Gooseberries are a highly nutritious fruit, high in fiber and low in calories.  They are rich in antioxidants, minerals, and vitamins.  There isn't much research done around gooseberries, but the nutrients they have are connected to known health benefits.  Some of them are lower cholesterol, blood pressure, and blood sugar.  Also, a reduction in the risk of diabetes, cancer, age-related illnesses, and heart disease.  
Basically, they are healthy and wonderful fruits, easy to snack, or to add in a smoothie or a meal. 
 
They are known to taste like greaps.  The read ones, like muscat greaps.