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Submitted by: Wray

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Hi Diane You are correct. Phytosterols are molecularly similar to cholesterol which is found in animals. Cholesterol is the starting point for the steroid hormones made naturally in animals, including humans. Plants such as the soy bean, Dioscorea species of yams, fenugreek, sisal, calabar bean, some lilies, yucca, some solanum species, maize and many more contain phytosterols. Some of which are stigmasterol, diosgenin, sitosterol, campesterol, hecogenin, smilagenin, sarsasapogenin, solasodine. As these sterols have a similar molecular structure to progesterone, they are used as starting points for it's synthesis. Progesterone is then further synthesised into testosterone, oestrogen, cortisone etc. This takes place in a lab requiring specialised equipment. Companies then buy their progesterone from these labs to incorporate into creams, injections, suppositories etc. Take care Wray

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