I didn`t see lowering hematocrit, it increases red blood cell count and the oxigen transporting capacity of the homoglobin in the red blood cells.
Looks like it will reduce iron absorption therefore I think it would lead to anemia, lower rbc/hematocrit.
In animal studies, phytic acid intake has been associated with reduced absorption of certain minerals, especially iron. As a result, people who are anemic or iron deficient should talk with a health care provider about increasing iron supplementation before taking phytic acid supplements. Phytic acid is a chemical that naturally occurs in legumes, cereals, and nuts. Phytic acid, which can account for 1–5% of the weight of these foods, is a potent inhibitor of iron absorption.
Phytic acid is a strong chelator of important minerals such as calcium, magnesium, iron, and zinc, and can therefore contribute to mineral deficiencies in people whose diets rely on these foods for their mineral intake, such as those in developing countries.[7][8] On the other hand, it has been shown that phytic acid is protective against osteoporosis, and low consumption of phytate should be considered a risk factor for osteoporosis.[9] It also acts as an acid, chelating the vitamin niacin, which is basic, causing the condition known as pellagra.[10] In this way, it is an anti-nutrient, despite its theraputic effects (see below) which simultaneously make it a beneficial phytochemical.[1] For people with a particularly low intake of essential minerals, especially young children and those in developing countries, this effect can be undesirable.