Pregnancy is a time of profound change, not just for your body, but for your dietary habits as well. It is completely normal to experience intense cravings, ranging from pickles to ice cream. However, many expectant mothers find themselves craving fresh, juicy fruits.
Watermelon, with its refreshing taste and high water content, is a particularly common craving, especially during the warmer months or when morning sickness strikes. But as with many foods during pregnancy, you may pause and wonder: Is it safe?
Navigating the sea of nutritional advice can be overwhelming. You want to ensure that everything you consume benefits both you and your developing baby. The good news is that watermelon is generally considered safe and highly beneficial for most pregnant women.
This article explores the safety profile of eating watermelon during pregnancy, breaks down its impressive nutritional benefits, and offers practical tips for including it in your diet safely.
Overview: Is Watermelon Safe During Pregnancy?
For the vast majority of pregnant women, eating watermelon is not only safe but encouraged. It is packed with essential vitamins, minerals, and antioxidants that support maternal health and foetal development.
According to NHS guidelines on a healthy diet in pregnancy, fruit and vegetables should make up a significant portion of your daily intake. Watermelon is an excellent choice because it is nutrient-dense without being calorie-heavy.
However, moderation is key. While the fruit is packed with goodness, it does contain natural sugars. If you have been diagnosed with gestational diabetes or have specific dietary restrictions, you should consult your General Practitioner (GP) or midwife before significantly increasing your intake.
Generally, the risks associated with watermelon are minimal compared to its vast benefits. It provides a sweet, hydrating alternative to processed sugary snacks, helping you manage cravings while nourishing your body.
Symptoms and Causes: Why Do You Crave It?
Cravings are a hallmark of pregnancy, often driven by hormonal fluctuations and the body’s increased demand for nutrients. If you find yourself reaching for watermelon constantly, your body might be signaling a specific need.
The Need for Hydration
During pregnancy, your blood volume increases by up to 50% to support the placenta and the baby. This creates a massive demand for fluids. Dehydration can lead to fatigue, headaches, and even preterm contractions.
Watermelon is approximately 92% water. Craving it may be your body’s intuitive way of preventing dehydration. The British Nutrition Foundation highlights the importance of hydration, noting that fluid needs increase significantly during pregnancy and breastfeeding.
Low Blood Sugar Levels
The natural sugars in watermelon provide a quick energy boost. If you are experiencing dips in blood sugar, which can happen frequently as your metabolism shifts, the sweetness of watermelon can offer immediate relief without the crash associated with refined sugars.
Easing Morning Sickness
The cold, crisp texture and mild flavour of watermelon are often well-tolerated by women suffering from nausea. Unlike heavy or greasy foods, watermelon is light on the stomach and can help settle digestive unease.

Diagnosis and Treatment: Nutritional Breakdown and Benefits
Watermelon is more than just flavoured water. It is a nutritional powerhouse. Here is a detailed look at how specific nutrients in this fruit support a healthy pregnancy.
1. Combating Heartburn and Acidity
Heartburn is a common complaint in later pregnancy as the growing uterus puts pressure on the stomach. Watermelon is alkaline, which helps neutralise stomach acid. For many women, eating a few cubes of watermelon can provide soothing relief similar to mild antacids. Tommy’s, the pregnancy charity, suggests that eating small, frequent meals can help manage heartburn, and watermelon is a perfect snack for this.
2. Reducing Swelling (Oedema)
Swelling in the hands and feet, known as oedema, is caused by the accumulation of fluids in the tissues. While it seems counterintuitive, staying hydrated helps reduce water retention.
Furthermore, watermelon is a good source of potassium. Potassium is an electrolyte that helps balance fluid levels in the body. By optimising your potassium intake, you can help your kidneys flush out waste and excess fluid more efficiently.
3. Vital Vitamins for Foetal Development
Watermelon is rich in vitamins that are crucial for your baby’s growth:
- Vitamin A: Essential for the development of your baby’s vision and immune system.
- Vitamin C: Vital for collagen formation, which builds your baby’s skin, bones, and cartilage. It also boosts your own immune system.
- Vitamin B6: Known to help alleviate nausea and is important for the baby’s brain development.
4. Lycopene and Pre-eclampsia Risk
Watermelon is one of the richest natural sources of lycopene, the antioxidant that gives the fruit its red colour. Some research suggests that antioxidants may help lower the risk of pre-eclampsia, a serious condition characterised by high blood pressure.
According to a relevant article on Healthline regarding lycopene, this antioxidant supports heart health and reduces oxidative stress. While more research is specifically needed on lycopene and pregnancy outcomes, the cardiovascular benefits are well-documented.
