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This science fair project was conducted to find out the correlation between sugar intake and weight gain. The science project experiment was done using young baby mice fed with apples and jelly beans.


Baby mice fed with jelly beans will gain weight more quickly than those fed with apples.

Scientific Terms

Crystalline, sucrose, fructose, lactose, pancreas, insulin, diabetes



Sugar is a sweet flavored crystallized substance that is made from sucrose obtained from sugarcane. It has a sweet taste and is the main ingredient in many beverages and food delicacies. Sugar is a simple carbohydrate. In milk, it exists in the form of lactose, in fruits, as fructose and as sucrose in refined table sugar.

When too much sugar is consumed, it gets absorbed into our blood stream and our blood sugar levels will rise. This causes the pancreas to secrete more insulin to convert the sugar and to store it for future use in our bodies. This causes the person to gain more weight.

Eating too much sugar-rich food like chocolate cakes and other sweets can be both addictive and bad for health. Sugar normally gets digested and converted into energy very quickly. It makes us feel energetic and we begin to crave for more. This can lead to an addiction, and if not kept in check, eventually, health problems such as being overweight and diabetes.

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Complexity level:
Project cost ($):
Time required:
1 hour to prepare, 14 days for the science project experiment
Material availability:
Mice may be purchased at a pet store.
Safety concerns:

Wear protective gloves when handling the mice to prevent being bitten. Adult assistance is required.