September 26, 2018

Busting Myths in Herbal Medicine

Herbal Medicine preparation. Credit: Natural Healers

I have been asked intriguing questions in herbal medicine on several occasions, across different platforms by people from diverse cultures, professions and backgrounds.

From my interactions I have come to know that certain questions are inevitable. Some get argumentative, others are indifferent, and others easily get convinced about the answers I provide from both the marketing perspective and those provided by scientists from the research perspective.

But the question is why these issues are common among diverse groups. Perhaps some have misconceptions and or convictions about the field of herbal medicine that need unmasking to ascertain their veracity.

Permit me to touch on three of the most common concerns.

Question 1:    Can one herbal product cure multiple diseases?

Of all the questions frequently posed, this seems to be the most contentious. It is ambiguous for some people to appreciate why one herbal product should have multiple indications.

Maybe this simple analogy will help: According to the World Health Organization-W.H.O., 25% of modern medicines originate from plants which were first used traditionally.

Some of these orthodox medicines derived from plants are used for treating multiple health conditions.

For example, aspirin, a single chemical compound product is a synthetic orthodox medicine, but its development is based on the traditional use in Europe of plants such as willow (Salix spp.) and meadowsweet (Filipendula ulmaria) to treat rheumatism and general aches and pains. (Journal of chemical education. vol. 78 No. 2 February 2001; jChemEd.chem.wisc.edu)

Aside using it for pain related conditions, aspirin also helps prevent clot, and may also be used in the treatment of heart attack, stroke, peripheral arterial disease, coronary artery bypass, colds, flu, fever and certain cancers.

Also, compared to orthodox medicines which contain only one or two active constituents, medicinal plants and for that matter herbal medicines contain multiple compounds some of which are active whilst others are not.

It is thus fit to say from the above analogy that one herbal product can treat multiple disease conditions.

Moreover, there are a number of pharmacological studies that have supported the claim that one herbal preparation can treat multiple diseases.

The problem however arises when one overstates the claim of the potency of the product without scientific evidence. That is, when the claim is not supported by hard research data. For the purposes of safety and education therefore, marketers of herbal medicines must stick to claims that are supported by research.

Scientific research provides answers to the numerous questions in the field of herbal medicine

Question 2:    Do herbal medicines have side effects?

The thesaurus defines side effect as “any effect of a drug, chemical, or other medicine that is in addition to its intended effect, especially an effect that is harmful or unpleasant”. I learnt also that a side effect can be positive theoretically, but for the purpose of this discussion, let’s stick to the adverse effects.

Did you know that even water can have harmful effects when taken in excess. Fact is that any medication including herbal medicine can have adverse effect.

Such harmful effect could arise from an overdose, herb-drug interaction, an individual’s reaction to an ingredient in the medicine, adulteration or contamination of the herbal product and irrational use.

The fact that a side effect has not been reported does not mean it is non-existent. At the same time one must not link a herbal product to an adverse reaction without scientific evidence. This is the dichotomy which sometimes arises between proponents of herbal medicine and protagonists. Again, the veracity or otherwise of a herbal medicine having adverse effects or not, to a large extent hinges on research.

 

Question 3:    Is herbal medicine safe because it is natural?

I have also heard claims by some sellers of herbal medicines that it is safe because it is natural.

Fact is that, naturality does not mean nor guarantee safety. The two main criteria for assessing the safety of herbal medicine according to the World Health Organization are (1)  long period of traditional use, and (2) scientific- based evidence. So the mere fact that it is natural does not mean it is safe.           

 

The role of scientific research

Among the major steps towards promoting safe and rational use of herbal medicine were the establishment of the Centre for Plant Medicine Research in Mampong Akwapim and the training of Medical Herbalists by the School of Pharmacy of the Kwame Nkrumah University of Science and Technology.

“Men love to wonder, and that is the seed of science” says the American essayist, Ralph Waldo Emersoni.

Let me also borrow the words of Albert Szent-Gyorgyi, the Hungarian-American Biochemist who said, “f I go out into nature, into the unknown, to the fringes of knowledge, everything seems mixed up and contradictory, illogical, and incoherent. This is what research does; it smooths out contradictions and makes things simple, logical and coherent”

Certainly in any discipline, there are a myriad of questions, doubts, confusions, arguments, whose veracity or otherwise can be nailed by scientific research. Herbal medicine is no exception and so continuous scientific research is the surest way to establish the facts and truths for quality assurance.

Phytochemists at the Centre for Plant Medicine Research undertaking research on herbal medicine

 

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