Having a Baby After Weight Loss Surgery

Cara Stewart, RD, LDN, member of the Penn Metabolic and Bariatric Surgery team, and Monica A. Mainigi, MD, fertility specialist at Penn Fertility Care, provide important information for women trying to become pregnant and maintain a healthy pregnancy after weight loss surgery.

Many women struggle with fertility as a result of their weight. In fact, obesity puts women at greater risk for ovulation dysfunction and menstrual irregularity, both of which can interfere with fertility. In addition, obesity can lead to an increased risk of miscarriage and decreased success with fertility treatments. For overweight women who are having a hard time conceiving, weight loss surgery may be an option to consider.

For women considering pregnancy after they have had bariatric surgery, it is important to keep the following information in mind.


Fertility boost
Obesity can interfere with hormone production, making it more difficult to get pregnant.  Weight loss after bariatric surgery can lead to regular cycles and ovulation, and improved fertility. In fact, a 2005 study published in the Journal of Clinical Endocrinology and Metabolism found that surgical weight loss for women with PCOS often resolved their reproductive and metabolic abnormalities. 

Healthier pregnancy, healthier baby
After weight loss surgery, medical conditions such as high blood pressure and diabetes are significantly improved or resolved leading to a lowered risk of developing serious complications during pregnancy or delivering a baby born with complications.  Many women are still obese after weight loss surgery which places them at a higher risk for gestational diabetes and preeclampsia, but the risk is far less than before surgery.  Pregnant women who have had bariatric surgery should see a high-risk obstetrician to best manage prenatal care.

Give it time
It is important to wait at least 18 months after surgery to start trying to get pregnant. In the period immediately following gastric bypass or sleeve gastrectomy, rapid weight loss causes stress on the body, including diminished nutrition intake, which can cause complications for an expecting mother and growing baby. Effective contraception is absolutely critical for women pursuing weight loss surgery.  For women with an adjustable gastric band, fluid may be removed from the band during pregnancy to accommodate the need to eat more calories.

Keep supplementing
Good nutrition is especially important for women trying to conceive.  After weight loss surgery, patients are at a higher risk for deficiencies of certain nutrients, including vitamin B12, folic acid, calcium, iron, and vitamin D. It essential to continue taking vitamin and mineral supplements as recommended by the bariatric team.

Be ready for weight gain
After having weight loss surgery, it can be difficult to accept that pregnancy is a time when it is normal, healthy and necessary to gain weight.  Healthy weight gain during pregnancy is important to nourish a growing baby, but work with the program dietitians to avoid unhealthy weight gain during pregnancy.

The Penn Metabolic and Bariatric Surgery Program offers lifelong follow-up care and nutritional support for patients who have had weight loss surgery. Women considering pregnancy after weight loss surgery should discuss their plans with the bariatric surgery team.

For more information on fertility services at Penn Medicine, visit the Penn Fertility Care website.

- Cara Stewart, RD, LDN and Monica Mainigi, MD

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Taking Vitamin and Mineral Supplements: Make time even if you feel fine!

Cara Stewart, RD, LDN, member of the Penn Metabolic and Bariatric Surgery team, outlines the important vitamin and mineral supplements to take after weight loss surgery.

After weight loss surgery, you need to commit to taking a regimen of vitamin and mineral supplements for the rest of your life. Eating smaller amounts of food means your body receives fewer nutrients. In addition, after gastric bypass or sleeve gastrectomy surgery, your system does not absorb some vitamins and minerals as well.

This table highlights the functions of several key nutrients and the symptoms of their deficiency. The damage to your body from many of the deficiencies is permanent, so be sure to follow your dietician’s instructions for taking supplements and have your lab values checked routinely with your primary care physician.

NUTRIENT	WHAT IT DOES	DEFICIENCY
Vitamin B1 (thiamine)	Helps all cells of the body produce energy from carbohydrates	Fatigue, weak muscles, nerve damage
Vitamin B12	Works with folate to make red blood cells Vital part of every cell Helps body use fatty acids and some amino acids	Anemia, fatigue Permanent nerve damage including tingling or numbness in hands and feet
Folate (folic acid)	Plays essential role in making new body cells Works with B12 to form hemoglobin in red blood cells Helps reduce risk of neural tube defects (spina bifida) in developing fetus	Anemia caused by malformed blood cells that won’t carry as much oxygen Increased risk of neural tube defects in developing fetus
Vitamin A	Promotes normal vision, helps eyes see normally in the dark Promotes growth and health of all cells Keeps tissues healthy to prevent infection Works as an antioxidant	Night blindness Dry, scaly skin Reproductive problems
Vitamin D	Promotes absorption of calcium and phosphorus Regulates amount of calcium in blood	Osteoporosis (loss of bone mass) Osteomalacia: softening of bones
Calcium (**NOTE: Supplements are still needed even if blood levels are normal)	Helps bones remain strong by slowing rate of bone loss with age Helps muscles contract and heart beat Promotes normal nerve function	Osteoporosis
Iron	Essential part of hemoglobin that carries oxygen in blood Supports healthy immune system	Iron deficiency anemia Fatigue Infections

- Cara Stewart, RD, LDN

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Recovering from weight loss surgery? Take your vitamins!

