article_snippet.sent: Sunflower seeds are a good source of zinc.
article_snippet.sent: Zinc is very important for many of the enzyme systems in the body, for immunity and for the production of hormones, including insulin and sex hormones.
article_snippet.sent: Zinc in plant foods is less bioavailable that in animal foods because Zinc in plant foods binds to phytate (a fibre) that makes it difficult to absorb, so vegetarians may want to consider a supplement of about 15-20mg a day.
article_snippet.sent: Sufficient supply of zinc is needed to mobilise and release stores of vitamin A. Food sources: animal livers, fish liver oils and green, red, orange and yellow fruits and vegetables. 