Answer:
Sorry for the long explanation, but this should cover everything since I've had an assignment similar to this.
She could have another type of anemia besides iron deficiency anemia. A deficiency of Folate could be causing this. To correct her anemia, she needs more Dark green vegetables in her diet. Gertrude's unborn baby is also at risk for spina bifida. Henry could have a vitamin B12 deficiency because he doesn't consume animal products and doesn't take a vitamin B12 supplement. Henry can correct his deficiency and maintain his vegan lifestyle by taking a vitamin B12 supplement, eating foods that are designed for vegans, and have vitamin B12 added to them. It took 3 years for his deficiency to show up because Vitamin B12 can be stored long term in the liver.