Iodine deficiency during pregnancy may result in cretinism (mental retardation in children), deafness, autism, and delayed brain development and is the leading cause of preventable mental retardation. As the bodyâs iodine levels fall, hypothyroidism may develop, since iodine is essential for making thyroid hormone. While this is uncommon in the United States, iodine deficiency is the most common cause of hypothyroidism worldwide.
1 Practice nursing for a minimum of 960 hours during the previous five years. 2  Successfully complete an approved re-entry program within the two years preceding renewal. 3  Graduate from an OSBN-approved nursing program within the past five years.
Cancel. An LPN, or licensed practical nurse, is required to complete a training program that lasts between one and two years. Find a job as an LPN in a nursing home or doctor's office with advice from a family doctor in this free video on medical careers.Part of the Video Series: Medical Careers.n LPN is a licensed practical nurse, and that is a...one of the nursing fields. An LPN degree usually requires about a year of training. Some of these programs are as much as two years, but most are about a year.