How to Increase Fetal Weight During Pregnancy?

How to Increase Fetal Weight During Pregnancy?

Medically Reviewed By
Trishita Nalvath (Diabetologist/Nutritionist/Dietitian)
View more Diabetologist/Nutritionist/Dietitian Our Panel of Experts

Once you find out that you are pregnant, it is important to pay heed to your diet, exercise, and lifestyle for the optimal growth and development of your unborn baby. Every mother-to-be wishes to have a healthy baby, and one of the parameters that help you know about your little one’s well-being is the fetal weight, which is assessed during the prenatal scan. Optimal fetal weight gain is an essential part of fetal development. Therefore, it is important to monitor the same. Let’s take a look at ideal fetal weight by the week and how to increase fetal weight during pregnancy.

Video: How to Increase Fetal Weight During Pregnancy?

How Is Foetus Weight Measurement Done?

A pregnant woman going through an ultrasound procedure with her husband

Most pregnant women will have their first ultrasound scan in the first trimester. Your radiologist will take various measurements to understand the foetal growth and development. Following are some measurements that your radiologist will make:

  • FL or Femur length
  • HC or Head circumference
  • AC or Abdominal circumference
  • OFD or Occipitofrontal diameter
  • BPD or Biparietal diameter
  • HL or Humerus length

With the above-mentioned parameters, your radiologist will establish the foetal weight and gestational age. You will also be told about your EDD or estimated date of delivery. The measurements made by the doctor may not be exact, but it will help your doctor establish the overall well-being of the foetus.

Also Read: Foetal Anaemia – Causes, Diagnosis, and Treatment

Is It Important to Know Your Fetal Weight?

Yes. It is important to know about accurate fetal weight estimation as it is used to make decisions about the mode of delivery and the timing of labour induction.

Thus, regularly checking fetal growth is important to keep a check on the nutritional needs of both the mother and the baby. A mother on a nutritious and healthy diet can ensure a healthy delivery without complications.

What Is the Ideal Weight of a Foetus?

Every baby grows differently; therefore, the table below is only to give you an idea, and not the ideal baby weight gain, week by week during pregnancy.

Pregnancy in Weeks Foetal Weight in Grams
8 1
9 2
10 4
11 7
12 14
13 23
14 43
15 70
16 100
17 140
18 190
19 240
20 300
21 360
22 430
23 501
24 600
25 660
26 760
27 875
28 1005
29 1153
30 1319
31 1502
32 1702
33 1918
34 2146
35 2383
36 2622
37 2859
38 3083
39 3288
40 3462
41 3597
42 3685

Effective Tips to Increase Foetal Weight During Pregnancy

As a mommy-to-be you may wonder how to make your unborn baby gain weight, Follow some of these tips to increase foetal weight during pregnancy:

1. A Healthy and Balanced Diet

Diet plays the most important role in pregnancy. You should include fresh fruits, vegetables, whole grains, meat, and poultry in your diet if you wish to increase foetal weight.

2. Include Nuts and Dry Fruits in Your Diet

A well-balanced diet also constitutes nuts and dry fruits. You may eat almonds, apricots, figs, walnuts, and other nuts and dry fruits. However, it is recommended not to go overboard with them.

3. Prenatal Vitamins

You will be given prenatal vitamins for your baby’s proper growth and development. These vitamins also help your baby gain weight. You should take these vitamins regularly for optimal foetal weight gain during pregnancy.

4. Stay Hydrated

Drink adequate amounts of fluids to avoid any kind of dehydration in pregnancy. Dehydration in pregnancy may lead to some serious medical complications. You may take fruit juices, vegetable juices, milk, buttermilk or water to keep your body well-hydrated.

5. Take Adequate Rest

It is very important for a pregnant woman to have plenty of rest. Over-exertion or unnecessary pressure may affect foetal development and growth. Try and get a minimum eight hours of uninterrupted sleep to keep your energy levels intact.

