The Science of AYURVEDA
Ayurveda is considered by many scholars to be the oldest healing science. In Sanskrit, Ayurveda means “The Science of Life.” Ayurvedic knowledge originated in India more than 5,000 years ago and is often called the “Mother of All Healing.” It stems from the ancient Vedic culture and was taught for many thousands of years in an oral tradition from accomplished masters to their disciples. Some of this knowledge was set to print a few thousand years ago, but much of it is inaccessible. The principles of many of the natural healing systems now familiar in the West have their roots in Ayurveda, including Homeopathy and Polarity Therapy. Ayurveda is one of the traditional systems of medicine that practices holistic principles primarily focused on personalized health. Ayurveda is one of the ancient yet living health traditions. Ayurveda is commonly referred as ‘science of life’ because the Sanskrit meaning of Ayu is life and Veda is science or knowledge. Charaka Samhita, Sushruta Samhita (~400 BC–200 AD) and Ashtanga Hridaya of Vagbhata are main classics, which give detailed descriptions of over 700 herbs and 6,000 formulations. Madhav Nidan (~800 AD), a diagnostic classic, provides over 5,000 signs and symptoms.
Life in Ayurveda is conceived as the union of the body, senses, mind and spirit. The concept of Prakriti or individual nature has a central role in Ayurveda therapeutics.
The need for scientific evaluation of Ayurveda has been recognized for a long time. Ayurveda has personalized approach involving constitutional assessment, which can guide primary prevention, diagnosis and therapeutics. Ayurveda also offers detailed guidance about food, nutrition and diet as per the individual constitution or Prakriti as well as seasons. The scientific value of basic principles of Ayurveda like Prakriti is being studied in context to biology and genomics. Ayurveda entails a scientific tradition of harmonious living and its origin can be traced from ancient knowledge in Rigveda and Atharvaveda. Ayurvedic medicines contain sophisticated therapeutic formulations. Ayurveda is also a person-centered medicine (PCM), which deals with healthy lifestyle, health promotion and sustenance, disease prevention, diagnosis and treatment [1]. The holistic concepts of Ayurveda give emphasis to health promotion, disease prevention, early diagnosis and personalized treatment. There seem to be substantial similarities between the traditional systems like Ayurveda and the innovative approach of predictive, preventive and personalized medicine (PPPM).
Ayurveda is a traditional healthcare system of Indian medicine since ancient times. Several Ayurvedic medicines have now been exploited for treatment and management of various diseases in human beings. The several drugs have been developed and practiced from Ayurveda since ancient time to modern practice as ‘tradition to trend’ has taken-on its own life. With over 400,000 registered Ayurveda practitioners, the government of India has a formal structure to regulate its quality, education and practice. The potential of Ayurvedic medicine needs to be explored further with modern scientific validation approaches for better therapeutic leads.
The epistemology of Ayurveda is based on the relation between microcosm and macrocosm involving five basic elements (mahabhoota), three dynamic principles similar to humors (dosha), seven types of tissues (dhatus) and many other unique concepts. An introduction to basic concepts may be useful for readers who are not familiar with epistemology of Ayurveda [15]. In general, Ayurveda is experiential, intuitive and holistic, whereas that of the modern medicine is based more on experimental, analytical and reductive reasoning. The relationship between Ayurveda and modern science is similar to the relationship between the ‘whole’ and the ‘parts’, where the sum of the parts need not be equal to the whole. Modern medicine is based more on rationalism, reductionism with deeper understanding of molecules, cells, organs or diseases as parts. In the process, however, the sight of the whole person seems to have been somewhat neglected. Integrative, whole system approaches like PPPM and PCM as well as traditional and holistic systems like Ayurveda may need epistemologically sensitive research methodology.
