This is the companion to Monday's piece, Why Taking More Vitamins Doesn't Make You Healthier. That post argued that most people should take fewer things. This one is about how you work out which few.

Because "take less" is only useful advice if you can say what to keep. Ayurveda's answer to that question is constitutional, and it is the single biggest difference between how I was trained to think about supplements and how I think about them now.

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What is a dosha?

A dosha is a functional principle. It is not a personality type and it is not a horoscope, though it gets sold as both.

Ayurveda describes three, each a combination of elements, and each governing a particular kind of activity in the body. Everyone has all three. What differs is the proportion, and that proportion is your prakriti, the constitution you were born with. The classical descriptions of how to assess it appear in the Charaka Samhita, in the Vimana Sthana, and in the Sushruta Samhita, in the Sharira Sthana.

Dosha	Elements	Governs	When in balance	When aggravated
Vata	Air, space	Movement, circulation, the nervous system, elimination	Quick, creative, adaptable, light on their feet	Dry, cold, restless, irregular appetite, unsettled sleep
Pitta	Fire, water	Transformation, digestion, metabolism, perception	Sharp, focused, strong appetite, decisive	Hot, intense, irritable, warm skin, cannot skip meals
Kapha	Earth, water	Structure, lubrication, stability, immunity	Steady, strong, calm, good stamina, sleeps well	Heavy, sluggish, slow to start, congested, holds fluid

Read those and you will probably recognise yourself in one column more than the others. That recognition is the starting point, not the conclusion.

How do I know which dosha I am?

Properly, through assessment with a practitioner, who will look at build, skin, hair, tongue, pulse, appetite, sleep, temperature preference, how you handle stress, and how you have been since childhood.

Informally, a good questionnaire gets you most of the way, and we built one you can do in a few minutes: Discover your dosha.

The most common mistake is answering as you are this month rather than as you have been your whole life. Your prakriti is the long pattern. If you have always run warm, always had a strong appetite, and always been the one who cannot skip lunch, that is the signal, regardless of what this fortnight has been like.

Why would your dosha change what you should take?

Because in Ayurveda every substance has qualities, and qualities either increase or decrease a dosha. Like increases like. Opposites reduce.

Some worked examples, which are more useful than the theory:

Ginger. Warming, light, stimulating. For a kapha person with a slow, heavy morning, that is well matched. For a pitta person who already runs hot with a sharp appetite, the same ginger in the same amount is adding fire to fire.

Ashwagandha. Grounding, building, warming. Traditionally indicated for vata and kapha. It is not the default pitta herb, despite being sold as a universal stress product. I wrote about what the research actually shows here.

Triphala. One of the few genuinely tridoshic preparations, meaning it is considered suitable across all three. Those exist, but there are fewer of them than the marketing suggests. More on it here: Triphala: What It Actually Does.

Cold raw salads. Reasonable for pitta in July. Poor for vata in October, when the classical advice runs the other way entirely, toward warm, moist, cooked, and oily.

Notice that in none of these cases is the substance good or bad. It is matched or mismatched. That is the whole logic, and it is why "what is the best supplement for stress" is a question Ayurveda considers incomplete rather than difficult.

Three formulas, one for each pattern

Banyan Botanicals makes a classical-style blend for each dosha. They are a reasonable place to start if you want to work with your constitution rather than against it, and they are the ones I reach for most.

Take the one matched to your current state, not necessarily the one matched to your birth constitution. That is the prakriti and vikriti distinction doing real work.

If you came out mostly C and would rather work with a single herb than a blend, the pungent taste is the one Ayurveda reaches for. Cayenne is about as direct an expression of it as you will find, and it is one of our own.

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Where the two views agree, and where they do not

It is worth knowing that this is being tested rather than just argued about. Research published under the term Ayurgenomics, much of it from the CSIR Institute of Genomics and Integrative Biology in Delhi, has examined whether people typed into extreme prakriti categories show consistent differences in gene expression and biochemistry. Some correlations have been reported. The work is contested, sample sizes have generally been modest, and it has not settled the question.

So here is my honest position. If you want a validated diagnostic category, prakriti is not currently that, and anyone telling you it is has overclaimed. If you want a working framework for the question of why a herb that helps your friend leaves you wired at 2am, it is the most coherent one I have found, and forty centuries of clinical use is not nothing.

I use it as a lens, not as a lab result. That distinction matters and most people writing about this collapse it.

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Frequently asked questions

Can you have two doshas?

Most people do. Dual constitutions such as vata-pitta or pitta-kapha are more common than single ones. A roughly even balance of all three is described in the classical texts and is considered uncommon.

Can your dosha change over time?

Your prakriti does not. Your vikriti, the current imbalance, changes all the time, and that is what you are actually working with. Age also shifts the picture: childhood is described as kapha-predominant, adulthood as pitta, and later life as vata, regardless of constitution.

What is the best dosha to have?

None of them. This is the question that gives the framework away as a personality quiz in most people's hands. Each has strengths in balance and a characteristic way of going wrong. There is no ranking.

Do I need to know my dosha to take supplements?

No. Vitamin D is vitamin D regardless of constitution, and the nutritional gaps I wrote about on Monday apply broadly. Where it starts to matter is with herbs, where the same plant genuinely suits some people and not others.

How accurate is an online dosha quiz?

Useful as an orientation, not a substitute for assessment. A questionnaire cannot see your tongue, take your pulse, or ask the follow-up question that changes the answer. Treat the result as a hypothesis worth testing.

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What to actually do this week

I also go live every Thursday at 12:15pm ET on The Cosmic Mike Show, where I take one question like this through both Ayurveda and modern nutrition, then answer whatever you want to ask. This week's episode was this post, out loud, with your questions on the end. If you missed it, the replay is on the channel.

Mike Tolani is an Ayurvedic practitioner and the founder of Peach Vitamins.

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. This article is for educational purposes and is not medical advice. Speak with your healthcare provider before starting any supplement, particularly if you are pregnant, nursing, taking medication, or managing a health condition.