I have hyperemesis and the IVs help keep me out of the ER.
I didn't get a lot done into the soaking, because I focused on the question of zinc, phytates, absorption, metabolic requirement, etc.
phytates do seem to reduce zinc absorption, however it does not eliminate it as some sites claim. So you can still get zinc from plant sources. Good plant sources are nuts, seeds, legumes and whole grains. Pumpkin/squash seeds are particularly great with nearly 3mcg/oz.
Furthermore, calcium potentiates the negative effects of phytates on zinc, so a vegan diet (lower in calcium than meat/dairy) will potentially reduce that effect.
Additionally, zinc reduces iron absorption and vice versa, which again a vegan diet (lower in iron) will work toward reducing.
Beyond that, research has shown that the body has a homeostasis level for zinc (since it does NOT store zinc) and will dump everything over that level. The more zinc you consume, the more zinc you dump. The less zinc you consume, the less you dump. One study even showed that at a VERY low level (2-3/day) the body maintained that homeostasis.
Our bodies are not helpless against the evil plant components as we might be led to believe by people with an agenda.
Here's some interesting links on the subject.http://ods.od.nih.gov/factsheets/cc/zinc.htmlhttp://whqlibdoc.who.int/publication...123_chap12.pdfhttp://www.naturalproductsmarketplac..._0a1FEAT7.htmlhttp://www.healthalternatives2000.co...ion-chart.html
beyond all that, there are things we can do or not do to reduce zinc absorption such as drinking tea, alcohol, smoking, using hormonal BCP, etc.