The Call-On-Doc Guide to Obesity

Obesity is defined as having an excessive amount of body fat that negatively impacts health. Clinically, obesity is most often assessed using body mass index (BMI):

• BMI 18.5–24.9: Normal weight

• BMI 25–29.9: Overweight

• BMI 30 or higher: Obesity

While BMI is a useful screening tool, it does not capture the full picture. Providers may also consider waist circumference, body composition, metabolic health, and obesity-related conditions when evaluating an individual.

Obesity is recognized as a chronic disease, meaning it often requires long-term management rather than short-term solutions.

Obesity develops due to an imbalance between energy intake and energy use, but the underlying drivers are multifactorial.

Common contributing factors include:

• Genetics and family history

• Hormonal influences (including insulin resistance, thyroid disorders, and cortisol imbalance)

• Metabolic adaptations that make weight loss harder over time

• Sedentary lifestyle

• High-calorie, highly processed foods

• Sleep deprivation

• Chronic stress

• Certain medications (such as steroids, antidepressants, and antipsychotics)

Because these factors interact differently in each person, obesity treatment must be personalized.

Untreated obesity increases the risk of numerous medical conditions, including:

• Type 2 diabetes

• Heart disease and stroke

• High blood pressure

• High cholesterol

• Sleep apnea and breathing disorders

• Osteoarthritis and joint pain

• Fatty liver disease

• Certain cancers (including breast, colon, and endometrial cancer)

• Depression and reduced quality of life

Even modest, sustained weight loss can significantly reduce these risks.

Obesity is diagnosed through a medical evaluation that may include:

• BMI calculation

• Review of medical history

• Assessment of obesity-related conditions

• Laboratory testing (such as blood sugar, cholesterol, thyroid function)

A comprehensive evaluation helps guide safe and effective treatment options.

Lifestyle and Behavioral Changes

Lifestyle changes remain the foundation of obesity management and include:

• Nutritionally balanced eating plans

• Regular physical activity

• Sleep optimization

• Stress management

• Behavioral strategies for sustainable habits

Lifestyle interventions are most effective when paired with medical support.

For individuals who meet criteria, FDA-approved weight-loss medications may be recommended as part of a comprehensive treatment plan.

These medications work through mechanisms such as:

• Reducing appetite

• Increasing satiety

• Regulating blood sugar

• Supporting metabolic health

Common medication classes include:

• GLP-1 receptor agonists

• Combination appetite suppressants

• Metabolic regulators

Medication choice depends on medical history, weight-related conditions, and individual goals.

On top of getting a general measurement through BMI, there are also other types of obesity that can be determined based on how the condition develops in the body. Here are four common classifications: 

• Medical therapy may be appropriate if:

• BMI is ≥30

• BMI is ≥27 with obesity-related conditions

• Lifestyle changes alone have not been effective

• Long-term success often requires ongoing follow-up and adjustments.

While not all cases are preventable, risk can be reduced through:

• Balanced nutrition

• Regular physical activity

• Adequate sleep

• Early identification of metabolic conditions

• Ongoing preventive medical care

Early intervention leads to better long-term outcomes.

Managing obesity doesn’t have to be overwhelming or inaccessible. Call-On-Doc provides convenient online access to licensed healthcare providers who can evaluate weight concerns, order labs when needed, and prescribe evidence-based treatments—all from home.

With personalized care plans, prescription support, and no in-office visits required, Call-On-Doc makes long-term weight management more accessible and sustainable.