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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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Hair Health

Nutrient deficiencies can cause hair loss, and correcting them can help. Beyond that correction, food evidence for hair is very thin.

Hair growth, strength and related nutrient status.

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

Insufficient evidence

1 food

Not enough human research to say anything useful yet.

Pumpkin seeds
Cucurbita pepo
The hulled green kernels of certain pumpkin and squash varieties, eaten raw or roasted. The USDA reference entry is for the dried…
Hair growth and strength: There is not enough dependable human research behind pumpkin seed oil and hair loss. A single small trial is widely cited and has not been convincingly reproduced.
Nuts & SeedsInsufficient