Aspartame aggravates atherosclerosis through insulin-triggered inflammation

Role of Aspartame and Artificial Sweeteners

• Some argue that artificial sweeteners (aspartame, sucralose, acesulfame-K) may trigger insulin via sweet taste, lowering blood sugar and increasing hunger, potentially worsening obesity despite low calories.
• Others state prior consensus that aspartame does not significantly raise insulin, though newer work (including the linked paper) suggests measurable effects; the strength and relevance of these effects are disputed.
• A few people report n=1 effects: intense hunger when consuming sweeteners on an empty stomach, headaches (especially from sucralose), or severe gas when combining diet soda with sugary foods.
• Counterexamples: long-term heavy diet soda users who lost large amounts of weight on keto or GLP‑1 drugs without reducing aspartame, implying it’s not universally obesogenic.

Study Design, Doses, and Safety Debate

• Multiple commenters stress the study is mostly in mice, with a small N, using genetically modified animals and high per‑kg doses; one estimate equates this to 30+ cans of diet soda per day in humans.
• Some argue that decades of widespread human consumption without clear epidemiological signals implies that moderate intake is “reasonably safe on average.”
• Others are more cautious, pointing to emerging concerns about various sweeteners (including erythritol) and potential metabolic and microbiome effects, but concrete human data are seen as limited or mixed.
• There is disagreement on whether any claim of “all artificial sweeteners cause weight gain and other harms” is supported; several call such statements unproven or false without strong citations.

Obesity Epidemic: Broader Explanations

• Many argue it’s a mistake to fixate on aspartame; the bigger picture is rising calorie intake and environmental change.
• Factors cited:
  • Cheaper, energy-dense food (especially vegetable-oil-based and ultra-processed).
  • Growth of fast food and eating out, engineered “hyperpalatable” products, aggressive marketing, and ubiquitous large portions.
  • Car-centric lifestyles and dramatic declines in routine walking (e.g., children no longer walking to school).
  • Reduced home cooking/time, dual-income households, and convenience culture.
  • Possible contribution from reduced smoking (loss of nicotine’s appetite suppression).
• “Calories in, calories out” is recognized as physically true, but many see it as too simplistic for explaining population-level change; social, economic, and food-system dynamics are emphasized.

Processed vs Ultra-Processed Food

• “Processed food” is criticized as almost meaningless, since nearly all food is processed to some degree.
• “Ultra-processed” is proposed as the key category: industrial formulations with additives, stabilizers, and engineered textures that people can’t realistically make at home.
• Skeptics contend that even “ultra-processed” definitions partly encode prior assumptions about what is unhealthy.

International Comparisons

• Comparisons with Japan and parts of Europe highlight: smaller portions, less sugar-laden bread, more walking and transit use, and different fast-food norms.
• Some suggest slower-absorbed carbs (e.g., rice, some noodles) and different food culture may moderate insulin spikes and overeating, though details are left as speculative/unclear within the thread.

Practical Attitudes in the Thread

• Several commenters who like diet soda plan to keep drinking it, focusing more on overall diet (especially carb/ultra-processed reduction) than on eliminating aspartame.
• Others are motivated to cut back due to subjective side effects, perceived addiction, or the new paper, but there is no consensus “must-quit” message.
• Overall, the discussion treats aspartame as one potentially nontrivial factor within a much larger, more complex obesity and metabolic health landscape, not as the singular cause.