The topic of my master Thesis is "Diseases of the supporting and musculoskeletal system".In this thesis, I give an overview on aspects of the two diseases osteoporosis and rheumatism.In the first part, I focus on the disease osteoporosis. I discuss the different types, causes and risk factors of osteoporosis. Moreover, I provide a detailed list of symptoms, diagnostic- and therapeutic strategies. Also the influence of micronutrient deficiency, caused by unhealthy diet or lifestyle, is exactly described. In addition, special micronutrients, which are important for the bone, are described. Examples are Calcium and Vitamin D. In the second part, a similar outline is given for the rheumatoid arthritis and related rheumatic diseases.First, I describe the different forms with their associated symptoms and diagnosis possibilities. Here, primarily the inflammatory forms are described and therefore the process of inflammation is discussed in detail.Finally, I describe therapeutic options for all rheumatic diseases and discuss how nutrition and micronutrients impacts on the disease or its progression.