5. Preventing Muscle Cramps
Leg cramps are a painful reality for many usually occurring at night during the second and third trimesters. These can be caused by a deficiency in magnesium or potassium. Watermelon contains both minerals, potentially helping to relax muscles and prevent cramping.
6. Dietary Fibre and Digestion
Constipation is another common symptom of pregnancy due to rising progesterone levels relaxing the bowel muscles. While watermelon is not as high in fibre as whole grains, the combination of its fibre content and high water volume promotes regular bowel movements.
Nutritional Data Profile
To understand exactly what you are consuming, here is a breakdown of the nutrients found in a standard serving of fresh watermelon.
| Nutrient | Amount per 100g | Benefit for Pregnancy |
|---|---|---|
| Water | 91.45g | Essential for amniotic fluid and blood volume. |
| Calories | 30 kcal | Low energy density prevents excessive weight gain. |
| Carbohydrates | 7.6g | Provides immediate energy. |
| Sugar | 6.2g | Natural sweetness to curb cravings. |
| Fibre | 0.4g | Aids mild digestion support. |
| Vitamin C | 8.1mg | Supports immunity and collagen production. |
| Vitamin A | 28mcg | Critical for foetal eye development. |
| Potassium | 112mg | Helps regulate blood pressure and fluid balance. |
| Magnesium | 10mg | Assists in muscle function and cramp prevention. |
Tips for Management and Safety
While watermelon is beneficial, how you consume it matters. Food safety is paramount during pregnancy to avoid infections like Listeriosis or Toxoplasmosis.
Hygiene and Preparation
Always wash the rind of the watermelon thoroughly before cutting it. Bacteria from the soil can reside on the outer skin and be transferred to the flesh by the knife. The Food Standards Agency emphasises washing all fruit and vegetables to remove harmful bacteria and soil.
- Buy Whole: Pre-cut fruit carries a higher risk of contamination (Salmonella or Listeria) because it has been handled more and has more surface area exposed. It is safer to buy a whole melon and cut it yourself at home.
- Storage: Once cut, store watermelon in the fridge in an airtight container. Do not leave it at room temperature for more than two hours.
Managing Blood Sugar (Gestational Diabetes)
Watermelon has a high Glycaemic Index (GI), meaning it can raise blood sugar levels quickly. However, its Glycaemic Load (GL) is low because it is mostly water.
If you are managing gestational diabetes, you do not necessarily have to avoid it, but portion control is vital. Pair watermelon with a source of protein or healthy fat, such as a handful of nuts or a slice of cheese, to slow down sugar absorption. Diabetes UK offers excellent advice on managing fruit portions within a balanced diet.
Creative Ways to Include Watermelon
- Smoothies: Blend with Greek yoghurt and mint for a protein-rich drink.
- Salads: Toss cubes with feta cheese, cucumber, and lime juice for a savoury snack.
- Ice Lollies: Puree the flesh and freeze in moulds for a soothing treat against morning sickness.
Frequently Asked Questions
Can I eat watermelon seeds while pregnant?
Yes, the seeds are safe. In fact, roasted watermelon seeds are packed with protein, magnesium, and iron. However, the white seeds in standard melons are soft and easily digested. If you accidentally swallow black seeds, they will simply pass through your system harmlessly.
Is it safe to drink watermelon juice?
Pasteurised watermelon juice is safe. However, avoid “fresh-squeezed” juices from market stalls or juice bars unless you are certain of the hygiene standards, as unpasteurised juices can harbour bacteria. It is always better to eat the whole fruit to get the fibre.
Can watermelon cause cold symptoms?
There is a myth in some cultures that eating “cooling” foods like watermelon can cause a cold or cough in the baby. There is no scientific evidence to support this. Colds are caused by viruses, not fruit. However, if you are prone to acid reflux, eating it very late at night might cause discomfort due to the liquid volume.
Does watermelon help with labour induction?
There is no scientific evidence that eating watermelon induces labour. While it is great for hydration during the early stages of labour, it will not trigger contractions.
The Bottom Line
Eating watermelon during pregnancy is a delicious way to stay hydrated and nourish your body with essential vitamins and minerals. Its high water content supports the increase in blood volume and amniotic fluid, while its potassium levels may help mitigate annoying symptoms like leg cramps and swelling.
Provided you wash the fruit thoroughly to ensure food safety and consume it in moderation—particularly if you are monitoring your blood sugar—it is an excellent addition to your prenatal diet.
Always listen to your body. If you have concerns about your diet or specific symptoms, consult your midwife or GP. For more detailed guidance on supplements and nutrition, resources from the Royal College of Obstetricians and Gynaecologists are invaluable.
Enjoy your pregnancy and that refreshing slice of melon!
