A brief summary of Ayurveda concept of Prakriti - · PDF fileA brief summary of Ayurveda...
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A brief summary of Ayurveda concept of Prakriti
(Reproduced from Prasher B et al J Transl Med. 2008 Sep 9;6:48 - Whole genome
expression and biochemical correlates of extreme constitutional types defined in
Ayurveda with permission) .
Ayurveda, an ancient system of Indian medicine documented and
practiced since 1500 B.C. deals with inter-individual variability for
personalized and predictive medicine (1). In this system, selection of a
preventive and curative regime is primarily based on phenotypic
assessment of a person which includes one’s body constitution termed
“Prakriti”. It is also described to determine an individual’s susceptibility
and prognosis for a disease. Prakriti is a consequence of the relative
proportion of three physiological entities (Tri-Doshas), Vata (V), Pitta
(P) and Kapha (K), which are genetically determined (Shukra Shonita)
and influenced by environment during development (Mahabhuta
Vikara), especially maternal diet and lifestyle (Matur Ahara Vihara),
and age of the transmitting parents (Kala -Garbhashaya). Ethnicity
(Jatiprasakta), familial characteristics (Kulanupatini) and place of origin
(Deshanupatini) are also described to influence development of
Prakriti(see below). In an individual, the tri-doshas work in conjunction
and maintain homeostasis throughout the lifetime starting from
fertilization. Distinct properties and functions have been ascribed to each
Dosha. For instance, Vata contributes to manifestation of shape, cell
division, signaling, movement, excretion of wastes, cognition and also
regulates the activities of Kapha and Pitta. Kapha is responsible for
growth and maintenance of structure, storage and stability. Pitta is
primarily responsible for metabolism, thermo-regulation, energy
homeostasis, pigmentation, vision, and host surveillance. Much as it
would sound surprising, but the Sanskrit version of the modern terms
described above exists in the ancient texts. Some of these have been
provided below. Thus phenotypic diversity in a population, according to
Ayurveda, is a consequence of a continuum of relative proportions of
Doshas resulting in seven possible constitutional types namely Vata,
Pitta, Kapha, Vata-Pitta, Pitta-Kapha, Vata-Kapha and Vata-Pitta-
Kapha. Amongst these, the first three are considered as extremes,
exhibiting readily recognizable phenotypes, and are more predisposed to
specific diseases (See table below).
References
1. Caraka Samhita (Text with english translation). Chaukhamba
Orientalia; 2000.
2. Susruta Samhita (Text with english translation). Chaukhamba
Visvabharati; 2000.
3. Valiathan MS: The Legacy of Caraka. Orient Longman; 2003.
Distinguishing features of three contrasting Prakriti types Vata, Pitta
and Kapha and their disease predisposition as described in the original
text.
S.No Features Vata Pitta Kapha
1 Body frame Thin Medium Broad
2 Body build and
musculature
Weakly
developed
Moderate Well developed
3 Skin Dry and cracked Soft, thin, with
tendency for
moles, acne and
freckles
Smooth and
firm, clear
complexion
4 Hair Dry, thin, prone
to breaks
Thin, oily, early
graying
Thick, smooth
and firm
5 Weight gain Recalcitrant Fluctuating Tendency to
obesity
6 Food and bowel
habits
Frequent,
variable and
irregular
higher capacity
for food and
water
consumption
Low digestive
capacity and
stable food
habits
7 Movements and
physical activities
Excessive and
brisk
Less mobile
8 Tolerance for
seasonal weather
Cold intolerant Heat intolerant Endurance for
both
9 Disease resistance
and healing
capacity
Poor Good Excellent
10 Metabolism of toxic
substances
