The Best Weight Gain Foods for a 1-Year-Old Baby

Weight gain foods for a 1-year-old baby were exactly what I started searching for when I noticed my daughter wasn’t gaining enough weight.

If your baby is struggling with weight gain, it’s important to know that there are specific foods that can genuinely help.

Unfortunately, weight issues aren’t always caused by poor nutrition — sometimes there’s an underlying health issue involved. 

In this post, I’m sharing how I helped my 1-year-old daughter gain weight, based entirely on advice from her pediatrician — including the tests she asked us to run first to rule out any health issues, the feeding mistakes I didn’t know I was making, and the foods that actually made a difference.

Just a quick note before we dive in: everything I’m sharing here is my own personal journey and what worked for my daughter after visiting her pediatrician. Every baby is different, so please check with your own pediatrician before making any changes to your baby’s diet.

Why Is My 1-Year-Old Baby Underweight?

There are two main reasons why a baby may be underweight: underlying health issues or feeding habits that need adjustment. So how did I figure out which one applies to my baby?

As I mentioned, the pediatrician first recommended running a few tests to rule out any medical concerns. These tests were:

• Stool analysis
• CBC (Complete Blood Count)
• Serum ionized calcium
• Serum vitamin D

These tests helped rule out any underlying health issues — thankfully, everything came back normal.

So that brought us to the second issue: imbalanced feeding habits.

I felt guilty when the doctor said that, but I stopped blaming myself eventually,  because I know I didn’t do it intentionally, and I’m sure you didn’t either.

So let’s go through the mistakes the pediatrician asked me to avoid, and the foods you should start including in your baby’s meals to help them gain weight.

What Nutrition Mistakes to Avoid

There are many mistakes we moms make,  sometimes without even realizing it, that cause nutrition issues and weight gain problems.

I made most of them, and unfortunately, they did affect my daughter’s weight.

1. Feeding With No Schedule

As a first-time mom, I introduced food all the time without any schedule or plan: if you thought this would help your baby gain weight, I’m sorry to say it’s actually a myth.

Offering food all day long without a set plan can cause digestion issues and actually make babies eat worse overall— the exact opposite of what you want.

2. Not Mashing the Food Well Enough

I heard some moms say they make food more solid so babies can get used to eating like adults. 

But this is completely wrong. At this age, babies can’t chew solid food with their still-developing teeth.

As a result, the food doesn’t get digested properly, and the baby doesn’t absorb the nutrients, which can lead to digestion issues — exactly what happened with my daughter.

3. Letting Your Baby Eat Alone

I used to let her eat alone so I could get things done. But she clearly wanted company and didn’t eat well on her own. 

I know we can’t always sit with them, but try to share at least 2 meals a day together, with you or your partner. It really works.

4. Introducing Too Much Junk Food

I wasn’t introducing a lot of unhealthy food in general, but I was giving my daughter french fries too often because she loves them. 

The pediatrician said to limit it to once every 10 days, not every day.

5. Giving Yogurt at Breakfast

I know this one sounds strange, and honestly, I wasn’t 100% convinced either,

But I followed the pediatrician’s lead because my goal was to help my daughter gain weight. 

The doctor explained that yogurt is quite filling and can suppress a baby’s appetite for most of the day. 

So she suggested moving it to dinner instead of breakfast.

6. Letting Your Baby Sleep More Than 4 Hours Without Eating

If you’re one of those lucky moms whose baby sleeps for long stretches at night, you might not be so lucky if your baby is underweight. 

You need to feed them every 4 hours maximum, even at night, to help them gain weight and maintain a healthy appetite.

7. Not Paying Attention to How Your Baby Sits While Eating

Another thing to keep in mind is making sure your baby feels comfortable and well-supported while sitting.

Feeding specialists recommend using an adjustable high chair to support the hips, knees, and ankles for better focus.

When a baby is properly supported, they can focus on chewing and swallowing instead of trying to stay balanced.

A high chair with an adjustable footrest makes a real difference here. 

There are many good non-toxic high chairs like Momcozy DinerPal High Chair and it’s been great. 

The adjustable footrest supports exactly that posture, and it’s easy to clean too, which matters when you’re introducing new foods every week.

I also put together a list of 15 non-toxic high chairs, you can check it out here — all of them are safe options.

After recognizing the mistakes I made, what should I have done next?

The Best Foods to Help Your Baby Gain Weight

If you think that just eating healthy is enough to help your baby gain weight, you might want to reconsider. 

The #1 thing for weight gain, as the pediatrician told me,  is high-calorie healthy food. Here’s the list she gave me:

Weight Gain Foods for 1-Year-Old Babies

Olive Oil

This is one of the best and healthiest high-calorie foods to introduce to your little one, not just for cooking, but you can also add it to juices (I’ll show you how later).

Just one teaspoon of olive oil contains about 40 calories, which is high and healthy at the same time.

Avocado

Avocado is a healthy fat-rich food that’s also high in calories, which helps with weight gain — not just for babies, but for adults too.

Its creamy texture makes it easy to mash and serve, and babies tend to love it.

Vitamin C-Rich Fruits

Did you know that vitamin C is very important for babies who have anemia?

Babies with low CBC (iron deficiency) need to include iron-rich foods in their daily meals, but iron alone isn’t enough.

Vitamin C is what helps the body actually absorb the iron. For example, if you’re introducing chicken or beef liver to your little one, add a squeeze of lemon juice to it. 

