wakha

What science says about a trip like this

How we grade the evidence

  • Strong: Many studies, including reviews or trials, point the same way.
  • Moderate: Several good studies agree, but with limits (mostly surveys, or short-term effects).
  • Mixed: Some studies find it, others don't, or the effect is small.
  • Weak: Few or small studies, or none in travellers. Treat it as an idea, not a fact.
Sources, checked 2026-11-14

    Say yes to the trip

    Tell us your email and we'll write when the Wakha app is ready: offline, every city, every answer.