Moderate Quick Poor
11 Communication Talkative Sharp, incisive
communication
with analytical
abilities
Less vocal with
good
communication
skills
12 Initiation
capabilities
Quick,
responsive and
enthusiastic
Moderate, upon
conviction and
understanding
Slow to initiate
new things
13 Memory Quick at
grasping and
poor retention
Moderate
grasping and
retention
Slow grasping
and Good at
retention
14 Ageing Fast Moderate Slow
15 Disease
Predisposition/Poor
prognosis
Developmental,
Neurological,
dementia,
movement and
speech
disorders,
Arrhythmias
Ulcer, bleeding
disorders, Skin
diseases
Obesity,
diabetes,
atherosclerotic
conditions
Clinical phenotyping and identification of volunteers
A questionnaire for clinical phenotyping (provided below) was
designed on the basis of Ayurvedic literature on phenotypes and
methods of Prakriti assessment as described above. The phenotypic
classification, broadly, takes into account criteria for defining
anatomical features like body built, body frame, size and symmetry of
body parts, physiology, physical endurance and aptitudes. Each of the
questions has multiple options to choose from, each of which further
refers to it being a property attributed to either V, P or K. Besides, the
questionnaire also captures information pertaining to ethnicity, family
history of diseases etc. A total of 850 individuals were screened for their
Prakriti types through interview and independent assessment by two
Ayurveda experts using questionnaire. In order to avoid any
confounding observations due to population stratification the study was
conducted on Indo-European speaking large populations predominantly
from North India. 96 unrelated ethinically matched healthy individuals
with predominance of either Vata (39 individuals), Pitta (29) or Kapha
(28) were identified and included near equal numbers of both genders
and belonged to an age group of 18 – 40 years (mean age ~ 23 ± 4
years).
We also developed an automated software for parsing and calculating
scores of V, P, K in an individual using a 0/1 against V/P/ K for each of
the questions depending on a no or yes answer respectively. Cumulative
scores of V, P and K are calculated for each individual through the
software without the intervention of the Ayurveda expert. On an average
10% of the individuals were of predominant Prakriti types. Vata prakriti
individuals had thin and narrow body frame, weakly developed body
build, with irregular appetite, food and bowel habits, difficulty in
gaining weight, quick at physical activities and less tolerance for cold
temperature. Individuals with moderately developed build, high
frequency of appetite and thirst, perspiration tendency higher than
normal, preference for cold weather, moderately mobile and talkative,
and moderate physical strength were identified as Pitta Prakriti. Kapha
individuals were the ones who had broad body frames with well
developed body build, tendency to gain weight, low appetite and
digestion, preferred to be less mobile, with moderate to less talking, cool
tempered, less forgetful and with good amount of stress tolerance.
.Vital Data
(a) Pulse Rate/min: (b) Blood Pressure (mmhg)
(c) Wrist Circumference (inch)
(d) Waist Circumference (inch) (e) Hip Circumference (inch)
(f) Forearm measurement (inch)
(d) Body frame by Wrist finger ratio
Systolic Diastolic
(g) Waist-Hip ratio
(h) B.M.I.
Personal information
Language and Ethnicity
Gender
Age
Height
Weight
Family history of Disease
Questionnaire for Prakriti evaluation
Shape
Regu
lar
Irreg
ular
Symmetry
Prop
ortio
nate
Disp
ropo
rtion
ate
Length/Height Breadth
Med
ium
Long
Thin
/ Na
rrow
Med
ium
Broa
d
Too
Long
Too
Shor
t /
Body Frame Body Build
HeadForeheadFaceEyebrowsEyesLipsJawsShoulderChestHandsPalmsNailsLegsSolesJoints
