Mice live longer when inflammation-boosting protein is blocked

Original Article ↗ Hacker News Discussion ↗

Role and Evolutionary Purpose of Inflammation

  • Inflammation is described as a core part of the immune response: it helps fight infections, heal injuries, and even suppress cancer when functioning properly.
  • Several comments stress that without inflammation “you’ll die,” but that too much or misdirected inflammation causes disease.
  • Evolutionarily, traits are favored if they don’t kill or sterilize individuals before reproduction; strong inflammatory responses may be beneficial early in life but harmful later.
  • Some speculate that current human biology is tuned for higher parasite loads and pre-modern environments.

Acute vs. Chronic Inflammation & Lifestyle

  • Acute, localized inflammation from injury or infection is generally portrayed as beneficial and required for healing.
  • Chronic inflammation is linked in the thread to autoimmunity, asthma, some neurodegeneration, and “first world” lifestyle factors: excess calories, high sugar/high-carb diets, stress, pollution, smoking, alcohol, sedentary behavior.
  • Diets mentioned as lowering inflammation include low-carb/keto, caloric restriction, intermittent fasting, and Mediterranean-style patterns; evidence quality is acknowledged as variable.
  • Exercise is said to transiently increase but then lower inflammation; blocking inflammation around exercise (e.g., NSAIDs) may blunt training adaptations.

Blocking Inflammation (IL-11 and Others) and Risks

  • Many emphasize that inflammation is not a single thing; it’s a complex network of cytokines with context-dependent effects.
  • Blocking a specific cytokine (like IL-11) might extend lifespan in mice, but commenters worry about impaired infection control, wound healing, and unknown long-term tradeoffs.
  • Some note parallels with steroids and NSAIDs: effective at reducing inflammation, but with serious side effects (GI, bone, possibly cardiovascular).

Supplements, NAD+, and Biomarkers

  • Inflammation is said to consume NAD+; this underpins interest in B3 derivatives (niacin, NMN, NR) as “anti-aging” adjuncts.
  • There is debate over whether healthy, younger people benefit from NAD+-boosting supplements; some say there is “virtually no benefit” and potential downsides.
  • Biomarkers like CRP and calprotectin are mentioned as practical measures of systemic inflammation.

Mouse Studies, Translation to Humans, and Skepticism

  • Multiple comments caution that mouse results often fail to translate to humans; cited estimates suggest a low success rate for animal-to-human therapeutic translation.
  • Artificial sweeteners and vitamin C in rodents are used as examples where rodent data misled human risk perception.
  • Some argue these mouse IL-11 findings are mainly a signal for further research, not something to act on clinically or personally yet.