Ayurveda is uniquely patient-oriented where the Ayurvedic physician diagnoses, treats and dispenses medicine to every individual patient. This important principle can form the basis for a form of personalized medicine which will give maximum therapeutic efficacy and high safety to a particular person with a particular disorder, under specified conditions depending on individual constitution, and properties of materials. Prakriti specific prescription may also include supportive therapies, diet and life-style advice so as to regain physiological balance, finally resulting in the removal of the disorder. A decision-support system known as AyuSoft (developed by Center for Development of Advance Computing and University of Pune, Ganeshkhind, Pune India) based on Ayurveda knowledge has been shown to be useful in determination of individual Prakriti and personalized treatments.
According to Ayurveda constructs, doshas are the dynamic principles, which govern a person’s physical, physiological and psychological functions including metabolism. Ayurveda describes three doshas namely vata, pitta, and kapha. The proportional domination of doshas in an individual is expressed as Prakriti, which broadly mean a body type or individual nature. An Ayurvedic physician determines the Prakriti of a patient so as to personalize treatment. The Ayurvedic description clearly suggests that the innate dispositions are represented by individual Prakriti, which represent phenotypes. Classifying humans based on phenotypes still remains a challenge to biomedical science. A number of research groups are now investigating the correlation between Ayurvedic phenotypes and individual human genotypes. A pioneering study showed significant correlation between HLA alleles and Ayurvedic Prakriti type. Later, it was also hypothesized that different Prakritis may possess different drug metabolism rates associated with drug-metabolizing enzyme polymorphism. In another genotyping study, significant correlations between CYP2C19 genotypes and major classes of Prakriti types have been reported. A project to study genomic variation analysis and gene expression profiling of human, Prakriti based on the principles of Ayurveda is underway. Now, it is hoped that going beyond genomics is necessary to understand how environment and behaviors can be responsible for inheritable changes when the genome remains unchanged. This science of epigenetics is seen as a future hope to get answers to many puzzles. It is felt that detailed understanding of Ayurvedic concepts like Prakriti may actually facilitate this process. However, no specific genotype has yet been specifically related to a Prakriti type.
Balancing the Three Principle Energies of the Body
Ayurveda identifies three basic types of energy or functional principles that are present in everyone and everything. Since there are no single words in English that convey these concepts, we use the original Sanskrit words Vata, Pitta and Kapha. These principles can be related to the basic biology of the body.
Energy is required to create movement so that fluids and nutrients get to the cells, enabling the body to function. Energy is also required to metabolize the nutrients in the cells, and is called for to lubricate and maintain the structure of the cell. Vata is the energy of movement; Pitta is the energy of digestion or metabolism and Kapha, the energy of lubrication and structure. All people have the qualities of vata, pitta and kapha, but one is usually primary, one secondary and the third is usually least prominent. The cause of disease in Ayurveda is viewed as a lack of proper cellular function due to an excess or deficiency of vata, pitta or kapha. Disease can also be caused by the presence of toxins. Additionally the spiritual beings that we humans are, the 7 CHAKRA’s also have to be balanced.
In Ayurveda, body, mind and consciousness work together in maintaining balance. They are simply viewed as different facets of one’s being. To learn how to balance the body, mind and consciousness requires an understanding of how vata, pitta and kapha work together. According to Ayurvedic philosophy the entire cosmos is an interplay of the energies of the five great elements—Space, Air, Fire, Water and Earth. Vata, pitta and kapha are combinations and permutations of these five elements that manifest as patterns present in all creation. In the physical body, vata is the subtle energy of movement, pitta the energy of digestion and metabolism, and kapha the energy that forms the body’s structure.
Vata is the subtle energy associated with movement — composed of Space and Air. It governs breathing, blinking, muscle and tissue movement, pulsation of the heart, and all movements in the cytoplasm and cell membranes. In balance, vata promotes creativity and flexibility. Out of balance, vata produces fear and anxiety.
Pitta expresses as the body’s metabolic system — made up of Fire and Water. It governs digestion, absorption, assimilation, nutrition, metabolism and body temperature. In balance, pitta promotes understanding and intelligence. Out of balance, pitta arouses anger, hatred and jealousy.
