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Glossary Item Description

Tryptophan is an an essential amino acid which the body uses to help make niacin and serotonin.


TSO is an acronym for trichuris suis ova, also known as the pig whipworm larvae, sometimes used as a treatment for gastro-intestinal and immune problems.


TTFD is an acronym for thiamine tetrahydrofurfuryl disulfidean, a synthetic form of thiamine, which is sometimes taken as a nutritional supplement or used as an agent in chelation.

Tuberous Sclerosis

Tuberous sclerosis is a rare genetic condition that causes benign tumors to grow on vital organs.

Typical Antipsychotics

Typical antipsychotics is a term used to describe the older antipsychotics, such as haloperidol, as opposed to the newer atypical antipsychotics, such as risperidone.


Tyrosine is a non-essential amino acid the body makes from another amino acid called phenylalanine.

About This Glossary

This glossary is designed to explain some of the jargon and gobbledygook used by some people when they talk about autism or research..

You may be able to find more information, including links to other parts of this website, by clicking on the title of an item.

If you can't find the word you are looking for, or you know of a word we should include, please email info@researchautism.net


The fact that an intervention is listed in this glossary does not necessarily mean that we agree with its use. Nor does it necessarily mean that there is any scientifically valid or reliable evidence behind it.