Scurvy - Vitamin C deficiency. Most common in sailors in the 18th century.
If you have a lot of cholesterol in your vascular system it blocks the flow of blood and may cause disruptions.
diet related diseases are when your overweigth or obese you should go on a diet and if you dont you get like diabetes etc..
a high fat diet can couse several heart diseases.
There are many diseases that results from deficiency of one or more essential part of your body. For example, scurvy is caused by deficiency of vitamin C.