Why Taking a Systems-Based and Integrative Approach Matters for Longevity and Well-Being
Health is more than the absence of disease—it’s a dynamic spectrum. At one end, there’s optimal health, where minor ailments are absent, and your body functions with effortless vitality and resilience. As you move along the spectrum, you may experience mild discomforts like low energy or digestive issues. An integrative approach addresses these early on with a systems- based whole-person approach. This method includes support with nutrition, lifestyle adjustments, improved sleep and stress management.
As health challenges become more pronounced and medical diagnosis is required, integrative care complements traditional treatments. The beauty of this approach is that it works at every stage of the health spectrum. Whether you’re seeking prevention, restoration, or maintenance, an Integrative whole-person approach empowers you to take control of your health.
Domains of Integrative Care: Key Areas of Focus in Dr. Rahna Rehman’s Approach
Your body is designed to maintain stability and harmony, constantly adapting to challenges. This natural state of balance—homeostasis—relies on the health of interconnected systems (Domains). Achieving homeostasis is key to attaining bioharmony and overall well-being.

Bioharmony
True wellness isn’t about fixing one area in isolation; it’s about ensuring all systems work in sync. Communication between cells, organs, and pathways is crucial. It’s also important to recognise that the mind and spirit play a role in regulating the nervous system and supporting this overall process.
When signals are disrupted, the body’s “orchestra” falls out of tune, leading to dysfunction and symptoms.
By addressing each domain and its connections, we help restore harmony, unlocking your full potential for optimal health and well-being.
Domains of Integrative Care©
Dr. Rahna Rehman’s approach offers an innovative, systems-based model that transforms the path to health. This method integrates the best of modern science with time-tested practices and views the body as an interconnected whole. Instead of simply addressing isolated symptoms, the focus is on restoring balance and promoting long-term wellness.
It empowers individuals with a personalised wellness plan that nurtures all aspects of their well-being—physical, mental, and emotional. Dr. Rahna’s approach unlocks the body’s natural resilience, guiding individuals toward lasting vitality, proactive care, and sustainable health.


Metabolic Health
Metabolic health refers to the optimal functioning of the body’s systems that regulate energy production, storage, and utilisation. It encompasses stable blood sugar levels, healthy lipid profiles, balanced hormone levels, efficient energy metabolism and weight management. it’s a continuous process that occurs even when you’re sleeping. Metabolic disorders happen when the body’s system for turning food into energy isn’t working properly.Supporting efficient energy use promotes a longer, healthier life.


Immune Health
The immune system defends the body against infections. It repairs injuries and maintains overall resilience. It acts as a communication hub for healing, gut health, and emotional well-being. Maintaining its balance is crucial. Dysregulation can cause autoimmune conditions, allergic reactions and chronic inflammation that contributes to the development of many chronic disease. Supporting its efficiency will slow the aging process of our internal biology, referred to as Inflammaging.


Brain & Nervous System Health
The brain functions as a dynamic switchboard, seamlessly integrating signals from neural circuits, as well as the nervous, immune, and hormonal systems. Emotions play a crucial role in this interaction, influencing and being influenced by the rest of the body. This bidirectional communication occurs through pathways like the HPA axis and the nervous system, ensuring smooth bodily function and adaptability.
By regulating stress, emotions, and healing processes, the brain fosters a state of balance and resilience. However, factors such as aging, lifestyle choices, and environmental influences can disrupt this intricate system. Prioritising brain and nervous system health enhances mental clarity, emotional stability, memory, and overall quality of life.


Hormone Optimisation
Hormones are vital chemical messengers ‘The Body’s Master Regulators.’ They regulate nearly every cell and system in the body. They work in harmony like a finely tuned symphony. They influence energy, metabolism, mood, and immune function. They play a critical role in promoting cellular repair, muscle and bone strength, and mental clarity. Maintaining hormonal balance is crucial for both wellness & supporting longevity. Imbalances can accelerate aging and increase the risk of chronic diseases. By nurturing hormonal health, you enhance your quality of life and pave the way for a vibrant, healthy lifespan.


Gut health and the Microbiome
The gastrointestinal (GI) tract is often called the body’s engine room. It is a remarkable system that does much more than digest food. It breaks down what we eat. It absorbs vital nutrients. It eliminates waste. Meanwhile, it houses trillions of microorganisms that are crucial for overall health. This interconnected network influences brain health, hormone regulation, immunity, and detoxification, making it a cornerstone of well-being. The gut microbiome is at the core of this system. It is a vital ally that shapes digestion and strengthens immunity. It balances hormones and even supports mental health. By nurturing this intricate system, we open the door to a healthier, more vibrant life.


Detoxification
We are constantly and inadvertently exposed to chemicals and toxins from food, air, and the environment. Therefore, it is vital to maintain a healthy and optimally functioning detoxification system. The body’s detox pathways—primarily the liver, kidneys, lungs, skin, lymphatic system and gut—remove harmful toxins and waste, protecting cells and organs from damage.
Aging, nutrient deficiencies, overwhelming environmental exposure, and stress can weaken this process. This leads to toxin buildup and impaired organ function. It weakens immunity, uses up metabolic reserves, and raises the risk of chronic disease. Supporting detoxification is vital for longevity and overall well-being.

Genomics & Epigenetics
Genomics is the study of your entire genome (the complete set of DNA). It looks at the specific sequence of DNA building blocks and how they are arranged.
It can be used for Diagnosis: Identifying genetic causes of diseases (e.g., cystic fibrosis, Huntington’s disease). Risk Assessment: Predicting susceptibility to certain cancers or other conditions. Pharmacogenomics: Tailoring medication and Nutraceuticals, based on individual genetic makeup.
Epigenetics is the study of how our genes can be turned “on” or “off” without changing the actual DNA. It’s like a set of switches or instructions. These instructions tell our body how to use certain genes. Epigentics is shaped by our environment and behaviors. This in turn influences everything from health to development
Contact us for a Personalised, Integrative Health Plan

Nutrition, lifestyle, and stress management
Nutrition, lifestyle, and stress management are all crucial for maintaining optimal health and well-being.
At Preciva Health we provide a personal holistic plan. This plan will keep you healthy and mentally fit. It will let you live your life to the fullest.

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