Of all the claims made for this plant, the ones about the seed are the easiest to check. When you check them, they hold up, but they are more modest than the usual version. Hemp seed protein contains all nine essential amino acids, but lysine is its limiting amino acid, and its protein-quality score is below soy and animal proteins. Unlike almost everything else discussed on this forum, the seed is an ordinary food. In Thailand it is a regulated food with its own rules.
Hemp seed is not cannabis flower. It contains no meaningful THC and falls under a different regulatory framework. Nothing here is medical advice, and nothing here claims hemp seed treats any condition.
1. What the Current Literature Confirms
The figures below come from two sources. The first is a 2025 review by Kaçar, Kose and Kaya Kaçar, “Dietary hempseed and cardiovascular health: nutritional composition, mechanisms and comparison with other seeds”, Frontiers in Nutrition 12:1669375 (doi:10.3389/fnut.2025.1669375). The second is a protein-quality study by House, Neufeld and Leson, J. Agric. Food Chem. 2010;58(22):11801–11807 (doi:10.1021/jf102636b).
| Property | Figure |
|---|---|
| Protein content | About 24.8 g per 100 g of whole seed, so roughly 7 g in a 30 g serving |
| Essential amino acids | All nine present; lysine is the first limiting amino acid |
| Protein composition | Mainly edestin (60–80% of the protein) plus albumin |
| PDCAAS, whole seed | About 0.49–0.53 |
| PDCAAS, hulled seed | About 0.63–0.66 |
| For comparison | Soy protein and animal proteins score roughly 0.9–1.0 |
Removing the hull improves digestibility, which raises the score. House and colleagues conclude that hemp protein scores equal to or better than certain grains, nuts and some pulses. That makes it a good plant protein. It is not the equal of soy or animal protein. In a mixed diet, lysine-rich foods such as legumes make up the gap.
2. Two Common Myths, Corrected
“Hemp seed is 65% protein” is wrong. Edestin makes up 60–80% of the protein, and protein makes up about 25% of the whole seed. These are two very different claims, and only the second is true.
“Only soy has more protein” needs a qualifier. Hemp seed’s roughly 25% protein is good but not exceptional among seeds and legumes. Soy and several others contain more. Hemp’s protein quality is also lower, as the PDCAAS figures above show. What sets hemp apart is the edestin-plus-albumin profile and the oil that comes with it.
Getting these right costs nothing. Nutrition claims can be checked in a way historical claims cannot, and one wrong number is enough to lose the buyers who actually read labels.
3. The Fat Side, Briefly
Hemp seed is typically over 30% oil. Its composition, and why hemp seed oil is not CBD oil, are covered in topic 1356. Two points matter here:
- Omega-6 : omega-3 ratio: normally about 2:1 to 3:1 in hemp seed oil (Callaway, Euphytica 2004;140:65–72, doi:10.1007/s10681-004-4811-6). It varies by cultivar.
- Gamma-linolenic acid (GLA): roughly 0.5–6% of the oil, depending on cultivar. GLA skips the slow δ-6-desaturase step the body otherwise needs to convert dietary omega-6. Few common foods contain it.
Whole seeds, hulled hearts, oil and protein powder are ordinary foods eaten in ordinary amounts, not supplements.
4. The Historical Claim, Framed Honestly
Hemp literature widely describes hemp seed as a peasant food in Eastern Europe and Russia and as a long-standing part of birdseed mixes. A frequently repeated story about Czechoslovak tuberculosis research in the 1950s has never been verified and should not be cited as evidence.
5. Why It Disappeared and Came Back
Hemp seed lost its place in Western diets commercially before it was prohibited. Cheap industrial vegetable oils and cheap animal protein made a labour-intensive seed crop uncompetitive. In the United States, the 1937 Marihuana Tax Act then made cultivation impractical. The 1961 Single Convention on Narcotic Drugs, by contrast, explicitly does not apply to cannabis grown only for industrial (fibre and seed) or horticultural purposes (Art. 28(2)). Most later barriers came from national laws.
What changed is regulatory: many major markets now allow hemp seed foods on the basis that the seed contains no meaningful THC.
6. The Thai Position — the Practical Part
This distinction decides whether a business is lawful, so read it carefully.
Cannabis flower is a controlled herb under the Notification of the Ministry of Public Health Re: Controlled Herbs (Cannabis) B.E. 2568, issued 26 June 2025. It may be dispensed only against a prescription on form PT 33 from an authorised practitioner. Each prescription covers at most 30 days and cannot be refilled, and the flower must come from a GACP-certified site. Online sale, advertising and recreational use are not allowed.
Extracts fall under a separate licensing regime, which two Ministerial Regulations of B.E. 2569 tightened in 2026. See topic 1330.
Hemp seed foods fall under food law. The key instrument is MOPH Notification No. 425 (B.E. 2564) on foods containing hemp seed, hemp seed oil or hemp seed protein. It sets maximum THC and CBD levels for each food category, in mg/kg. It was later amended: according to press reports, Notification No. 437 (B.E. 2565) dropped the CBD limit and kept the THC limits, so work from the current consolidated text. Products need Thai FDA food registration before sale, and food labelling rules apply.
Advertising a food requires Thai FDA advertising approval. Topic 1293 covers the rules for cannabis and hemp food. Selling or promoting a registered hemp seed product online is generally possible, but only within those registration, labelling and advertising rules. Confirm with the Thai FDA rather than assuming.
In short, the seed side is regulated food, not a controlled herb. That is why it is where straightforward lawful business is possible in Thailand, through registration and approval.
If you produce or sell hemp seed products in the region: what does the labelling actually have to say, and has anyone had a health claim or an advertisement rejected? The nutrition science is checkable. What you may print on a package is a separate and more practical question.
General information about hemp seed as a food; not medical, nutritional or legal advice.