Kapha is the energy that forms the body’s structure — bones, muscles, tendons — and provides the “glue” that holds the cells together, formed from Earth and Water. Kapha supplies the water for all bodily parts and systems. It lubricates joints, moisturizes the skin, and maintains immunity. In balance, kapha is expressed as love, calmness and forgiveness. Out of balance, it leads to attachment, greed and envy.
Life presents us with many challenges and opportunities. Although there is much over which we have little control, we do have the power to decide about some things, such as diet and lifestyle. To maintain balance and health, it is important to pay attention to these decisions. Diet and lifestyle appropriate to one’s individual constitution strengthen the body, mind and consciousness.
Ayurveda as a Complementary System of Healing
The basic difference between Ayurveda and Western allopathic medicine is important to understand. Western allopathic medicine currently tends to focus on symptomatology and disease, and primarily uses drugs and surgery to rid the body of pathogens or diseased tissue. Many lives have been saved by this approach. In fact, surgery is encompassed by Ayurveda. However, drugs, because of their toxicity, often weaken the body. Ayurveda does not focus on disease. Rather, Ayurveda maintains that all life must be supported by energy in balance. When there is minimal stress and the flow of energy within a person is balanced, the body’s natural defense systems will be strong and can more easily defend against disease.
It must be emphasized that Ayurveda is not a substitute for Western allopathic medicine. There are many instances when the disease process and acute conditions can best be treated with drugs or surgery. Ayurveda can be used in conjunction with Western medicine to make a person stronger and less likely to be afflicted with disease and/or to rebuild the body after being treated with drugs or surgery.
We all have times when we don’t feel well and recognize that we’re out of balance. Sometimes we go to the doctor only to be told there is nothing wrong. What is actually occurring is that this imbalance has not yet become recognizable as a disease. Yet it is serious enough to make us notice our discomfort. We may start to wonder whether it is just our imagination. We may also begin to consider alternative measures and actively seek to create balance in our body, mind and consciousness.
Evaluation and Treatment of Imbalances
Ayurveda encompasses various techniques for assessing health. The practitioner carefully evaluates key signs and symptoms of illness, especially in relation to the origin and cause of an imbalance. They also consider the patient’s suitability for various treatments. The practitioner arrives at diagnosis through direct questioning, observation and a physical exam, as well as inference. Basic techniques such taking the pulse, observing the tongue, eyes and physical form; and listening to the tone of the voice are employed during an assessment.
Palliative and cleansing measures, when appropriate, can be used to help eliminate an imbalance along with suggestions for eliminating or managing the causes of the imbalance. Recommendations may include the implementation of lifestyle changes; starting and maintaining a suggested diet; and the use of herbs. In some cases, participating in a cleansing program, called panchakarma, is suggested to help the body rid itself of accumulated toxins to gain more benefit from the various suggested measures of treatment.
In summary, Ayurveda addresses all aspects of life — the body, mind and spirit. It recognizes that each of us is unique, each responds differently to the many aspects of life, each possesses different strengths and weaknesses. Through insight, understanding and experience Ayurveda presents a vast wealth of information on the relationships between causes and their effects, both immediate and subtle, for each unique individualV
Vata
The Energy of Movement
Vata provides the essential motion for all bodily processes and is extremely vital for health. On an annual basis, vāta is most prominent in the fall and at the change of seasons, and these are the most important times to be careful of diet and lifestyle. One purpose of lifestyle considerations is stabilize this motion. Routine is very useful in assisting the vata individual to effectively ground all this moving energy.
A person with vata predominant is blessed with a quick mind, flexibility and creativity. Mentally, they usually grasp concepts quickly but then forget them just as quickly. Alert, restless and very active, vata people walk, talk and think fast, but are easily fatigued. They tend to have less willpower, confidence, boldness and tolerance for fluctuation than other types and often feel unstable and ungrounded. When unbalanced, vata types may become fearful, nervous and anxious. In the external world, vata types tend to earn money quickly and spend it quickly. They are not good planners and as a consequence may suffer economic hardship.
