Several studies which focused on the effect of the
addition of phosphates on consumer health have been
published and these studies have given contradictory
results. The kidneys easily control the blood phosphorus
level and efficiently excrete any excess of phosphorus;
hence, up to now, there is no evidence that higher
phosphate intakes are detrimental to bone health or to
bone calcium excretion in the urine in healthy adults not
having problems with kidneys . However, in the study of Huttunen
et al. (2006) with adult rats, excessive intake of dietary
phosphate without the company of calcium caused rise
in concentration of serum parathyroid hormone and
hindered mineral deposition into cortical bone, leading to
lower bone mineral density. Generally, to avoid potential
adverse risks on health, Standing Committee on the
Scientific Evaluation of Dietary Reference Intakes (1997)
has recommended a tolerable upper intake levels (ULs)
for adults, 4 g per day of phosphorus.