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Know your food. Eat with purpose. We tell you what the evidence says, not what you want to hear.

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Know2Eat is a reference tool for general information about food. It is not medical advice, cannot diagnose or treat anything, and is no substitute for a clinician who knows your history.

Nutrient data from the USDA FoodData Central public datasets. Citations retrieved from PubMed. © 2026 Know2Eat — built by The TradeStack.

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Respiratory Health

A thin evidence area for whole foods. Most of what exists is observational dietary-pattern research rather than trials of single foods.

Airway function and respiratory symptoms.

2 foods, grouped by the strongest rating any of its claims in this area reaches. Ratings describe the research, not the food. How ratings are decided.

Moderate evidence

1 food

Several human studies point the same way, with real caveats.

Honey
Concentrated floral nectar processed and dehydrated by honeybees, composed overwhelmingly of fructose and glucose with small…
Respiratory function: Reviews of randomised trials in children with upper respiratory infections report that a dose of honey at night reduces cough frequency and severity somewhat more than no intervention or placebo, with effects comparable to some over-the-counter cough preparations. Trials are small, hard to blind convincingly, and the outcome is parent-reported. It must not be given to infants under twelve months.
Natural SweetenersModerate

Limited evidence

1 food

Early human work, or mostly lab and animal research.

Thyme
Thymus vulgaris
A small-leaved Mediterranean subshrub used fresh or dried, and one of the few herbs that stands up to long cooking. Its…
Respiratory function: Thyme appears in standardised combination herbal syrups, usually with ivy leaf or primrose, that have been tested in acute bronchitis and report faster resolution of cough. Those are specific manufactured extracts studied largely in manufacturer-run trials, not the culinary herb, and thyme’s individual contribution has not been isolated.
HerbsLimited