Discuss how being overweight can cause diseases in 4 different body systems

1- Discuss how being overweight can cause diseases in 4 different body systems. Include one scientific article to support your argument( You will need to include your article in the discussion). If the article is to long make to attach a copy of it, you will need a make a copy of the article and send it to me.
2- How could you help someone that is struggling with weight loss to improve their quality of life? What would you say to the person so she or he would understand about the importance of maintain a normal range weight as a way to prevent diseases?