Vata types have variable appetite and digestion. They are often attracted to astringent foods like salad and raw vegetables, but their constitution is balanced by warm, cooked foods and sweet, sour and salty tastes. With a tendency to produce little urine, their feces are often hard, dry and small in size and quantity.
Vata resides in the colon, as well as the brain, ears, bones, joints, skin and thighs. Vata people are more susceptible to diseases involving the air principle, such as emphysema, pneumonia and arthritis. Other common vata disorders include flatulence, tics, twitches, aching joints, dry skin and hair, nerve disorders, constipation, and mental confusion. Vata in the body tends to increase with age as is exhibited by the drying and wrinkling of the skin.
Since the attributes of vata are dry, light, cold, rough, subtle, mobile and clear, any of these qualities in excess can cause imbalance. Frequent travel, especially by plane, loud noises, continual stimulation, drugs, sugar and alcohol all derange vata, as does exposure to cold and cold liquids and foods. Like the wind, vata types have a hard time becoming and staying grounded. Routine is difficult but essential if vata is to be lowered and controlled. It is best for vata types to go to bed by 10 PM as they need more rest than the other types. In general, people with excessive vata respond most rapidly to warm, moist, slightly oily, heavy foods. Steam baths, humidifiers and moisture in general are helpful. Daily oil massage before bath or shower is also recommended.
Dietary Considerations
General food guidelines for decreasing vata include warm, well-cooked, unctuous foods. One should have small meals three or four times a day and may snack as needed while maintaining a two hour gap between each meal. Regularity in meal times is important for vata. Those with vata-dominant constitutions do well with one- pot meals such as soups, stews and casseroles. They can use more oil in cooking their foods than the other two doshas and experience better digestion if they limit their intake of raw foods.
Well-cooked oats and rice are good for vata because they are not too drying when cooked with plenty of water and butter or ghee. While cooked vegetables are best for vata, the occasional salad with a good oily or creamy dressing is all right. Nightshades—tomatoes, potatoes, eggplants and peppers—as well as spinach should be avoided if the vata person has stiff, aching joints or muscles. Sweet, ripe and juicy fruits are good for vata. The astringent and drying fruits, such as cranberries, pomegranates and raw apples, should be avoided. Fruit should always be eaten by itself on an empty stomach.
Many vata people can satisfy their need for protein by judicious use of dairy products, but can also use eggs, chicken, turkey, fresh fish and venison if they wish. Legumes are difficult to digest and should be consumed in limited quantity by those trying to pacify vata. The legumes should be the split type and soaked before cooking. Cooking them with a little oil and spices, such as turmeric, cumin, coriander, ginger, garlic and hing (asafoetida), will help prevent vata from being disturbed.
All nuts and seeds are good for vata, but are best used as butters or milks. Ten almonds, soaked in water overnight with skins removed the next morning, are a satisfying early morning food. Sesame oil is warming for vata, but all oils are good. All dairy products are good for vata with hard cheese being eaten sparingly. All spices are good, but should not be overused. Vatas can have half a glass of wine, diluted with water, during or after a meal. Since vata people tend to be prone to addiction, they should avoid sugar, caffeine and tobacco. Intensity itself can be intoxicating to vata, so one should seek relaxation and meditation to reduce vata.
