This document discusses four theories of dhatu poshana or tissue nourishment in Ayurveda: 1) Kshira-dadhi nyaya (law of transformation) which proposes that one dhatu transforms completely into the next over 7-30 days. However, this theory has drawbacks like not explaining selective effects. 2) Kedari-kulya nyaya (law of transmission) which proposes dhatus are nourished through specific channels like irrigation. This explains selective and immediate effects. 3) Khale-kapota nyaya (law of selection) which proposes dhatus are selectively nourished by individual tissues. This also explains selective effects. 4)

1. DHATU POSHANA
NYAYA
By
Dr. ARUN CHHAJER
M.D. (Kayachikitsa)
Asst. Professor, Bharti Ayurvedic Medical College,
Durg, Chhattisgarh

2. INTRODUCTION
There are 4 theories about the modes of
dhatu formation or nourishment as described
below-
Kshira – dadhi nyaya (Law of Transformation)
Kedari – kulya nyaya (Law of Transmission)
Khale – kapota nayay (Law of Selection)
Ekakala Dhatu Poshan Siddhanta

3. KSHEERA DADHI NYAYA
(LAW OF TRANSFORMATION)
• According to this theory poorvadhatu is
converted into uttara dhatu as milk is
converted into curd, curd into butter & butter
into ghrita & ghrita ghritamanda (upper
transparent portion of ghrita).

4. • For this conversion or transformation of one
dhatu into next dhatu, it takes 7 days for
formation of shukra from rasa dhatu.
• Some says that it takes 30 days for dhatu
transformation to be completed.

5. DRAWBACKS
• According to this theory, the whole rasa dhatu
is converted into rakta & the entire rakta into
mamsa & so on upto shukra dhatu by 7th or
30th day.
• If a person fasts for 7 or 30 days, the entire
body should either becomes shukramaya or it
should have perished because of absence of
all dhatus except shukra.

6. • If rasa dhatu is defective,all dhatus next to it will be
defective as they are formed from rasa.
• Medavriddhi should result in asthivriddhi by this law
but in practice, it is not seen so.
• This theory cannot be applied in case of certain
aphordisiac, anti toxic and rasayan dravyas as they
directly act on praticular tissue.
For e.g. milk is vrishya i.e. it immediately
acts on shukra dhatu after consumption so this cannot
be explained by this law as according to this, it will take
a month to act on shukra dhatu.
Hence this nyaya cannot be acceptes as a whole.

7. Justification
• Formation of dhatus takes place serially. The
dhatus are divided into three parts sthulamsha,
sukshamsha and malamsha during their
transformation.
• The sthoolamsha forms sthayi or stable dhatu.
Sukshmamsha is nutrient portion of next dhatu
and this sukshmamsha gets transformed into next
dhatu when it goes to specific sroats.
• Thus there is no question of complete
transformation of dhatus.

9. KEDARI – KULYA NYAYA
(LAW OF TRANSMISSION)
• According to this theory, the process of
nourishment of tissues can be linked to
irrigation of different fields by water from a
canal.

10. • From this law it is clear that dhatus are nourished
by aahara rasa through specific dhatuvaha srotas
or canal and with the help of dhatvagni, a part of
aahara rasa or dhatuposhaka amsha nourishes
the specific dhatu.
• This law also indicates that rasa dhatu is
nourished ealier than mamsa as it is nearer to
chanal and mamsa dhatu is farther away.
• By this law, action of milk on shukra can be
explained.
• Also it is clear that medavriddhi cannot
necessarily cause asthivriddhi.

12. KHALE KAPOTA NYAYA
(LAW OF SELECTION)
• Accordint to this theory, process of
nourishment of dhatus takes place by
selection. Khala means khalian or field where
in the grains are heaped after cutting the crop.
Kapota means pigeon.

13. • Khale kapota nyaya means slection of
individual items of requirement by individual
dhatwagnis from aahar rasa which can
contains all the nutrient principles.

15. • By this law action of milk on shukra can be
explained.
• Also it is clear that medavriddhi cannot
necessarily cause asthivriddhi.
• Also it is not necessary that vitiated rasa dhatu
should lead to vitiated dhatus.

16. EKAKALA DHATU POSHAN
SIDDHANTA
 This principle was said by
Acharya Arundutta, the
commentator of Astanga
hridaya.
 With the help of vyana vayu,
aahara rasa nourishes all
dhatus at a time without
interruption, throughout life.
 This is known as eka kala
dhatu poshana nyaya.
 This law is universally
accepted without any
criticism.

17. dz- /kkrq iks”k.k U;k; izorZd o leFkZd
1. {khjnf/k U;k;@
dzeifjek.k U;k;@
lokZReifjek.k U;k;
n`<cy o pjd
2. dsnkjh dqY;k U;k; lqJqr oHkkoizdk’k
3. [kys diksr U;k; lqJqr
4. ,d dky /kkrq iks”k.k v:.knÙkookXHkÍ