Dr. Ahmad Shahzad
Founder | Lyallpur Diabetes Foundation
Consultant Diabetologist | Educator | Advocate for Preventive Care
Metabolic health is the successful effort of the body to keep the blood levels of sugar, cholesterol, blood pressure, and waist circumference within optimal limits without medical help. Such metabolic functions can be derailed to a considerable degree by obesity, which is the body fat containing excess tissue that is generally calculated as a body mass index value of 30 more. Poor metabolic health may be a problem in individuals with obesity but not all individuals with obesity may have poor metabolic health; however, the relationship between the two has a crucial impact in relation to long term health risks of heart disease, diabetes and stroke. The article discusses the connection between metabolic health and obesity, the phenomenon of metabolically healthy obesity, and the measures that a person can take to preserve and enhance the overall state of well-being.
What Is Metabolic Health?
Metabolic health is the capacity of the organism to effectively metabolize, digest, and transform food into energy to maintain the best condition and reduce the chance of developing the chronic disease of type 2 diabetes, cardiovascular disease, and stroke. It is calculated based on measurable health indicators that consider how effective the body is in the management of energy and how it manages to level the body.
Key Markers of Metabolic Health
The primary markers used to assess metabolic health are:
- Fasting Blood Sugar (Glucose): optimal level would be between 70-100mg/dL (3.9-5.6mmol/L). When the sugar level in the blood is high, it may signify predisposition to insulin resistance or diabetes
- Triglycerides: Levels of fats in the blood; healthy amounts are less than 150mg/dL. Elevated triglycerides pose a risk to heart diseases
- Cholesterol: Much attention may be paid to HDL (good) and LDL (bad) cholesterol. Low HDL, hyper LDL, or triglycerides have an adverse association with metabolic health.
- Blood Pressure: The optimal blood pressure is below 120 /80mm Hg. Readings of over 130/80mm Hg are always alarming and put the person at a higher risk of cardiovascular problems.
- Waist Circumference: Retains belly fat an increase in the waist measurement to more than 40in (102cm) among men and 35in (88cm) among women is thereby considered a high risk. Abdominal obesity stems out to be a great indicator of metabolic issues.
Differences: Metabolically Healthy vs. Unhealthy Individuals
| Feature | Metabolically Healthy | Metabolically Unhealthy |
| Blood Sugar | Normal fasting & postprandial levels | Elevated or fluctuating levels |
| Triglycerides | Within healthy range | Elevated |
| Cholesterol | Favorable HDL/LDL ratio | Low HDL/high LDL or triglycerides |
| Blood Pressure | Below 120/80mm Hg | Persistently over 130/80mm Hg |
| Waist Circumference | Within recommended range | Exceeds risk thresholds |
Understanding Obesity
Obesity can be defined as unnatural or excess fat deposits that pose a danger to health. Body Mass Index (BMI) is the most popular metric used in the categorization of obesity where the mass of a person is measured in kilograms, and their height in meters are squared.
- Underweight: BMI <18.5
- Healthy weight: BMI 18.5–24.9
- Overweight: BMI 25.0–29.9
- Obesity (Class I): BMI 30.0–34.9
- Obesity (Class II): BMI 35.0–39.9
- Obesity (Class III/Severe): BMI ≥40.0
To some groups of persons (e.g. Asians), overweight and obese cut-offs have lower BMI setting since they have a higher chance at lower BMI.

Common Causes of Obesity
The causes of obesity usually include some of the following elements, which are interrelated:
Lifestyle
- Large energy consumption of food and excessive amounts of processed food and sugary drinks.
- Inactive lifestyle.
- Sleep disorder and chronic stress.
Genetics
- Genetics will determine the way your body stores fat, how you will burn calories and the process of appetite regulation.
- Exposure to family history is also a risk factor because there are many genes that have been found to correlate with weight gain tendencies.
Environment
- Access to high-calorie drinks and food uses.
- Low level of physical activity (poor neighborhoods, shortage of parks/grocery stores).
- Factors such as income, education and occupation are socioeconomic factors.
Medications and Medical Conditions
- Some drugs (e.g. steroids, antidepressants, antipsychotics, anti-seizure, and diabetes) are associated with weight gain.
- Obesity may be facilitated by health conditions like hypothyroidism, Cushing syndrome and polycystic ovary syndrome.
