Dietary

• One of the most common lifestyle restrictions that a doctor orders is restrictions on the diet. The restrictions placed on a diet depend on the type of condition being treated. An overweight person needs saturated fats, refined sugars and refined carbohydrates limited. A diabetic needs to have sugar restricted and to pay attention to weight control dietary restrictions. Sodium intake restriction is prescribed for a person who suffers from high blood pressure.
  
  

Alcohol

• Doctors impose alcohol restrictions on patients for a number of reasons. These could all be tied to the same problems that dietary restrictions are prescribed for, as alcohol is a large source of empty calories. Alcohol restrictions might also be imposed on someone suffering from alcoholism, or conditions such as liver or kidney disease. Alcohol restrictions also come into play for someone who needs to take another medication or treatment that doesn't react well with alcohol.
  
  

Smoking

• With everything the medical industry has learned about smoking, this is a lifestyle restriction that doctors impose on all their patients, regardless of health. However, for some smokers who have developed conditions because of the habit, this restriction becomes an absolute necessity. Conditions such as emphysema, cancer, lung disease, heart disease, diabetes and almost any other health problem result in a doctor's absolutely prohibiting a patient from continuing with the habit.
  
  

Stress and Strain

• Although exercise is a very important part of a healthy lifestyle, sometimes a physician limits the amount of strenuous exercise a person engages in. This often happens after an injury or a heart problem. Stress is also something that may require lifestyle restrictions to alleviate. Stress contributes to physical and mental health problems, so a doctor may need to restrict the amount of hours a person works, extra responsibilities they take on or other stresses.