1. Allergies occur when the immune system is abnormally sensitive to particular substances. Why do people sometimes take antihistamines for their allergies? Can you guess from the word antihistamine...

1. Allergies occur when the immune system is abnormally sensitive to particular substances. Why do people sometimes take antihistamines for their allergies? Can you guess from the word antihistamine what an antihistamine does?

2. Text or write a letter to Grandpa telling him about lowcarb diets. Tell him why many people have been able to lose weight on low-carb diets, and explain some potential dangers of the diets as well.