Karen Buzby, RD, LDN, member of the Penn Metabolic and Bariatric Surgery team, explains the importance of vitamin and mineral supplements after weight loss surgery.

For optimal health, the body needs 13 essential vitamins and nine trace minerals daily. Typically, the best way to get these nutrients is through a varied diet, as outlined in the USDA Food Guide Pyramid. The dietary restrictions following weight loss surgery make it difficult to obtain the daily recommendations of vitamins and minerals from food alone. Therefore, people recovering from weight loss surgery are strongly encouraged to take vitamin and mineral supplements for proper nourishment and to aid their recovery.

Vitamin and mineral supplements are particularly important during the post-surgical period. Weight loss surgery restricts the amount and type of food that can be consumed. Solid foods are reintroduced into the post-surgical diet slowly and gradually, which means it can be an extended amount of time before patients are able to eat a healthy, nutrient-rich diet.

In addition, gastric bypass can cause malabsorption of important nutrients, making it even more important to compensate with vitamin and mineral supplements. Gastric bypass and sleeve gastrectomy can impair the release and absorption of vitamin B₁₂. By bypassing part of the intestines, gastric bypass can also lead to intolerance of calcium-rich dairy and impaired iron absorption. Taking sufficient supplements can prevent irreversible nutritional deficiencies.

The American Society of Metabolic and Bariatric Surgery provides guidelines for vitamin and mineral supplementation following weight loss surgery.

Multivitamin and mineral supplement:

• The supplement should contain 100 percent of the daily value for at least two thirds of the nutrients listed on the nutrition facts label. The product you select should be reviewed and approved by your bariatric team before surgery.
• Chewable tablets are recommended for the first two to three months after surgery.
• Start taking vitamin and mineral supplements on the first day home from the hospital.
• After adjustable gastric band surgery, one multivitamin a day is typically required.
• After gastric bypass or sleeve gastrectomy, two multivitamins a day are typically required.

Calcium with vitamin D:

• For optimal absorption post surgery, take a product with calcium citrate and vitamin D₃.
• Chewable tablets are recommended for the first two to three months after surgery.
• Calcium intake should be between 1500 and 2000 mg daily.
• Doses should be divided. Take no more than 500 to 600 mg at one time.
• Do not take calcium and iron supplements at the same time. They must be taken at least two hours apart.
• Start taking calcium supplements on the first day home from the hospital.

Vitamin B₁₂:

• A sublingual (under-the-tongue) tablet containing 500 micrograms of vitamin B₁₂ can be taken daily or monthly intramuscular injections of B₁₂ can be given by a primary care physician.

• While the body does store vitamin B₁₂, it is recommended that supplementation begin on the first day home from the hospital.

Iron:

• Additional iron may be needed for menstruating women or those at risk for anemia.
• The amount of additional iron required is determined on an individual basis.
• Do not take iron at the same time as calcium supplements. They must be taken at least two hours apart.

Essential Vitamins:

1. Vitamin A
2. Vitamin D
3. Vitamin E
4. Vitamin K
5. Vitamin C
6. Thiamin
7. Riboflavin
8. Folic acid
9. Niacin
10. Vitamin B₆
11. Vitamin B12
12. Pantothenic acid
13. Biotin

Trace Minerals:

1. Iron
2. Copper
3. Zinc
4. Fluoride
5. Selenium
6. Iodine
7. Manganese
8. Chromium
9. Molybdenum

Make sure to consult your health care team before starting or changing vitamin and mineral supplementation following bariatric surgery.

- Karen Buzby, RD, LDN

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The Right Foods for Keeping Your Hair

Cara Stewart, RD, LDN, member of the Penn Metabolic and Bariatric Surgery team, provides nutrition recommendations for minimizing hair loss.

Hair loss is common after bariatric surgery. It can be caused by stress on your body from surgery, inadequate protein intake or rapid weight loss.

Hair is made of protein, and in the weeks and months following bariatric surgery, patients are often restricted to a liquid diet. Liquid protein supplements can help you compensate for the lack of protein during the post-operative time.

Depriving your body of protein can damage hair roots and weaken hair growth. Once the root is damaged, hair follicles cannot be salvaged. A few months after the lack of protein in your diet, your hair will break off as it grows through the scalp.

The good news is that with an adequate protein intake, your hair will grow back. A minimum of 60 to 80 grams of protein each day is recommended for optimal nutrition. In general, it is best to include a protein with every meal and snack.

Although less common, hair loss can also be caused by a deficiency in nutrients such as zinc, biotin, potassium, vitamin B6, or phosphorus. To prevent nutrient deficiencies, it is important to take the recommended vitamin and mineral supplements and nutrient-rich foods.

By consuming a wide variety of healthy foods, you can maintain your healthy head of hair.

- Cara Stewart, RD, LDN

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