There are many medical conditions that can disqualify someone from joining the military. Here are some of the most common ones:

• Abdominal Organs and Gastrointestinal System: Certain conditions related to the abdominal organs and gastrointestinal system may disqualify you from military service.

• Blood and Blood-Forming Tissue Diseases: Anemia, hemorrhagic disorders, leukopenia, and immunodeficiency are some of the blood and blood-forming tissue diseases that may disqualify you from military service.

• Dental: Diseases of the jaw or associated tissues that are not easily remediable, temporomandibular disorders, and myofascial pain dysfunction that is not easily corrected or has the potential for significant future problems with pain and function may disqualify you from military service.

• Extremities: Arthritis, chronic osteoarthritis or traumatic arthritis of isolated joints of more than a minimal degree, and other miscellaneous conditions of the extremities that interfere with the following of a physically active vocation in civilian life or that prevent the satisfactory performance of military duty may disqualify you from military service.

• Neurological Disorders: Cerebrovascular conditions, any history of subarachnoid or other types of hemorrhage, and other neurological disorders may disqualify you from military service.

• Vision: Certain vision conditions may disqualify you from military service, such as color vision deficiency of any kind.

• Dental: Applicants must have sufficient teeth, natural or artificial, in functional occlusion to ensure satisfactory biting or chewing.

• Allergic Conditions: Any allergic condition that requires the use of emergency medication interventions, history of anaphylaxis or systemic allergic reactions to stinging insects, food or food additives may disqualify you from military service.

• Respiratory System: A history of recurrent bronchospasm for any reason, including asthma, reactive airway disease, and exercise-induced bronchospasm may disqualify you from military service.

• Heart and Vascular System: Cardiovascular defects or other congenital abnormalities, history of recurrent or ongoing cardiopulmonary symptoms including syncope (fainting), and other heart and vascular system conditions may disqualify you from military service.

It is important to note that many conditions are not always permanently disqualifying and should not dissuade potential applicants. Recruiters and military doctors will determine if they will affect your duties. Sometimes waivers from medical professionals are an option for certain medical conditions, particularly ones that relate to eyesight and weight. However, others, like depression and Crohn’s disease, are likely to disqualify you from service, especially if they have affected your education or employment in the past.