What kind of cholesterol test has he had? If it was only general one, you should ask for a proper breakdown test before freaking out. This would show the ratio of good (HDL) to bad (LDL) cholesteral and, much more important, give his triglycerides level. Just having high cholesterol is not related to having a higher risk of heart disease. Is he overweight? Being overweight and/or having a high level of triglycerides is much more relevant to heart disease risk than high cholesterol. As I said, before panicking and changing his diet or starting medication, he should insist on having more relevant tests. Statins, for example, can have very unpleasant side effects and are not proven to help people who haven't already had a heart attack!