6. Add lemon to foods and drinks
The saying "lemon adds a lot" is definitely true with regard to children’s immune systems. Lemons help to balance the body’s pH levels, which help to develop healthy bacteria at the expense of harmful viruses. You can add a slice of lemon to your child’s water bottle, add a little lemon as a substitute for salad dressing, or use it in cooking and baking. Children probably won’t notice the difference, but their immune system will certainly benefit from it.