Ginger: what the research describes

Gingerols are among the better-studied spice compounds. What the published literature examines, how the doses compare to a cup of chai, and what it doesn't tell you.

By PGP Iyer · May 28, 2026 · 1 min read

Ginger (Zingiber officinale) is one of the better-studied culinary spices, thanks to a family of pungent compounds called gingerols. Most of that literature examines concentrated extracts, not the amount that ends up in a cup of chai.

What has ginger been studied for?

Gingerols are among the most-examined spice compounds in the clinical literature, and the largest body of that work sits in nausea research. Study designs, populations and doses vary widely across it, and the reviews themselves describe the findings as inconsistent. This page describes that research; it is not a claim that ginger tea will do anything for you.

How much ginger is actually in a cup?

Trials typically use standardised extracts in the region of 0.5–2 g of dried ginger per day, delivered as capsules. A cup of spiced chai contains a fraction of that, and the amount varies with how the spice is cut and how long it simmers. Whatever the literature reports about a capsule does not transfer to a teacup.

Flavour and tradition

Ginger's culinary role is the uncontroversial part: it is warming, faintly sweet and sharply pungent, and it is used after meals across many cuisines. That is why it sits in chai — for taste and tradition, which need no evidence base.

Good to know

Culinary and tea amounts are well tolerated by most people. Concentrated supplement doses can thin the blood slightly, so anyone on blood thinners or approaching surgery should speak to a clinician before using them.