What makes 52 Hertz so compelling a study subject is that large baleen whales (like blue and fin) communicate at a frequency range that ends at less than half the 52 Hz range (typically 15 to 25 Hz) which explains why the whaleâs calls go unanswered â no other whale (it seems) can hear it.
Also, many people are eating primarily vegetarian diets, and iron is less available for absorption from vegetable sources. The RDA for iron in a vegetarian man or post-menopausal woman is 14 milligrams per day, compared with 8 milligrams with a mixed diet. Thus, in attempts to make healthy diet changes, many people are ending up with too little iron. The risks of iron deficiency are many. Inadequate iron is one of the major causes of anemia. It can also be seriously harmful to the immune system and lead to both cardiovascular and neurological complications.
This is why the amount of iron you need shoots up during pregnancy from 18 to 27 milligrams (mg) per day. Because it's hard to get enough iron through diet alone, the Centers for Disease Control and Prevention recommend that pregnant women take a daily supplement of 30 mg of elemental iron as a preventive dose.uring pregnancy, the amount of blood in your body increases until you have almost 50 percent more than usual. And you need more iron to make more hemoglobin for all that additional blood. You also need extra iron for your growing baby and placenta.