4. As a result of /Because of/Due to/Owing to reading the book, we’ve learned a lot.

　　5. The cause of/reason for/overweight is eating too much.

　　6. Overweight is caused by/due to/because of eating too much.

　　7. The effect/consequence/result of eating too much is overweight.

　　8. Eating too much causes/results in/leads to overweight.