Help me answer these questions for health:

1.) Why do people who start smoking at a young age and continue into adulthood have a higher risk for related diseases?

2.) Name five diseases for which obesity is a risk factor.

3.) Why does watching television or playing video games contribute to obesity?

4.) List two effects of sun exposure.

5.) Give an example of one short-term and one long-term behavioral impact on health.

6.) Why might lack of sleep increase risk factors for depression and anxiety?