Not All Obesity Is the Same: Visceral vs Subcutaneous Fat
There are two main types of body fat, each with different health implications:
| Fat Type | Location & Features | Health Impact |
| Visceral fat | – Deep inside the abdomen, surrounding internal organs – Not visible or pinchable | – Highly metabolically active – Releases inflammatory cytokines – Strongly linked to risk of type 2 diabetes, heart disease, stroke, and metabolic syndrome |
| Subcutaneous fat | – Lies just beneath the skin (can be pinched) – Found mostly in hips, thighs, abdomen, buttocks | – Less metabolically active – Serves as energy storage and insulation – Excess can still contribute to joint problems but is less dangerous metabolically |
- Due to the nature of visceral fat action as well as its tendency to result in inflammatory condition, the former produces much more adverse effects to health. Individuals who are not obese can have a high BMI of visceral fat even though they possess a normal BMI; they have the same risk as obese individuals.
- Sub cutaneous fat is not as harmful as the previous ones, yet it might influx now mobility and lead to complications of obesity.
Metabolically Healthy Obesity (MHO) – Myth or Reality?
Metabolically Healthy Obesity (MHO) describes persons who otherwise fit the category of obese (generally BMI of 30 or above) but who do not exhibit most metabolic complications that are generally related to unhealthy levels of body fat- abnormal blood sugar, poor lipid levels, hypertension or insulin resistance. Considering that there is no single universal definition, most criteria involve the absence or very minimal presence of metabolic syndrome markers. As an example, MHO individuals tend to possess:
- Normal fasting glucose and triglyceride levels
- Favorable HDL (“good” cholesterol)
- Normal blood pressure
- Absence of drug treatment for diabetes, hypertension, or dyslipidemia
- No manifest cardiovascular disease
The percentage of MHO has a large range that depends on definition, but approximately 1030 percent of individuals with obesity (and more often premenopausal women) are thought to be MHO.
How Some People With Obesity Maintain Good Metabolic Markers
- Decreased visceral and hepatic fats: There is increased storage of fat in subcutaneous tissues (particularly lower extremities) rather than at an organ level.
- Their insulin and blood sugar are handled in the body more efficiently.
- Improved cardiorespiratory fitness, and physical activity
- Normal adipose tissue activity: The reduction of less inflamed adipocytes, more advantageous activity of adipokines (hormones); and lower release of adipokines hormones.
- Genetic and lifestyle factors: Influence the main factor is fat distribution and metabolism.
Risks and the Transient Nature of MHO
Despite having a healthier profile, MHO is not a benign or permanent state:
Transient Phenotype: A large portion of people with MHO will evolve metabolic complications (converted to MUO) as they age, later in life or gain more weight.
High Risk vs. Healthy Lean: Compared to healthy individuals of normal weight, MHO individuals continue to be at an increased risk of cardiovascular disease (CVD), type 2 diabetes, and death even though they remain less likely to develop an adverse outcome than MUO.
Longitudinal Studies: Within ten years, up to 30 to 50 percent of MHO subjects develop metabolic risk factors.
Specific Outcomes: MHO is associated with an elevated long-term risk of heart failure, stroke, along with other adverse circumstances relative to healthy-weight people, though not as great as risk in people with MUO.
The Biological Connection Between Obesity and Metabolic Dysfunction
The causal role of obesity to metabolic dysfunction is a complicated relationship where the increased body fat negatively impacts on insulin sensitivity, inflammation, hormone and organ activity. The pattern of fat storage, particularly the difference between visceral and peripheral fat has a leading role in such pathogenic process.
How Excess Fat Affects Insulin Sensitivity, Inflammation, and Hormone Levels
- The characteristic feature of metabolic dysfunction in obesity is insulin resistance. The is seen with enlarged adipocytes (fat cells), particularly in the visceral fat that results in the dysfunctional state in the fat tissue and the process of signaling insulin to other metabolic organs. This leads to blood glucose elevation and subsequent hyperinsulinemia. Important intracellular signaling cascades interacted can be listed as MAPK, PI3K/AKT and AMPK, which controls glucose uptake, adipogenesis and energy homeostasis. Insulin resistance occurs because of the disruption of signaling in these pathways.