A-1
A. Anatomical FeaturesA. Anatomical Features
Size / Bulk / Musculature
Small / Weakly developed/ thin
Medium / Moderately developed
Large / Big / Well developed
JointsFaceEyesEyebrowsEyelashesLips
Body Build
A-2
Scalp hairNature Growth /Bulk
Thick Graying DenseThin Falling ScantyCoarse Breaking ModerateHard None BaldSmooth Dry
OilySoftNormalStraightSeasonal/VariableWavy
Fizzy/Curly
Scal
p ha
irColour
Body
hai
rBlackDark BrownLight BrownDuskyBlondeCopper
A-4A-5Texture
SkinA-3Nature Texture ColourAppearance
Dry FairSmooth CrackedOily DarkFirm WrinkledNormal ReddishLustrous MolesSeasonal/Variable Pale YellowSoft MarksThick PinkLoose PimplesThin WheatishRough FrecklesHard GoldenCoarse Clear
DuskyFresh ColourProminent Veins
EyeAppearanceColour
Black Dry/DullDark Brown Dim in lusterLight Brown ShinyGreyish Milky white scleraBlue Reddish tinge to scleraGreen Muddy sclera
A-6
Teeth
Brittle/ Cracked
LustrousLoose
Milky whiteYellowishDull / blackish
RegularIrregularToo large
Too small
MediumLarge
Size Shape
EvenUneven
Appearance ColorA-7
B. Physiological FunctionsB. Physiological Functions
B-2 Amount
Low High Medium VariableDigestive PowerPerspirationBody TemperatureSleepDreams
B-3 Bowel habitsTendency towardsFrequency
Regular ConstipationIrregular Loose motion Variable None
Stool consistencyLoose / Soft / SemiSolid HardMedium
StrongMildVery less
Body odourB-4
DeepSoundShallow
Quality of sleepB-5
Body weight changes
Gain and lose easilyDifficulty in gaining
StableGain easily and lose with difficulty
B-6
Pale
Yel
low
Smoo
th
Palms
NatureColour
Firm
Soft
Roug
h
Britt
le /
Crac
ked
/ Spl
itW
rinkle
d
Dark
Redd
ish
Pink
Soles
A-8
NailsPalate
Lips
Flat
Conv
ex
Complexion
Regular Irregular Frequent Infrequent Medium Variable
Frequency Amount
Low High Medium Variable
Appetite
BladderThirst
B-1 Metabolism
B-8 Have health problems
ColdWarmDryMoistModerate
PreferWeather
Stable
B-9 Have health problems
SummerEarly winter
AutumnSpringRainy season
Prefer
Season transitionNone
Season
Late winter
C. Physical ActivitiesC. Physical Activities
C-1Speed Steps
WalkingStyleAmount
Variable
Quick / Fast / Brisk Firm / SteadyLessSmallMedium UnsteadyHigh / ExcessiveMediumSlow ModerateLarge Sharp / accurate
Speaking
Speed
Variable
Amount
Quick / Fast / Brisk Less
Slow ExcessiveMedium Moderate
C-5
C-4
Deep
Quality of voice
Irrelevant in between
Content of speech
Soft, pleasing Sharp / Accurate / Spontaneous
Feeble Sharp ArgumentativeInconsistentLow Good tone ConvincingConsistent
Weak Clear Sweet and pleasing to earsModerateBroken High pitched Avoid confrontationsWell guarded / Well thought ofRough Loud Deviated from main topicWavering / Easily Deviated
C-3 Voluntary / Involuntary movements of body parts
Eyes
Eyebrows
Jaw
LipsTongue
HeadShoulder
HandsLegs
LessModerateHigh / Excessive
Style / AccuracyWorking
Speed
VariableSharp / AccurateSharp/Accurate/SpontaneousSlow
Firm / SteadyWell thought ofQuick/Fast/BriskUnsteadyWavering / Easily deviatedMedium
C-2Quality
B-7Sweet
SourSalty
Bitter
Pungent
Astringent
ColdWarm
Food
Dry Oily
LikeDoes Not LikeSuitDoes Not Suit
D-1Physical Mental Resistance Power Healing Power
Grade 1 Grade 1 Grade 1 Grade 1Grade 2 Grade 2 Grade 2 Grade 2Grade 3 Grade 3 Grade 3 Grade 3
D. Strength at Various LevelsD. Strength at Various Levels
E. Psychological FunctionsE. Psychological Functions
Quickly Moderately Slowly Variably
Memorizing
Speed
ForgetfulnessRecallingInitiationMaking new friendsAngerIrritability
E-1
E-2Good / Firm/ Stable /
HighPoor / Wavering /
UnstableMedium
Retaining
Quality
PlanningExecutionAchieving endsRetaining friendsAngerForgivenessGenerosityFaith and beliefs
OlfactoryAuditoryTactile
VisualGustatory
Memory typeE-3
Good Poor