This helps the body absorb iron much more effectively and can help raise CBC levels.

The best vitamin C-rich fruits to introduce:

• Guava
• Orange
• Strawberries
• Kiwi

Red Bell Pepper & Carrot (Vitamin A)

Vitamin A is essential for babies’ health and development. Red bell peppers and carrots are among the best sources.

The pediatrician asked me to include them in my baby’s daily meals,  just make sure the carrot is cooked well, so it’s soft enough to eat.

Nutritional Yeast

This is the secret ingredient behind boosting babies’ weight, but make sure you’re using nutritional yeast, not baking yeast. They’re completely different.

How I serve it: mix one teaspoon into half a cup of milk, with a small teaspoon of honey.

Eggs

Eggs are a complete source of protein and healthy fat. They’re easy to prepare in many ways — scrambled, boiled and mashed, or mixed into purees. Make them a daily staple.

Yogurt — Best Given at Night

As I mentioned in the mistakes section, I was introducing yogurt at breakfast and it was making my baby feel full and lose her appetite for the rest of the day (at least that’s what the pediatrician said — I’m still not 100% convinced, but it worked!).

So I moved yogurt to dinner instead, and it made a difference.

Pumpkin

Pumpkin is incredibly valuable for babies. It has high levels of beta-carotene (Vitamin A) for eye health, fiber for digestion, and immune-boosting Vitamin C.

It can be mixed with fruits like bananas or apples, or served with yogurt at dinner. Try a few combinations and see which one your baby prefers.

Nutritional Drinks

Here are some nutritious drinks the pediatrician recommended for my daughter that can also help with weight gain:

• Strawberry + beetroot juice
• Avocado juice
• Banana milk
• Blended dates with milk + one teaspoon of honey + one teaspoon of olive oil (great as a morning snack)

Honey is safe to introduce after 12 months. Never give honey to babies under 1 year. Source: CDC – Infant Botulism, 2023.

Feeding Schedule

This is the most important part of helping babies gain weight. You need to follow a scheduled meal plan and avoid the mistakes I mentioned above,  if you want to see progress as quickly as possible.

And don’t be overwhelmed, the schedule is actually very simple:

• Alternate between milk and solid meals every 4 hours to build a real appetite
• Always offer blended or mashed foods
• Serve juices, fruit, and vegetables as snacks between meals

If you are a busy mom and have no time to prepare meals, you can use Momcozy AutoMeal Baby Food Maker.

It steams and blends in one device, so you can batch-prep purees at the beginning of the week and have everything ready to go.

When meals are prepared ahead of time, you’re much more likely to actually follow through with the schedule, especially on the harder days.

Tracking Your Baby’s Progress

After applying this plan, I was checking my baby’s weight and height regularly using a baby scale to make sure that there was progress (the pediatrician asked to use the scale once monthly ), but I was too worried to just use it every week!

There are some good options for scales to monitor your baby’s weight, like Momcozy Multi-Function Baby Scale – Weight & Height Measurement. The best thing about it is that it measures both weight and height.

Pro tip: The pediatrician advised me to always weigh my baby on the same scale. Different scales can give slightly different readings, so using one consistently ensures you’re tracking real progress. If you don’t plan to buy a scale at home, make sure you always weigh at the same clinic or hospital.

CONCLUSION

Helping your baby gain weight can feel overwhelming at first, but I promise it gets easier once you have a clear plan to follow.

To sum it all up: start by ruling out any health issues with your pediatrician before assuming it’s a nutrition problem. 

Then, eliminate the feeding mistakes — especially the no-schedule grazing and the poorly mashed food, because those two alone made the biggest difference for us. 

Introduce the high-calorie healthy foods I mentioned, follow the 4-hour alternating schedule, and make sure your baby is comfortable and well-supported while eating.

And please —  don’t be too hard on yourself. None of us were doing this intentionally. 

We’re all learning as we go, and the fact that you’re here reading this means you’re already doing the right thing.

Frequently Asked Questions (FAQs)

What are the best foods for a 1-year-old to gain weight?

The best weight gain foods for a 1-year-old are calorie-dense AND nutritious — not just filling. From everything the pediatrician shared with me, the top picks are avocado, olive oil, eggs, nutritional yeast, and pumpkin.

These are the exact foods I introduced to my daughter, and they made a real difference.

Pair them with vitamin C-rich fruits like guava, orange, strawberries, and kiwi to help with iron absorption, and don’t forget the nutritional drinks — especially the blended dates with milk and olive oil as a morning snack.

What should I feed my 1-year-old to gain weight — and how often?

What you feed matters, but when you feed matters just as much. The schedule that worked for us was alternating milk feeding and solid meals every 4 hours, with juices, fruit, and soft vegetables as snacks in between.

As for what to give — focus on healthy high-calorie foods like avocado, eggs, olive oil, and pumpkin. Always offer them blended or well-mashed, because poorly digested food means your baby isn’t actually absorbing the nutrients, even if they’re eating enough.

Should my baby gain weight every day?

Not necessarily — and that’s completely normal. Babies don’t gain weight in a perfectly straight line. 

What matters is the overall upward trend over weeks, not day-to-day fluctuations. 

The pediatrician recommended weighing my daughter once a month, but since she was underweight, I checked weekly at home.

 The important thing is to always use the same scale so you’re comparing accurate numbers, and to look at the bigger picture rather than panicking over a day or two with no change.