Integrative medicine: concept, application and challenges

Just as natural systems depend on the balance between multiple factors to remain functional, human health results from the interaction between biological, behavioral, psychological and environmental processes. Changes in one of these components can affect how the body functions as a whole.

It is from this broader view that integrative medicine emerges, a model of care that proposes to complement traditional biomedical treatment with other care approaches, provided they are evaluated for safety and efficacy.

This article presents the concept of integrative medicine, its foundations, the main associated practices, the available scientific evidence and the precautions needed for its application in healthcare.

What is integrative medicine?

Integrative medicine can be defined as an approach that combines conventional medical practices with complementary therapies, considering the individual more broadly and valuing aspects such as lifestyle, psychological well-being and social context.

It emerged in response to criticism of the traditional care model, often centered on disease and the treatment of symptoms, especially in chronic conditions. However, it is important to stress that integrative medicine is not an independent medical system, nor does it replace established clinical protocols.

Unlike alternative therapies — which, in some cases, set out to replace conventional medical treatments — integrative medicine, in its most widely accepted formulation, advocates the complementary use of practices that have some degree of scientific support.

Even so, the concept is heterogeneous and can vary significantly between institutions, countries and professionals, which calls for caution in how it is defined and applied.

Principles associated with integrative medicine

Although there is no single consensus, the literature and practice usually associate integrative medicine with a few general principles:

Patient-centeredness

Care tends to consider the patient’s preferences, values and life context, with greater emphasis on listening and the therapeutic relationship.

A broader view of health

Factors such as diet, physical activity, sleep, stress, social relationships and environment are taken into account, in addition to traditional clinical aspects.

Emphasis on prevention

There is a focus on health promotion and on reducing risk factors, especially in noncommunicable chronic diseases.

Careful use of evidence

Ideally, the proposed interventions should be evaluated for safety, efficacy and cost-effectiveness, although the level of evidence varies widely among the practices used.

Scientific evidence and controversies

One of the main points of debate around integrative medicine concerns the quality and consistency of the scientific evidence supporting certain complementary therapies.

Institutions such as the National Center for Complementary and Integrative Health (NCCIH), in the United States, are dedicated to studying these practices systematically. The results, however, are mixed:

• Some interventions show moderate evidence of benefit for specific indications.

• Others show limited or inconsistent effects, or effects comparable to placebo.

• Some widely used practices have not yet had their efficacy robustly proven.

Frequently discussed examples include:

• Acupuncture: there is evidence of benefit for certain types of chronic pain and for chemotherapy-induced nausea, although the mechanisms are still debated.

• Mind-body practices (meditation, yoga): associated with reduced stress and improvements in quality of life and some psychophysiological parameters, especially as supportive interventions.

• Massage therapy: may help relieve symptoms such as pain and anxiety, especially in palliative or rehabilitation settings.

In general, most of these practices are indicated as a complement to medical treatment, not as the main therapy.

Clinical applications and necessary precautions

In clinical practice, integrative medicine is usually applied as support for conventional care, especially in settings such as oncology, chronic pain, rehabilitation and palliative care.

For example, in cancer treatment, complementary resources may be used to manage symptoms and improve quality of life, without replacing therapies such as surgery, chemotherapy or radiotherapy.

However, there are risks associated with the indiscriminate use of these approaches, including:

• drug interactions with herbal medicines and supplements;

• delays in starting treatments of proven efficacy;

• adoption of practices without adequate scientific support;

• additional costs with no clear clinical benefit.

For this reason, national and international guidelines stress that any integrative practice should be discussed with qualified health professionals and carefully incorporated into the treatment plan.

Final considerations: the potential and limits of integrative medicine

Integrative medicine reflects a growing demand for care models that are more patient-centered and attentive to the non-biological determinants of health. In some contexts, it can help improve the care experience and symptom management.

However, its use requires critical evaluation, transparency about the available evidence and responsible integration with conventional medicine. The uncritical adoption of complementary practices can create clinical, ethical and economic risks.

Therefore, rather than a substitute model, integrative medicine should be understood as a field under construction, one that demands continuous research, adequate regulation and evidence‑based application.