6. Stay Calm and Positive

It is not only important to take care of your physical health, but also mental wellbeing. Any kind of stress and anxiety can affect you as well as your unborn baby’s health. The resulting emotional outbursts may lead to over-eating, under-eating, or making wrong food choices, and all these may affect foetal health.

7. Medical Guidance

Your doctor will guide you in case your baby is not gaining a sufficient amount of weight. You may be told to take additional supplements or make dietary changes to increase foetal weight.

The above-mentioned tips may help your baby gain weight during pregnancy. However, it is recommended to take your doctor’s advice in this matter.

What Can You Eat to Increase Baby Weight During Pregnancy?

A happy pregnant woman eating a healthy meal

Confused about how to increase baby weight in womb? You may include the following foods to help the foetus gain weight during pregnancy:

1. Sweet Potatoes

Sweet potatoes are loaded with fibre, potassium, Vitamin CVitamin B6, iron, copper, and beta-carotene. The presence of beta-carotene (an antioxidant) in sweet potatoes gets converted into Vitamin A by your body. Vitamin A, as we know, is essential for foetal skin, bones, and eyes. Sweet potatoes increase the iron levels in the body. You may eat them in mashed, baked, stewed, or shallow-fried form.

2. Lentils and Beans

Lentils and beans are jam-packed with iron and protein. You will also get enough fibre, folate and calcium by including beans and lentils in your diet. If you are a vegetarian, beans will provide you with minerals that you may otherwise get from a non-vegetarian diet (meat and poultry). Being rich in zinc, beans are great for reducing the risk of prolonged labour, low birth weight babies, or premature deliveries.

3. Orange Juice

Start your day with a glass of fresh orange juice and spike up your Vitamin C, potassium and folate levels. Folate and folic acid are extremely important in pregnancy. By meeting your body’s daily requirements of these nutrients, you can reduce the baby’s chances of catching certain birth defects. Orange juice helps in keeping your overall health, metabolism, and muscle functions in place.

4. Yoghurt

Calcium, protein, Vitamin B, zinc and other bone-building nutrients are power-packed in yoghurt. As a mommy-to-be, your daily calcium requirement is 1000 mg, and you can meet this requirement with yoghurt. Apart from keeping your bone and teeth health in place, adequate amounts of calcium in the body reduce the chances of preterm labour or low birth weight babies.

5. Green Leafy Vegetables

Green vegetables such as spinach, kale, broccoli, and asparagus are loaded with essential nutrients and anti-oxidants. Green leafy vegetables work wonders for a pregnant woman and her developing foetus. You may get your daily dosage of calcium, potassium, Vitamin A, folate, and fibre by eating leafy vegetables. You may eat them in raw, cooked, baked, or stir-fried form for maximum benefits.

6. Salmon

Salmon is one of the best sources of omega-3 fatty acids and protein. Omega-3 fatty acids are very beneficial for a growing foetus as they help in brain and eye development, as well as supplying the required amount of protein to mothers. Salmon is considered safe for pregnant women, as it has very low levels of mercury in it.

7. Eggs

Egg are a powerhouse of protein, Vitamin A, and Vitamin D, all of which are incredible for the growth and development on the foetus. In fact, the protein profile of eggs is unmatched by any other food, making it beneficial to eat during pregnancy. Eggs are also rich in folic acids and iron, which work towards strengthening amniotic membranes and preventing birth defects and low birth weight in the foetus.

8. Milk

A daily intake of 200-500 ml of milk per day can help pregnant women increase foetal weight. Milk contains a high amount of protein and calcium, which are essential for the growth and development of the foetus. You can drink milk in plain form or come up with interesting porridge and smoothie recipes.

9. Chicken

Chicken is a great food that helps increase foetal weight. This lean meat is high in proteins that promote cell and muscle development in the body. Besides proteins, chicken also has a high amount of iron that reduces anaemia in the mother and fetus.

10. Soybean

Soybean is a rich source of protein for vegetarians and can be consumed in various forms. High in iron as well, soybean prevents anaemia due to its high iron content. You can consume soya in the form of soy milk, soya nuggets, tofu, etc.

