β-Hexachlorcyclohexane is a byproduct of the production of insecticide lindane (γ-hexachlorocyclohexane). Technical grade hexachlorocyclohexane contains about 5-12% of technical grade hexachlorocyclohecane. Elevated levels of β-Hexachlorcyclohexane in blood was linked with risk of Alzheimer's disease and Parkinson's disease. β-Hexachlorcyclohexane is a xenoestrogen and promotes growth and invasiveness of breast tumor cell lines.

β-Zearalenol is a nonsteroidal estrogen of the resorcylic acid lactone group related to mycoestrogens found in Fusarium spp. β-Zearalenol is the β epimer of α-zearalenol and along with α-zearalenol is a major metabolite of zearalenone formed mainly in the liver but also to a lesser extent in the intestines during the first-pass metabolism. β-Zearalenol is about the same or slightly less potent as an estrogen relative to zearalenone. Contamination of grains by Fusarium species, notably maize, gives rise to high levels of zearalenol and is regarded as an important food quality issue for both human and animal health.

Norharman or beta-carboline (9H-pyrido[3,4-b]indole) is a neuroactive alkaloid first isolated from Peganum harmala L. It is implicated in a number of human diseases including Parkinson's disease, tremor, addiction and cancer. Norharman formed endogenously but external sources have been identified (among others fried meat and fish, meat extracts, alcoholic drinks, coffee brews, tobacco smoke). It inhibits monoamine oxidase and indoleamine 2,3-dioxygenase. In addition norharman binds with high affinity to imidazoline I2B receptors. Plasma norharman levels are elevated in chronic alcoholics and Parkinson's disease patients.

Betadex is a nonreducing cyclic compound composed of seven alpha-(1-4) linked D-glucopyranosyl units. It is a pharmacologically inactive substance. Betadex is useful for stabilizing, solubilizing or delivering intermediate size molecules. Cyclodextrins are cyclic oligosaccharides that have been used to modulate the composition of cholesterol and other lipids in biological membranes and have also been used as pharmaceutical excipients in the formulation of hydrophobic drugs. More recently, 2-Hydroxypropyl-β-cyclodextrins (HPβCDs) have gained attention as a potential therapeutic intervention for Niemann-Pick Disease Type C1 (NPC1) disease. HPβCDs are complex mixtures of different species, and variations in production may lead to differences in composition. 2-Hydroxypropyl-β-cyclodextrin dose-dependent effects against dysfunctional intracellular cholesterol trafficking in NPC1 cells.