Pregnancy Weight Gain Calculator

Do most pregnant women gain the recommended amount of weight?

During pregnancy, normal weight gaining is crucial for proper development of the baby. You should remember that a healthy diet is an important part of lifestyle at any time, but it is especially vital if you’re pregnant or planning a pregnancy.
But what does we mean by a healthy diet? Many mamas-to-be wonder what they should eat and what is a diet for a pregnant women?

The most important thing to remember is that you don’t need to go on any special diet! However, it’s important to eat different foods every day to get all the necessary nutrients that you and your baby may need. Remember that it’s best to get the vitamins from the food, not the dietary supplements. However, the supplementation of folic acid is also necessary.

Women during the pregnancy are usually hungrier than usually so they can and should eat more, but you don’t need to eat for two. Don’t count calories in pregnancy! Eat plenty of fruit and vegetables because these provide vitamins and minerals, as well as fiber, which helps digestion and can help prevent constipation — which often happens in pregnant women. Avoid snacking on foods that are high in fat and sugar. Avoid alcohol and cigarettes. Eat protein foods, such as meat, fish, eggs every day. However, avoid raw meat, as it may be a source of infection.

Prepare your meals safely:

  • wash fruits, vegetables, and your hands,
  • use a separate knife and chopping board for raw meats,
  • store raw foods separately from ready-to-eat foods.

Remember also about other healthy habits: have some regular physical activity (if everything during pregnancy is fine), sleep long enough, drink plenty of water, and don’t smoke!

Pre-pregnancy BMI Category Recommended Weight Gain
{amp}lt; 18.5 Underweight 28-40lb (13-18kg)
18.5 – 24.9 Normal 24-35lb (11-16kg)
25-29.9 Overweight 15-25lb (7-11kg)
{amp}gt; 30 Obese 11-20lb (5-9kg)

If you are carrying twins, you need to gain weight accordingly. Here is the general pregnancy weight gain chart for twins.

Pre-pregnancy BMI Category Recommended Weight Gain
18.5-24.9 Normal 28-40lb (13-18kg)
18.5 – 24.9 Normal 37-54lb (17-25kg)
25-29.9 Overweight 31-50lb (14-23kg)
{amp}gt; 30 Obese 25-42lb (11-19kg)

If you are carrying multiples or more, there are no set guidelines for pregnancy weight gain due to insufficient data. You should talk to your OB/GYN on how to gain the right weight.

When Do You Start Gaining Weight During Pregnancy ?

You will start to gain weight during the first trimester (due to retained water), but that is minimal. In the first month of pregnancy, there is little or no weight gain as the baby is just a tiny ball of cells.

During the second trimester, you will have the highest weight gain since your eating habits influence the baby’s weight. You will put around 0.5kg every week, totaling 5.5 to 6.4kg in that trimester. There will again be a considerable increase in weight during the third trimester, and it may slow down in the last month (due to food aversions or having an active baby).

You can use our pregnancy weight gain calculator to find out how much you should gain (based on your height and pre-pregnancy weight) and whether you are in your target weight range.

Or you can check the chart below. To find your target weight gain, you’ll need to know your pre-pregnancy body mass index (BMI). Calculate your BMI here.

These guidelines for pregnancy weight gain were issued by The National Academies of Sciences, Engineering, and Medicine in 2009 and are the most current available.

Your pre-pregnancy BMI Your target weight gain if you’re carrying one child Your target weight gain if you’re carrying twins
Less than 18.5 28 to 40 pounds no recommendation
18.5 to 24.9 25 to 35 pounds 37 to 54 pounds
25 to 29.9 15 to 25 pounds 31 to 50 pounds
30 or higher 11 to 20 pounds 25 to 42 pounds

If you’re starting pregnancy at a healthy weight, expect to gain 1 to 5 pounds in the first trimester and about 1 pound per week for the rest of your pregnancy.

Keep in mind that eating for two doesn’t mean eating twice as much as you usually do – you don’t even need any extra calories in your first trimester. In your second trimester, experts recommend getting about 340 extra calories a day and 450 extra calories daily in the third trimester.

If you need help managing your weight, ask your healthcare provider to recommend a healthy diet and exercise program that’s right for you.

Gaining more than recommended during pregnancy puts you at a higher risk for high blood pressure disorders, including gestational hypertension (high blood pressure that starts during pregnancy) and preeclampsia (sometimes called toxemia). These conditions may result in a preterm delivery.

And unless you start out underweight, gaining too much pregnancy weight also increases your risk of:

Gaining too little weight during pregnancy, especially if you start out underweight, can mean a higher risk of delivering a low-birth-weight baby (less than 5.5 pounds). This can cause a variety of problems for the baby, including feeding difficulty and low blood sugar. A low-birth-weight baby may also need to stay in the hospital for an extended period of time.

However, for women who begin pregnancy more than 50 pounds overweight, gaining little or no weight can lower the risk of pregnancy complications, such as hypertension, preeclampsia, and large infants.

If you’re overweight, talk your doctor (ideally before you become pregnant) about ways to minimize your risks, especially if you have a medical condition related to obesity, such as hypertension or diabetes.

According to Kathleen Rasmussen, lead author of the committee that issued the 2009 National Academies report, about half of pregnant women gain the recommended amount of weight. But most women who start out overweight or obese gain more than the guidelines recommend.

How much to gain during pregnancy depends on your BMI:

  • If your BMI is 25 to 29.9: It’s recommended that you gain between 15 and 25 pounds by the end of your pregnancy, or approximately 2 to 3 pounds per month in your second and third trimesters.
  • If your BMI is 30 or higher: You’re advised to gain only 11 to 20 pounds during pregnancy.

A study published in 2010 in the journal Obstetrics {amp}amp; Gynecology found that pregnant women who gained more than the recommended weight were 50 percent more likely to develop gestational diabetes than moms-to-be whose weight stayed within recommended limits.

For guidance, try our pregnancy weight gain calculator and learn more about pregnancy weight gain.

Pregnancy is definitely not the time to go on a weight-loss diet: Restricting your food intake is potentially hazardous to you and your developing baby. But many plus-size women do lose weight during pregnancy without dieting.

In the first trimester, it’s common to lose weight as the result of morning sickness: The nausea can diminish your appetite, and the vomiting can cause you to miss out on calories. But even so, your baby will get all the necessary calories.

Overweight women have an extra reserve of calories in stored fat, so as your baby grows, it’s not harmful to maintain or even lose a little weight at first. What’s not okay is losing weight because you’re intentionally cutting calories (and, as a result, limiting nutrients).

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