This led to suspicion that some athletes testing positive on boldenone undecylenate did not actually abuse the hormone itself but consumed food rich in campesterol or similar phytosteroids.

However, they are plant steroids and it is believed they cannot be absorbed or used in human body.

I predict that the future of ergogenic nutrition will be in isoflavones and plant steroids.

By contrast plant steroids are produced via cycloartenol.

It is similar to plant steroids like digitalis, which is famous as a stimulant for the heart.

Medical evidence suggests plant steroids are not anabolic in humans, however comprehensive research has not be conducted to prove this.

Key words: 16-ketosteroids, plant steroids, Trichilia hirta, trichiliasterones.

It is produced from the plant steroids, Dioscorea mexicana, a plant of the yam family native to Mexico.

Saponins (plant steroids, often glycosylated)

Almonds also contain phytosterols that are naturally occurring plant steroids that block the intestinal tract from absorbing all types of fats.

Plant steroids include steroidal alkaloids found in Solanaceae, the phytosterols, and the brassinosteroids (which include several plant hormones).

Plant steroids and sterols are also produced from terpenoid precursors, including vitamin D, glycosides (such as digitalis) and saponins (which lyse red blood cells of herbivores).

It is the starting point for the synthesis of almost all plant steroids, making them chemically distinct from the steroids of fungi and animals which are instead produced from lanosterol.

The brassinosteroid hapten which differs from the natural brassinolide by the position of a methyl group on the C24 carbon gave a considerably higher ELISA value than the natural growth regulator and several other plant steroids.

While working on a series of plant steroids called sapogenins, he realized that the structure of the side chain of one of the compounds, sarsasapogenin, had been incorrectly described in the literature: rather than having an unreactive "double-tetrahydrofuran" side chain, it actually had a much more reactive "ketone spiro acetal" side chain.