When two pieces of good advice disagree about the same food, ComoApp follows one simple rule: the strictest, safest constraint wins at that decision point, and a gentle alternative is always offered. This page explains what that means, walks through an example, and says plainly why it is a cautious, defensible default rather than a clever trick.

The rule in one sentence

At every point where your conditions disagree, the plan takes the more protective option — the one that keeps you safe for the condition with the least room for error — and then offers a kinder substitute, so you are never simply left with "no".

A worked example

Imagine two conditions at once: high blood pressure and a history of calcium-oxalate kidney stones. Your blood-pressure guidance encourages potassium-rich foods like leafy greens (WHO, 2012). Your kidney-stone guidance asks you to limit high-oxalate foods, and spinach is near the top of that list (NIDDK).

The two collide over a bowl of spinach. Applying the rule: limiting oxalate is the more protective choice here, so spinach steps back. But the potassium goal still matters — so the plan offers a gentle alternative, a potassium-rich food that is lower in oxalate, such as banana or melon (NIDDK). You lose nothing you needed; you simply arrive at it by a safer route. This is not spinach being "bad" — it is one food sitting at the crossroads of two goals, and the plan chooses the road that cannot afford a wrong turn.

Why "strictest wins" is the safe default

Choosing the more protective option when advice conflicts mirrors ordinary clinical caution: when unsure, do not add risk. Relaxing the stricter constraint could undermine the condition that can least afford it; honouring it rarely causes harm, because the looser goal usually has many other ways to be met. Potassium is found in dozens of foods; a low-oxalate diet has far fewer substitutes for the kidneys.

Crucially, the rule is asymmetric on purpose. It errs toward caution, not toward restriction for its own sake — which is why the gentle alternative is not optional. A plan that only ever said "avoid" would be safe but unliveable, and an unliveable plan is one you abandon.

What the rule does not do

  • It does not diagnose, treat, or override your clinicians. ComoApp is a wellness guide, not a medical service.
  • It does not rank your conditions by importance — only the specific constraints that meet over a specific food.
  • It does not assume your body is average. Where your clinical team has given you personal limits, those come first.

Why we show our working

Every time the rule steps in, the plan can tell you which condition asked for the stricter option and why. Health guidance you cannot see the reasoning behind is hard to trust — and trust is the whole point of a companion that lives this close to your daily choices.

The safest constraint wins, and a gentle alternative is always offered. That single sentence is doing quiet, careful work on your behalf at every meal.