General guidelines for balancing vata:
- Keep warm
- Keep calm
- Avoid cold, frozen or raw foods
- Avoid extreme cold
- Eat warm foods and spices
- Keep a regular routine
- Get plenty of rest
Pitta
The Energy of Digestion and Metabolism
Pitta types have many of the qualities of fire. Fire is hot, penetrating, sharp and agitating. Similarly, pitta people have warm bodies, penetrating ideas and sharp intelligence. When out of balance, they can become very agitated and short-tempered. The pitta body type is one of medium height and build, with ruddy or coppery skin. They may have many moles and freckles. Their skin is warm and less wrinkled than vata skin. Their hair tends to be silky and they often experience premature graying or hair loss. Their eyes are of medium size and the conjunctiva is moist. The nose is sharp and the tip tends to be reddish.
Those with pitta-dominant constitutions have a strong metabolism, good digestion and strong appetites. They like plenty of food and liquids and tend to love hot spices and cold drinks. However, their constitution is balanced by sweet, bitter and astringent tastes. Pitta people’s sleep is sound and of medium duration. They produce large quantities of urine and feces, which tend to be yellowish, soft and plentiful. They perspire easily and their hands and feet stay warm. Pitta people have a lower tolerance for sunlight, heat and hard physical work.
Mentally, pitta types are alert and intelligent and have good powers of comprehension. However, they are easily agitated and aggressive and tend toward hate, anger and jealousy when imbalanced. In the external world, pitta people like to be leaders and planners and seek material prosperity. They like to exhibit their wealth and possessions. Pitta people tend to have diseases involving the fire principle such as fevers, inflammatory diseases and jaundice. Common symptoms include skin rashes, burning sensation, ulceration, fever, inflammations or irritations such as conjunctivitis, colitis or sore throats.
Since the attributes of pitta are oily, hot, light, mobile, dispersing and liquid, an excess of any of these qualities aggravates pitta. Summer is a time of heat, the pitta season. Sunburn, poison ivy, prickly heat and short tempers are common. These kinds of pitta disorders tend to calm down as the weather gets cooler. The diet and lifestyle changes emphasize coolness—cool foods, avoidance of chilies and spices (especially difficult for New Mexicans), and cool climates. People with excessive pitta need to exercise at the coolest part of the day.
Dietary Considerations
General food guidelines for pacifying pitta include avoiding sour, salty and pungent foods. Vegetarianism is best for pitta people and they should refrain from eating meat, eggs, alcohol and salt. To help calm their natural aggressiveness and compulsiveness, it is beneficial to incorporate sweet, cooling and bitter foods and tastes into their diets.
Barley, rice, oats and wheat are good grains for pitta dominant individuals and vegetables should form a substantial part of their diet. Tomatoes, radishes, chilies, garlic and raw onions should all be avoided. In fact, any vegetable that is too sour or hot will aggravate pitta, but most other vegetables will help to calm it. Daikon radishes are cleansing for the liver when pitta is in balance but should be avoided otherwise. Salads and raw vegetables are good for pitta types in the spring and summer as are any sweet fruits. Sour fruits should be avoided with the exception of limes, used sparingly.
Animal foods, especially seafood and eggs, should only be taken in moderation by pitta types. Chicken, turkey, rabbit and venison are all right. All legumes except red and yellow lentils are good in small amounts, with black lentils, chickpeas and mung beans being the best.
Most nuts and seeds have too much oil and are heating for pitta. However, coconut is cooling and sunflower and pumpkin seeds are all right occasionally. Small amounts of coconut, olive and sunflower oils are also good for pitta.
Sweet dairy products are good and include milk, unsalted butter, ghee and soft, unsalted cheeses. Yogurt can be used if it is blended with spices, a little sweetener and water. In fact, pitta people can use a sweetener better than the other two doshas because it relieves pitta. However, they should avoid hot spices, using cardamom, cinnamon, coriander, fennel and turmeric predominantly, with small amounts of cumin and black pepper.
Coffee, alcohol and tobacco should be completely avoided although the occasional beer may be relaxing for a pitta person. Black tea may also be used occasionally with a little milk and a pinch of cardamom.