11. Avocado

Avocados are rich in fibre and vitamins C and E. Plus and are also an excellent source of healthy fats. Avocado is a crucial baby weight gain food which also helps them stay warm after birth.

12. Peas

Peas are packed with iron and proteins; therefore, they must be included in the pregnancy diet in both fresh and dried forms. This vegetable is highly beneficial for vegetarians and provides almost all the nutrients present in meat and fish. Peas are also rich in zinc and thus come under the foods to increase fetal weight during pregnancy.

13. Pumpkin

Pumpkins are a great source of essential vitamins, like vitamin A, vitamin B-6, and vitamin C and are highly nutritious. Pumpkin is also rich in iron, calcium, and zinc and loaded with protein, omega-3, and carbohydrates. Therefore, you must include it in your diet to increase fetal weight.

14. Nuts

Nuts like walnuts, almonds, hazelnuts, and peanuts offer numerous health benefits. These nuts are also rich in micronutrients like zinc, iron, and copper. All these benefits make them an ideal food to increase fetal weight during pregnancy.

15. Broccoli

Broccoli is an excellent source of iron, beta carotene, vitamin C, vitamin E, vitamin A, vitamin K, and potassium. Therefore, including this vegetable in the pregnancy diet can help to increase fetal weight. However, keep in mind that patients with hypothyroidism should avoid eating broccoli.

16. Oatmeal

Oatmeal is a great source of carbs, selenium, vitamin B, phosphorous and calcium. So, you can make it a part of your pregnancy diet to increase fetal weight.

17. Fruits

Fruits like bananas, kiwis, melons and strawberries can help you cover your daily vitamin C requirement. Vitamin C is necessary to ensure that your baby’s placenta continues to function properly. Additionally, it helps your baby absorb the iron from the food you consume, which is required to maintain a healthy immune system.

Precautions to Take While Trying to Increase Your Baby’s Weight in the Womb

Some dietary choices may help you increase your baby’s weight in the womb. However, it is very important that you do so in a healthier manner. Overdoing anything may lead to complications. These are some precautions that you should take:

1. Avoid Alcohol and Smoking

You should strictly avoid alcohol consumption and smoking in pregnancy. Both these habits can prove to be fatal for your developing baby and may also lead to serious medical complications.

2. Reduce Caffeine Intake

Consuming high amounts of coffee, tea or aerated beverages can have a negative impact on foetal health.

3. Avoid Fried, Sugary or Fatty Foods

Regular intake of such food items may make you prone to obesity, which in turn increase the chances of cholesterol and hypertension. It is recommended to go easy on oily, fatty, and sugary food items. Staying away from certain food categories will help you have a healthy pregnancy and also be beneficial for your unborn child.


1. In Which Month Does Fetal Weight Increase?

By 31 weeks, or 29 weeks after conception, your baby has finished most of their major development, and now it’s time for them to gain weight.

2. How Much Weight Does Your Fetal Gain Per Day?

A fetal gains about 8 to 12 ounces (226 to 340 grams) each week. During this time, the fat is being deposited all over your little one’s body, especially around the shoulders.

Making healthy food choices during pregnancy is key to ensuring your baby’s growth and development is on track. We have made some suggestions in context to dietary changes that you can make during pregnancy to increase foetal weight. However, consult your doctor before making any changes or amends to your diet. With expert guidance and support, you will not only have a healthy pregnancy, but also a healthy baby.


1. Jan-Simon Lanowski, Gabriele Lanowski, Cordula Schippert,; Ultrasound versus Clinical Examination to Estimate Fetal Weight at Term; National Library of Medicine; March 2017

2. Pregnancy diet: Focus on these essential nutrients;;

3. Pregnancy: Nutrition;;

4. Bodo C Melnik, Swen Malte John, Gerd Schmitz; Milk consumption during pregnancy increases birth weight, a risk factor for the development of diseases of civilization;;; January 2015

5. Healthy eating and weight gain during pregnancy;;

Also Read:

Baby Size — Week by Week Comparison with Fruits and Veggies
Foetal Development: Growth in First, Second and Third Trimester

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