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Pregnancy with WLS?

Weight Loss surgery is well known to help fertility in patients since it improves PCO, restores ovulation, and regulates the menstrual cycle. The surgery does not force the patient to have a c-section or to be high risk, risk depends if their BMI is more than 30.


If you are thinking about pregnancy or are pregnant, then here are some things you need to focus on:

  1. BMI before the pregnancy

  2. Increase of weight during pregnancy

  3. Level of physical activity


General Recommendations:

  • Have monthly consultation with your doctor

  • Begin taking supplements 3-6 months before trying to get pregnant (Multi-vitamin and minerals)

  • Have monthly checkups post-partum and during lactancy

  • Wait at least 12-18 months after surgery to get pregnant


Recommended Daily Nutrition Plan:

  • Total daily calories 1800

  • third trimester 300 extra calories

  • If there is more than one baby you add 450 calories after the second trimester + 15-20g of protein per baby.

  • 100-150g daily of fruits, vegetables and grains

  • 30-35 g daily of Fats mono and polyunsaturated (this help fetus neurological development)

  • 60g of daily protein

  • 5-6 meals a day (portion 180-200 g)

  • 1800-2000 ml water per day

Recommended Supplements

  1. Prenatal vitamins - 1 daily

  2. Calcium citrate 1000-1200 mg daily

  3. Vitamin D- 2000-6000 UI

  4. Ferrous sulphate 40-65 mg

  5. Vitamin B12- 350-500 ug

  6. Folic acid- 4mg

  7. Zinc- 15mg

  8. Fiber 20-25g

  9. Omega-3 1000-2000mg


Recommended weight regain:

  • BMI < 18.5 = 12.5-18 KG - 27.5-19.6 LBS

  • BMI 18.5 - 24.9 = 11.5-16 KG - 25.3-35.2 LBS

  • BMI 15-29.9 = 7-11.5KG- 15.4-25.3 LBS

  • BMI > 30 = 5-9 KG - 11-19.8LBS


The insufficient gain of weight improves the risk of Small Gestational Age & congenital anomalies.



This article was written in collaboration with nutritionist Andrea Solorzano.

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