The Four Humours and Herbal Medicine: Learning and Qualification Before Practice

Not everything that helps one person will help another, and not everything that is popular suits every condition. This is where proper care of the body begins: understanding what it needs before choosing a food or a remedy for it. Knowledge comes before treatment, qualification comes before practice, and the purpose of treatment is to benefit the person and ease their suffering.

Many people know the names of herbs and pass recipes around, yet they may not know what is causing their symptoms or whether those recipes suit them. Someone hears that a herb helped a relative and assumes it will help them in the same way. In reality, similar complaints do not mean the same cause, and the right plan takes the patient's condition, circumstances and needs into account.

The Humours in Medical Tradition

Traditional medicine knew the theory of the four humours: blood, phlegm, yellow bile and black bile. Ancient physicians believed that health depended on their balance and that illness resulted from imbalance. This idea formed an important part of their language for describing bodies, explaining symptoms and choosing foods and medicines, and it appeared throughout their writing, teaching and practice.

In this traditional classification, blood was considered hot and moist, phlegm cold and moist and yellow bile hot and dry, while black bile was cold and dry. These descriptions were part of a theory linking the humours to the four qualities of heat, cold, moisture and dryness, and they should be understood in their historical and technical context.

In this terminology, “temperament” means more than a passing mood. It does not simply mean cheerfulness or anger, but what they believed resulted from the mixing of those qualities in the body. On this basis they described foods and medicines as hot or cold, and tried to choose what they thought suited the patient's temperament and condition.

One of the subtleties of studying this tradition is that calling a food hot or cold did not always refer to its temperature when eaten, but to the effect on the body they attributed to it according to their theory. Disciplined study helps distinguish these meanings and avoids confusing traditional terminology with a direct physical description.

Studying these terms is useful for understanding the history of medicine and the methods of its practitioners. In current clinical practice, however, humoral theory is not an accepted scientific basis for diagnosing illness or deciding treatment. Respecting tradition means understanding it properly, and caring for patients requires scientific and practical training, grounded in examination, evidence and appropriate assessment.

Observation and Diagnosis

It is not enough for someone to feel cold and conclude that phlegm dominates in them, to be quick-tempered and blame yellow bile, or to feel low and explain it by black bile. Such isolated observations do not make a diagnosis. It is far more useful to describe one's symptoms accurately and seek to understand their causes by consulting a trusted doctor.

Careful observation helps people understand their bodies. Notice when a complaint appears, how long it lasts, how it relates to food, sleep and activity, and what medicines or products you are taking. It helps to write this down in a short note to show a trusted doctor; recording it clarifies the sequence of symptoms and helps assess how you respond.

Observation is valuable when understood in context. A complaint improving after taking something does not, on its own, prove that it caused the improvement. Symptoms can change over time, or with changes to diet and rest. This is where a specialist's role comes in: interpreting and connecting the information, distinguishing coincidence from cause and judging what needs follow-up.

Knowing the Herb and Its Preparation

In authentic medicine, meaning herbal medicine as discussed here, knowledge begins with identifying the plant correctly, knowing which part is used, how it is prepared and what it is used for. The part used may be the leaf, seed or root, and the preparation may be an infusion, an extract or capsules. These differences must be studied and taken into account when making a choice.

Knowledge of herbs is not just memorising their names. Dose, duration of use, quality of the product and its suitability for the patient are all part of that knowledge. A light herbal tea can differ from a concentrated extract so much that the advice must differ too. Judging these things requires structured learning, practical training and, when needed, consultation with a trusted doctor.

A practical example is enteric-coated peppermint oil capsules. They have been studied for relieving some symptoms of irritable bowel syndrome in adults and have shown short-term benefit for some people. This refers to a specific preparation for a specific condition, chosen after consulting a trusted doctor, with its effect monitored according to how symptoms improve and how well it suits the person.

This example shows that using plants becomes more precise when we link it to a studied preparation and a known purpose. The results for capsules cannot be automatically applied to peppermint tea, nor can we assume the same benefit applies to all digestive complaints. This precision is one of the fruits of learning that develops discernment and puts information in its proper place.

When starting any treatment, it is helpful for patients to ask about the expected goal, how long to wait before assessing the result and what would call for a review. These questions make them an informed partner in their own care and help them follow a plan they understand, knowing its purpose and tracking its effects.

The principle of suitability applies to food as well. The type of food, the amount and how it is prepared all matter, and its effect should be understood in light of the person's condition. It is wise for dietary changes to be clear and gradual, and to avoid broad restrictions without good reason. The aim is to bring relief while keeping the diet varied, sufficient and practical for daily life.

When using herbs alongside other medicines, consult a trusted doctor and tell them the names and amounts of the products you are taking. This matters even more with a chronic illness, during pregnancy and breastfeeding, or when treating children. This review helps coordinate treatment and choose what is suitable, while continuing prescribed treatment unless the doctor decides to change it.

Qualification Before Practice

A trustworthy herbal practitioner combines study with training, knows the limits of their expertise and refers patients to someone better placed to assess them when needed. Experience is refined through study and supervised practice, knowledge grows through continuous learning and trust is built on honesty and skill. A practitioner's fame is no substitute for their qualifications, just as a remedy's popularity is no substitute for verifying it.

A person may inherit books, recipes and stories of others' experiences, and these are material for study and research. But the competence to treat is gained through learning, training and assessment; it is not passed down through family. A learner's standing shows in the precision of their understanding, the soundness of their practice, their good judgement and their honesty about what they know and what they still need to learn.

No one becomes a doctor simply by reading. Reading is one means of learning, but a doctor's competence is the fruit of specialist education, clinical training under qualified supervision and assessment of ability. Learning the properties of a herb or one area of healing does not replace this qualification, nor does it give anyone the competence to diagnose and treat every illness.

Teaching is a responsibility that goes hand in hand with learning. Anyone who sets out to teach others must master what they teach, explain its limits and train their students to ask questions, check facts and act with integrity. It is not enough for a student to memorise a remedy; they must learn when it suits a condition, how it is used, how to monitor its effect and when a patient needs to be referred.

Learners deserve teaching that distinguishes between traditional use and studied results, and between personal experience and evidence that can be relied on. Mentioning that a plant was used in the past describes its history; proving its therapeutic benefit requires supporting evidence. This distinction keeps teaching sound and practice disciplined, and teaches students to weigh every piece of information according to its evidence.

Being faithful to medical tradition means studying and verifying it, and doing right by patients means treating them with knowledge, competence and care. Anyone who wants to practise medicine should study in a structured way, train under guidance and meet all the requirements of qualification before taking on treatment. Knowledge is a trust, teaching is a responsibility and human health deserves solid knowledge and a qualified hand.