Chapter 12 is one you’ll probably enjoy because it bridges physiology and practical prenatal care. Unlike earlier chapters that focused on anatomy and biology, this one answers the question, “How should a pregnant woman eat and care for herself to support a healthy pregnancy?” As both a childbirth educator and future midwife, much of this chapter will directly inform your counseling of clients.

Chapter 12 – Maternal Nutrition and Health

1. Read Coad, Anatomy & Physiology for Midwives, 4th edition, chapter 12.
2. Write out your answers to Coad, Chapter Case Study, page 334.
3. Create a Coad “Chapter 12 Study Sheet.” Include the following:

Learning Goals

□ Explain the nutritional requirements of pregnancy.

□ Describe why nutrient needs increase during pregnancy.

□ Explain how the fetus adapts to inadequate nutrition.

□ Relate undernutrition and overnutrition to pregnancy outcomes.

□ Discuss appropriate pregnancy weight gain.

□ Explain how maternal nutrition affects lifelong health of the child.

Essential Vocabulary

Nutrition

• Macronutrients
• Micronutrients
• Calories (energy requirements)
• Basal metabolic rate
• Nutrient density

Major Nutrients

• Protein
• Carbohydrates
• Fat
• Fiber
• Water

Vitamins & Minerals

• Folate
• Iron
• Calcium
• Vitamin D
• Vitamin A
• Iodine
• Zinc
• Magnesium
• Vitamin B12
• Choline
• DHA (omega-3 fatty acid)

Pregnancy

• Gestational weight gain
• Low birth weight (LBW)
• Intrauterine growth restriction (IUGR/FGR)
• Large for gestational age (LGA)
• Small for gestational age (SGA)
• Neural tube defects

Maternal Health

• Obesity
• Malnutrition
• Anemia
• Hyperemesis gravidarum
• Gestational diabetes

Draw

1. Maternal Nutrition Flow

Mother eats

↓

Digestion

↓

Maternal bloodstream

↓

Placenta

↓

Baby

2. Macronutrients

Draw a plate divided into:

• Protein
• Healthy fats
• Complex carbohydrates
• Vegetables/Fruit

3. Major Nutrients

Create a simple table:

Nutrients I Must Know

Concepts I Must Understand

• Increased energy needs during pregnancy
• Increased protein requirements
• Micronutrient deficiencies
• Weight gain recommendations
• Placental nutrient transfer
• Fetal programming (developmental origins of health and disease)
• Maternal malnutrition
• Maternal obesity
• Food safety during pregnancy

Midwifery Connections

Clinical Connections

Be able to explain:

• Why folic acid (or folate) is most important before conception and in early pregnancy.
• Why iron requirements increase as pregnancy progresses.
• Why adequate protein supports placental and fetal growth.
• How maternal nutrition can influence the child’s lifelong health.
• Why severe maternal undernutrition may result in fetal growth restriction.
• Why excessive weight gain increases the risk of complications.
• Why hydration is especially important during pregnancy.
• Basic food safety measures to reduce the risk of foodborne illness.

Things Worth Memorizing

Protein

Supports:

• placenta
• uterus
• breasts
• maternal blood volume
• fetal growth

Folate

Prevents:

• neural tube defects

Iron

Supports:

• maternal hemoglobin
• fetal iron stores
• increased blood volume

Iodine

Needed for:

• thyroid hormones
• fetal brain development

Choline

Supports:

• brain
• spinal cord
• memory development

DHA

Supports:

• retina
• brain

Questions I Should Answer Without Looking

1. Why do protein requirements increase during pregnancy?
2. Why is folate important before conception?
3. Why is iron supplementation commonly recommended?
4. How does maternal nutrition influence fetal growth?
5. What nutrients are especially important for brain development?
6. What are the consequences of maternal undernutrition?
7. What are the risks of maternal obesity?
8. Why is hydration important during pregnancy?
9. Which foods are commonly avoided because of foodborne illness risk?
10. How can a midwife counsel women on healthy weight gain?

Compendium Entry

This chapter deserves five pages in your Midwifery Compendium.

Page 1 – Nutritional Requirements

• Macronutrients
• Micronutrients
• Calorie needs
• Protein requirements
• Hydration

Page 2 – Vitamins & Minerals

Create a quick-reference chart:

Page 3 – Weight Gain & Maternal Health

Include:

• Healthy weight gain principles
• Effects of obesity
• Effects of undernutrition
• Fetal growth restriction
• Large-for-gestational-age infants

Page 4 – Nutrition Counseling

Topics:

• Balanced diet
• Protein-rich foods
• Hydration
• Fiber for constipation
• Managing nausea while maintaining nutrition
• Food safety (e.g., avoiding unpasteurized dairy, undercooked meats, high-mercury fish)

Page 5 – Fetal Programming

This is one of the most interesting concepts in the chapter.

Include a simple diagram:

Maternal Nutrition

↓

Placental Function

↓

Fetal Growth

↓

Adult Health

Summarize that the intrauterine environment may influence the child’s future risk of metabolic disease, cardiovascular disease, and other long-term health outcomes.

Quick Reference Cards

This chapter naturally lends itself to these cards:

• Pregnancy Nutrition Overview
• Protein Requirements
• Folate
• Iron
• Calcium & Vitamin D
• Iodine
• Choline
• DHA
• Pregnancy Weight Gain
• Food Safety in Pregnancy
• Hydration
• Maternal Obesity
• Fetal Growth Restriction
• Nutrition & Fetal Programming

One study technique I’d especially recommend

If you already have strong convictions about whole-food nutrition, I’d separate established physiology from practice recommendations in your notes.

For example:

Physiology (high-confidence foundational science)

• Iron needs increase because maternal blood volume expands.
• Folate is critical during neural tube formation.
• Protein supports placental and fetal tissue growth.
• The fetus depends entirely on nutrients transferred through the placenta.

Practice Recommendations (which may evolve)

• Specific calorie targets.
• Recommended weight gain ranges.
• Supplement dosages.
• Dietary patterns and meal plans.

This distinction will make your compendium more durable. The physiologic principles change very little over time, while nutritional guidelines are revised periodically as new evidence emerges. As a future midwife, you’ll be able to update recommendations without having to rewrite the underlying science.