Three-Quarters of U.S. Adults Are Now Overweight or Obese

Obesity, Military Readiness, and National Security

• Several comments tie widespread obesity to reduced military eligibility, shrinking reserve forces, and concerns about sustaining high-casualty conflicts.
• Others counter that U.S. logistics, oceans, and nuclear deterrence make a direct invasion unlikely, so lack of “cannon fodder” is a limited security risk.
• Some argue that being militarily ready deters war; others see this framing as morally troubling.

Causes: Environment, Food System, and Behavior

• One thread blames PFAS, microplastics, and endocrine-disrupting contaminants; others are skeptical, noting lack of clear controls and pointing out heavy plastic exposure elsewhere.
• Many emphasize diet: large portions, sugar in everything, ultraprocessed foods, and sedentary lifestyles.
• Debate over how much is individual choice vs. structural: easy access to junk food, sedentary online activity, and weak incentives for healthy defaults.

Industry, Body Positivity, and Culture

• Processed food marketing is criticized, including campaigns that reframe “food shaming” as harmful and promote sugary products under the guise of body positivity.
• Some see “fat positivity” and “Healthy at Every Size” as having drifted from “you can improve health at any size” to “you can be healthy at any size,” which they call dangerous.
• Others note weight stigma and biased medical care as real harms that worsen health outcomes.

Drugs vs. Lifestyle Change

• GLP‑1 drugs (Ozempic/Wegovy) are discussed as highly effective for existing obesity, but with concerns about weight regain after stopping and likely lifelong use.
• Some argue chronic medication is acceptable, like for other lifelong conditions; others worry it replaces needed lifestyle change in a “want it now” culture.
• Behavior-change and healthier defaults are seen as underused but less profitable and harder to scale.

BMI, Metrics, and Health Risk

• Broad agreement that BMI is crude for individuals (especially athletes or muscular people) but useful at population scale.
• Alternatives like waist/hip ratio and body roundness index are suggested; many stress body fat %, blood work, and functional fitness.
• Strong consensus that obesity (especially BMI ≥30–35) correlates with higher morbidity and mortality; nuance remains for “overweight” ranges.
• Disputes arise over whether weight is mainly cause or consequence of other conditions (e.g., metabolic syndrome, sleep apnea), and how much can be fixed by willpower alone.