General guidelines for balancing pitta:
- Avoid excessive heat
- Avoid excessive oil
- Avoid excessive steam
- Limit salt intake
- Eat cooling, non-spicy foods
- Exercise during the cooler part of the day
Kapha
The Energy of Lubrication
Kapha types are blessed with strength, endurance and stamina. In balance, they tend to have sweet, loving dispositions and be stable and grounded. Their skin is oily and smooth. Physically, kapha people may gain weight easily and have a slow metabolism. They tend to shun exercise. They have thick skin and their bodies and muscles are well developed. Their eyes are large and attractive with thick, long lashes and brows. Kapha people evacuate slowly and feces tend to be soft, pale and oily. Perspiration is moderate. Sleep is deep and prolonged. Kapha types are attracted to sweet, salty and oily foods, but their constitutions are most balanced by bitter, astringent and pungent tastes.
Psychologically, kapha people tend to be calm, tolerant and forgiving. However, they may become lethargic. While they may be slow to comprehend, their long term memory is excellent. When out of balance, kaphas tend to experience greed, envy, attachment and possessiveness. In the external world, kapha tendencies toward groundedness, stability and attachment help them to earn and hold onto money.
They are more likely to have diseases connected to the water principle such as flu, sinus congestion, and other diseases involving mucous. Sluggishness, excess weight, diabetes, water retention, and headaches are also common. Kapha can become more aggravated as the moon gets full because there is a tendency for water retention at that time. Winter is the time of greatest kapha accumulation and following the kapha-balancing dietary and lifestyle changes are most important during that season.
Dietary Considerations
Dietary guidelines for kapha people stress bitter, astringent and pungent tastes. They actually need foods that will invigorate their minds while limiting their overall consumption of food. They should avoid dairy products and fats of any kind, especially fried or greasy foods.
Those with kapha dominant constitutions need less grain than pitta or vata constitutions with buckwheat and millet (more heating) being optimal grains for them followed by barley, rice and corn. Roasted or dry cooked grains are best. All vegetables are good for kapha but one should emphasize leafy greens and vegetables grown above ground more than root vegetables while avoiding very sweet, sour or juicy vegetables. Generally kapha people can eat raw vegetables although steamed or stir-fried are easier to digest. Very sweet or sour fruits should be avoided with the more astringent and drying fruits being preferable such as apples, apricots, cranberries, mangoes, peaches and pears.
Only rarely do kapha people need animal foods and, when they do, it should be dry cooked—baked, roasted, broiled—never fried. They could eat chicken, eggs, rabbit, seafood and venison. As their bodies do not require large amounts of protein, they also should not overeat legumes although these are better for them than meat because of the lack of fat. Black beans, mung beans, pinto beans and red lentils are best for kapha types.
The heavy qualities of nuts and seeds aggravate kapha as does the oil in them. Occasional sunflower and pumpkin seeds are all right. Almond, corn, safflower or sunflower oils can be used in small amounts as well. The same holds true for dairy products: in general, kapha people should avoid the heavy, cooling, sweet qualities of dairy. A little ghee for cooking and some consumption of goat’s milk is good for kapha types.
Since kapha people should avoid sweets, the only sweetener they should use is raw honey, which is heating. However, they can use all spices, except salt, with ginger and garlic being best for them. A person whose dominant dosha is kapha and who has very little influence from the other two doshas can benefit from the occasional use of stimulants such as coffee and tea. They are also not as harmed by tobacco and hard liquor. However, they really do not need alcohol at all. If they elect to use alcohol, wine is their best choice.
General guidelines for balancing kapha:
- Get plenty of exercise
- Avoid heavy foods
- Keep active
- Avoid dairy
- Avoid iced food or drinks
- Vary your routine
- Avoid fatty, oily foods
- Eat light, dry food
- No daytime naps
Remember that your progress toward balance and health is proportional to how well you stick to the guidelines of diet and lifestyle. Old habits sometimes die hard and your changes may be very gradual but, to achieve progress, the changes need to be made.
You are in charge of your own rate of change.