Sesame is among the oldest oilseed crops cultivated by humans, with archaeological and textual evidence of cultivation in the Indian subcontinent and Mesopotamia dating back over 3,500 years. Sesame oil was one of the earliest plant oils used in cooking, medicine, and religious ritual, and ancient Assyrian mythology even held that the gods drank sesame wine the night before they created the earth.
The phrase "open sesame" from One Thousand and One Nights reflects the plant's genuinely notable botanical feature — its seed pods split open abruptly when they dry and mature, which likely inspired the magical phrase for a door opening on command. Sesame spread along ancient trade routes throughout Africa, the Middle East, and Asia, becoming a dietary staple across an unusually wide range of independent culinary traditions.
Sesame's evidence base shows real signal but with more inconsistency between reviews than several other seeds in this Atlas. A 2025 GRADE-assessed meta-analysis of 13 trials (521 participants) found significant reductions in HbA1c and C-reactive protein (an inflammation marker) with sesame supplementation. However, an earlier, separate meta-analysis of inflammatory biomarkers specifically found sesame reduced one inflammatory marker (IL-6) but not others (CRP, TNF-alpha) — a direct point of disagreement with the more recent review on whether CRP actually improves.
A separate GRADE-assessed review focused specifically on blood pressure outcomes rated the overall certainty of evidence as "very low" across all outcomes studied, citing high heterogeneity, small sample sizes, and methodological limitations — a notably cautious verdict from the reviewers themselves. This pattern of real but inconsistent findings between independent reviews, plus explicitly low-certainty grading from at least one rigorous assessment, is why "Limited-Moderate" — rather than a higher rating — is the honest call here.
Seeds toasted and eaten whole, ground into paste (tahini), or pressed into oil; a defining ingredient across Middle Eastern, East Asian, and African cuisines.