Many people worry after cutting open a watermelon and finding deep cracks or hollow areas, especially because social media often claims these are signs of dangerous chemicals. However, experts say that internal cracks are not always a health risk. They commonly develop because of uneven watering, rapid growth after dry weather, temperature changes, transport damage, or overripeness. These imperfections may affect the fruit’s texture or sweetness but are usually harmless.

One chemical often mentioned is chlorfenuron, a plant growth regulator that speeds up fruit growth by encouraging cell division. It can sometimes contribute to hollow centers or unusual flesh patterns. Regulations differ worldwide, with some countries banning its use while others allow limited applications under strict rules. Scientists have not confirmed that normal dietary exposure causes serious health problems, although some animal studies found harmful effects at very high doses. Because of the remaining uncertainty, many authorities use precautionary regulations to protect consumers.

When choosing a watermelon, simple observations are the best guide. Pick one that feels heavy for its size, has a creamy yellow ground spot, a firm rind, and a dried stem that shows it ripened naturally on the vine. After cutting it open, check that it smells fresh and sweet, has a crisp texture, and tastes refreshing.

If the watermelon has only minor internal cracks and otherwise looks and smells normal, it is generally safe to eat. However, if you notice “unpleasant odors, sliminess, mold, or unusual flavors,” it should be thrown away immediately, as spoiled fruit is a much greater concern than approved levels of growth regulators.

Ultimately, “food choices should be guided by knowledge rather than fear.” Knowing the difference between harmless imperfections and real signs of spoilage allows you to enjoy watermelon safely and confidently.