Vitamin D.
  • Abnormal balance (One Leg): positive TG, % body fat, BMI, hsCRP, TPO; negative: 25-OH Vitamin D
  • Abnormal Balance (Closed Eyes, Two legs): positive anti-gliadin IgA, increased TG, LDLp; negative 25-OH Vitamin D
  • Grip Strength: Weak grip positive association–HOMA-IR; negative 25-OH Vitamin; negative TPO. U-Shaped curve noted for grip strength with BMI.

Abbreviations/Explanations: ANA—anti-nuclear antibody; Anti-CCP—anti-cyclic citrullinated peptide antibodies; BMI—Body Mass Index; BP—blood pressure; LDLp—LDL particle number; F/B ratio—Firmicutes/Bacteroidetes ratio; HbA1c—Hemoglobin A1c; HOMA-IR—homeostatic model assessment for insulin resistance; IgG—immune globulin G; RF—rheumatoid factor; sIgA—serum immune globulin A; TG—triglycerides; TPO—Thyroid peroxidase antibodies; TTG IgA—tissue transglutaminase immune globulin A; TTG IgG—tissue transglutaminase immune globulin G.

Statistically Significant Associations (p ≤ 0.05) between Biomarkers and Physical Exam/Anthropometric Findings.

Biomarkers

Significant Exam Findings

hs-CRP

Positive waist circumference, BMI > 25.0, missing teeth/oral restorations, abnormal one leg balance

HOMA-IR

Positive waist circumference, BMI > 25.0, missing teeth/oral restorations

HgbA1c

Positive waist circumference, BMI > 25.0, missing teeth/oral restorations, no bitter taste

25-OH Vitamin D

Negative waist circumference, BMI > 25.0, no bitter taste, decreased smell, decreased grip strength

Homocysteine > 9.0

Positive Acanthosis nigricans, xerosis

Secretory IgA elevation

Positive eczema

TTG IgG

Positive seborrhea, tongue fissuring, decreased smell

Gliadin IgA, IgG

Positive tongue coating, tongue fissuring, no bitter taste, decreased smell

Triglycerides

Positive BMI > 25.0, waist circumference, decreased one leg balance, abnormal eyes closed two feet balance

LDLp

Positive: BMI > 25.0, waist circumference, abnormal eyes closed two feet balance

Omega 6 levels

Positive: seborrhea, eczema,

Omega 3 levels

Positive: lip cracking, xerosis,

Firmicutes/Bacteroides Ratio

Positive: eczema; negative: BMI > 25.0, >30.0, waist circumference, acne, abnormal smell perception

Elevated fecal Akkermansia

Positive no bitter taste, decreased smell

Notable findings and patterns

  • We noted significant expected associations between normal BMI vs. overweight and obese BMI and metabolic markers (HOMA-IR, HbA1c, hs-CRP, triglycerides, LDL particle number, elevated blood pressure).
  • Paradoxically, being overweight was associated with a decreased firmicutes/bacteroidetes ratio and not associated with Akkermansia levels.
  • Interestingly, being overweight or obese is significantly associated with decreased 25-OH vitamin D levels.
  • Skin findings were frequently significantly associated with essential fatty acids levels.
    • Seborrhea was positively associated with omega-6 fatty acids levels, xerosis was positively associated with omega-3 fatty acids level
    • Both hyperkeratosis pilaris and acne vulgaris were negatively associated with omega-3 and omega-6 levels.
    • Lip cracking was also positively significantly associated with omega-6 levels and negatively associated with omega-3 levels.
    • Greater than 25% of participants had vertical ridging of their fingernails. Whereas vertical ridging can be a normal variant, it is also associated with maldigestion or malabsorption, autoimmune conditions such as rheumatoid arthritis and psoriasis, and peripheral circulatory inadequacy.
  • IgG antibodies were significantly associated with tongue findings—both coating and fissuring as well as skin findings including seborrhea, hyperkeratosis pilaris, and acne vulgaris.
  • Abnormal taste and smell perception and abnormal balance and grip strength were all negatively associated with 25-OH vitamin D levels.
  • Half of our participants with a low BMI (<18.5 kg/m2) had a history of persistent inflammatory gastrointestinal conditions. Chronic inflammatory bowel conditions are associated with an increased incidence of nutrition insufficiency and abnormal biomarkers in over 20% of patients seen in the outpatient clinic setting and clinical malnutrition in 16 percent of IBD patients.

Reference

Stone, Michael et al. “LIFEHOUSE's Functional Nutrition Examination (Physical Exam, Anthropometrics, and Selected Biomarkers) Informs Personalized Wellness Interventions.” Journal of personalized medicine vol. 13,4 594. 28 Mar. 2023, doi:10.3390/jpm13040594 This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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