In this 2001 UK Guardian article about a covered-up mass pesticide poisoning in Spain, the journalist asserts that the same thing was behind the 1989 deaths in the US attributed to tainted L-tryptophan supplements.

The reference in question is about five-sixths down the page, in a short paragraph. The article still reflects the government ban on tryptophan that lasted a few years. The ban was lifted by the time I started futzing around with nutritional therapy — according to Wikipedia, in 2005. However, misinformation about the ban still being in place was repeated all over the internet for many years.

FYI I have not looked into this topic beyond a brief internet search, which revealed a lot of questioning of the official story, but with suspicions falling on the genetic-engineering aspect of the supplements’ manufacture.

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The content on this page was first posted in June 2018.

Marjorie smiling, wearing an orange shirt.

Marjorie R.

Marjorie is the creator of, a record of her and her guest authors’ experiences with non-prescription health solutions. She is a third-generation nutritional-therapy self-experimenter.

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