Iridara

How the science holds up

Iridara — the evidence behind our coaching, graded honestly. Last reviewed July 2026. (v1.3 — RO native review applied 27 Jul 2026.)

Most nutrition apps tell you their advice is backed by science and leave it there. We think you deserve to see how well each part is actually supported — including the parts that are our best judgment rather than settled fact. So we graded every design choice in Iridara against the research, and we did it conservatively: where the evidence was mixed, we took the more cautious reading. Here is the honest picture.

How to read the badges

Well-established

Well-established

Backed by repeated clinical trials, large studies, or major health guidance. We lean on these confidently.

Supported, with nuance

Supported, with nuance

The effect is real but context-dependent, indirect, or measured with limits. We speak to patterns and direction, never certainty.

Our cautious choice

Our cautious choice

Plausible but thin evidence, or a deliberately careful engineering setting. We use these because they err on the side of safety — and we tune them as we learn from real use.

What carries the coaching

Getting enough protein and fibre

Well-established

Adequate protein protects muscle, and fibre is tied to lower risk of several chronic diseases. Our coaching is built around eating enough of both — not around cutting. One honest caveat, because a protein target is not right for everybody: if you have a kidney condition, your protein target is something a clinician sets for you, individually — an app cannot do that. We ask about this from age 50 (undiagnosed kidney trouble is more common than people think), and if there is any sign of it we simply stop coaching protein and point you to your doctor. We never set a low protein target either: that is a clinical decision too, and getting it wrong in that direction carries its own risks.

Eating enough, not eating less

Well-established

The strongest, safest message in nutrition is nourishment over restriction. Iridara flags under-eating with the same seriousness as over-eating — under-eating is never praised.

No weight-loss coaching below a healthy weight

Well-established

If your BMI is under 18.5, we will not coach a calorie deficit — the goal switches to maintenance. This follows WHO/CDC underweight guidance and the health risks at low body weight.

Fibre and long-term health

Well-established

Higher fibre intake is consistently linked to lower rates of chronic disease. It is one of the few places we can point to strong evidence, and we do.

Supported — where we stay careful

Food processing as a quality signal

Supported, with nuance

Heavily processed foods are a reasonable risk marker, but the label alone is not a verdict. We score what processing usually carries — energy density, added sugar, low fibre — as one input among several, not a single “good/bad” stamp.

Meal timing

Supported, with nuance

Eating in better alignment with your day — and not right before sleep — has modest support. We surface it as one gentle, occasional nudge, never a per-meal timing score, and we never nudge you to skip or delay breakfast.

Your calorie and macro targets are estimates

Supported, with nuance

The formulas we use estimate your needs well on average, but individual variation is wide. We show targets as estimates and ranges — a helpful reference point, not a precise truth about your metabolism.

The eating-disorder safety net

Supported, with nuance

Our screening signals are defensible as reasons to ease off and point toward support — not as a diagnosis. If your logging pattern suggests that targets may not be serving you, the app quietly pauses coaching and targets — the goals to hit, the gaps to close, the streaks. It never hides your own food record from you: your meals, their scores and their estimates stay exactly as they are. And before it reads anything into a light week, it asks whether you have simply been missing meals — because a busy week and a restrictive one look the same on a chart, and only you know which it was. It never labels you, never stores an assessment, and never alerts anyone.

Our cautious choices — honest about the thin spots

The “never below your BMR” floor

Our cautious choice

There is no proven universal minimum intake, so we set a personalized floor at your estimated resting energy needs. It is a careful choice that errs toward eating more — not a physiological law.

The exact deficit size and screening thresholds

Our cautious choice

The specific deficit we apply (~18%, capped at 20%) and the exact points where the safety net activates are conservative starting settings, not literature-derived optimums. They are deliberate first choices, and we expect to adjust them as we learn how the app behaves in everyday use.

Post-meal check-ins

Our cautious choice

Asking how a meal left you feeling is useful for reflection, but the evidence is thin and these signals can mislead for some people. We never adjust your targets from them, and when the safety net is active the app stops prompting them.

Why we tell you all this

Competitors sell precision they don’t have — “your exact metabolism,” exact calorie verdicts. We would rather be honest about what is established and what is our best careful estimate. That honesty is the point of Iridara, not a footnote to it. It is also what keeps us firmly on the wellness side of the line: Iridara is a wellness and education tool, not a medical or diagnostic device.

This page summarizes our internal Scientific Basis & Evidence Register, which reconciles two independent AI deep-research reviews against the primary literature (Hall 2019; Fang 2024; Morton 2018; Reynolds 2019; Mifflin 1990; WHO/CDC BMI guidance; and others). The full source list is available on request.