- One of the key processes associated with chronic low-grade inflammation is the expansion of adipose tissue in obesity. Fat cells that have hypertrophied, and infiltration of immune cells (macrophages) produce proinflammatory cytokines such as TNF-a and IL-6. These cytokines also stimulate inflammatory pathways in adipocytes and other cells (NF-kappa B and JNK) and compromise further insulin sensitivity. Inflammation in adipose tissue interferes with metabolic dysfunction by sensing metabolic stress signals through toll-like receptors (TLR) and perpetuating inflammatory signaling cascades, which worsen their metabolic condition.
- Hormonal dysregulation entails disorders in the production of adipokines (fat tissue hormones) like leptin and adiponectin. Higher concentration of leptin in the case of obesity may cause leptin resistance which interferes with appetite control and energy spending. Money down, one of the insulin-sensitizing hormones called adiponectin, leads to insulin resistance and vascular issues.
Impact on Key Organs
Liver: Ectopic fat deposition in the liver (non-alcoholic fatty liver disease), impaired insulin disposal, and dysregulated lipid metabolism is caused by excess visceral fat and associated with free fatty acid flux to liver. This helps to cause systemic insulin resistance and dyslipidemia.
Pancreas: To overcome chronic insulin resistance, the pancreatic β-cells increase their insulin production to maintain normoglycemia; however, this may progress to the point of β-cell failure and impairment, a feature associated with diabetes type 2.
Cardiovascular system: Metabolic challenges with obesity, such as high blood pressure, abnormal levels of lipids in the blood, and inflammation impair the cardiovascular system and enhance cardiovascular disease. Insulin resistance and the inflammatory mediators released by autocrine activity of fats harm the endothelium of the vasculature and hamper cardiac performance.

Can You Improve Metabolic Health Without Losing Weight?
Certainly, metabolic health can be improved without losing a lot of weight, using strategies that include attention to diet quality, physical activity, restful sleep, and ways of responding to stress.
Role of Diet
Adopting a healthy eating approach, as seen in a Mediterranean or DASH diet, can improve metabolic fitness by causing less inflammation, improving lipid profiles, and stabilizing blood sugar even if the body’s weight remains the same. Eating diets that are high in fiber, lean protein, healthy fats and whole foods will help to increase your body’s insulin sensitivity and energy balance.
Benefits of Physical Activity
Regular exercise (particularly in the form of combining both aerobic walks and resistance training) allows insulin responsiveness to improve, blood pressure to decrease, as well as visceral fat reduced. These effects are realized even in the absence of major weight loss Exercise is associated with increased mitochondrial health, cardiovascular health, and emotional well-being: The waistline can decrease irrespective of any changes in BMI. Slow body exercise such as after meal walks may also be of help in blunting blood sugar elevations and lowered inflammation.
Sleep & Stress Management
Sleeping at least 7 restful hours at night helps in maintaining a balance of hormones (leptin/ghrelin), enhances insulin sensitivity as well as reducing cortisol levels which not only balances metabolism, but also maintains a check on appetite levels. Reduction of cortisol and systemic inflammation with behavioral programming of mindfulness or relaxation or yoga also enhances metabolic markers regardless of change in weight
Medical Interventions
| Intervention Type | Key Benefits | Considerations / Risks |
| GLP‑1 Receptor Agonists | Improved glycemic control, appetite reduction, reduced mortality and cardiovascular risk | GI symptoms, lean mass loss, individualized benefit analysis required |
| Bariatric Surgery | High rates of diabetes remission, durable weight/metabolic change | Surgical risk, nutritional deficiencies, lifelong follow‑up needed |
| Genetic & Metabolic Profiling | Precision treatment planning, early intervention potential | Research still evolving; access and cost issues |
| Regular Screening & Early Detection | Early intervention to prevent progression | Requires consistent medical engagement and follow-up |
You may also like to read: Improving Metabolic Health through Lifestyle Changes
Conclusion
Obesity and metabolic health are interconnected. Although not all obese people have impaired metabolic results, accumulation of body fat, particularly in the abdominal area, tends to disrupt other processes such as blood sugar levels, lipid levels and the maintenance of blood pressure. It is important to note that when speaking about real health, we should not focus on the weight: it should be much more. Instead of focusing on weight loss, people should prioritize metabolic wellness with balanced nutrition, exercise, good sleep, and stress reduction strategies because health outcomes can only improve severely, even without significant weight loss. To have a long and healthy existence, it is important to see health experts, get metabolic tests done on a regular basis and make lifestyle changes that are steady and sustainable.











