What Disqualifies You From Joining the Military?

Why Honesty Matters More Than You Think

Before getting into specifics, this needs to be said clearly: the military does thorough background investigations and medical reviews. They check criminal records, medical records, school records, and social media. They interview references. They cross-check your answers against databases you don't know exist.

Lying or omitting information during MEPS processing is called fraudulent enlistment — a federal crime. People have been dishonorably discharged years into their service when pre-existing conditions or legal history came to light. The cover-up is often worse than the underlying issue. Disclose everything, and let the process determine what's waiverable. Working with a recruiter who has your complete picture gives you the best shot at a waiver if one is needed.

Medical Disqualifiers

The military's medical standards are governed by Department of Defense Instruction 6130.03. The standards exist because military service places extreme physical and environmental demands on the human body. Many conditions that are perfectly manageable in civilian life create real risks in a combat or operational setting.

Mental Health Conditions

This is one of the most frequently misunderstood areas. A history of mental health treatment does not automatically disqualify you — but the type of diagnosis and treatment history matters enormously.

• Likely permanent disqualifiers: Schizophrenia, bipolar disorder (any type), current psychosis, personality disorders that required inpatient treatment, or any condition requiring ongoing antipsychotic medication.
• Potentially waiverable: A history of mild depression or anxiety that was resolved, did not require hospitalization, and has not required medication for at least 12–24 months (branch-dependent). Single episodes with documented resolution fare better than recurring patterns.
• ADHD: ADHD diagnosed before age 14 and treated with medication requires a minimum medication-free period (often 15 months) and demonstrated ability to function without it. ADHD diagnosed after age 14 may require a waiver. ADHD that required an IEP or academic accommodation in school must be disclosed and will be evaluated.
• Suicide attempt history: This is seriously scrutinized. A single attempt that was situational, resolved, with no ongoing ideation and documented follow-up care may be waiverable in some branches. Multiple attempts or recent history are generally disqualifying.

Physical and Orthopedic Conditions

• Back problems: Herniated discs, spinal fusion surgery, or chronic back conditions that required treatment are scrutinized carefully. Mild scoliosis (under 20 degrees curvature) is generally not disqualifying; severe scoliosis is.
• Joint surgeries: ACL reconstruction, knee replacement, hip surgery — all are evaluated. Many are waiverable if you have demonstrated full recovery and meet fitness standards. Recent surgery (within the past year) often requires waiting for complete healing before MEPS clearance.
• Flat feet: Pes planus (flat feet) is only disqualifying if it causes pain or functional limitation. Asymptomatic flat feet that don't impair running or walking are generally fine.
• Vision: Uncorrected vision must meet minimum standards. Many branches allow enlistment with correctable vision (glasses or contacts). Some combat and aviation roles have stricter requirements. LASIK and PRK are generally accepted after a healing period, but must be disclosed.
• Hearing: Must meet audiogram standards. Significant hearing loss in both ears is disqualifying for most roles. Some roles (admin, intel) have more flexible standards than combat roles.

Chronic Conditions and Medications

• Asthma: Asthma diagnosed after age 13 or requiring medication is disqualifying without a waiver. Some mild cases are waiverable with pulmonary function testing showing normal results.
• Diabetes: Type 1 diabetes is permanently disqualifying. Type 2 diabetes controlled by diet and exercise only (no medication) may be evaluated case by case, but is generally disqualifying.
• Epilepsy or seizure history: A seizure disorder requiring medication is disqualifying. A single febrile seizure in childhood (common in young children) is generally not disqualifying if there has been no recurrence and no medication for several years.
• Current medications: Many prescription medications are disqualifying not because of the underlying condition but because the medication itself is incompatible with military service (stimulants, antipsychotics, anticoagulants, certain antidepressants). Disclose all medications.

BMI and Weight Standards

Each branch has height-and-weight tables and body fat percentage standards. If you exceed the weight maximum for your height at MEPS, you will be temporarily disqualified. This is fixable — lose the weight, meet standards, reapply. It is one of the most common reasons recruits are delayed at MEPS, and it is entirely within your control.

Legal Disqualifiers

Your criminal history is reviewed at MEPS through a National Criminal History check and follow-up with local and state law enforcement. Sealed or expunged records still need to be disclosed — the military's background investigation process can access records that civilian employers cannot.

Felonies

Federal felony convictions are essentially permanent bars to enlistment. State felony convictions may be waiverable depending on:

• The nature and severity of the crime (violent vs. non-violent)
• How long ago the offense occurred
• Whether there have been subsequent offenses
• Whether probation or parole has been completed
• Branch-specific waiver policy

Violent felonies, sexual offenses, crimes involving minors, and crimes related to drugs beyond simple possession are rarely if ever waived.

Misdemeanors

Most misdemeanors are waiverable, but accumulation matters. One minor misdemeanor is different from a pattern of three or four. Misdemeanor DUI / DWI requires a waiver and becomes more difficult with multiple offenses. Domestic violence misdemeanors are treated more seriously because of federal law (the Lautenberg Amendment) prohibiting people convicted of domestic violence offenses from possessing firearms — which military service requires.

Drug-Related History

Drug use is evaluated both in terms of what you've used and how often. Here's a general framework:

• Marijuana: Casual experimentation (1–5 times) is often waiverable across most branches. Regular use may require a waiver. Positive drug test at MEPS is an immediate disqualification from that day's processing.
• Cocaine, methamphetamine, Ecstasy: Harder to waive but not always impossible. Frequency and recency matter. These require branch-level waivers and are scrutinized heavily.
• Heroin / opioids: Use of heroin or dependency on opioids is generally permanently disqualifying across all branches.
• Prescription drug misuse: Using someone else's prescription (stimulants, opioids, benzodiazepines) is treated similarly to illicit drug use.

Other Disqualifying Factors

Tattoos and Body Modifications

Policies vary by branch but the general rules are: no tattoos on the face, no tattoos on the neck above the collar, limited tattoos on hands, and no tattoos that are racist, extremist, sexist, or gang-related in content regardless of location. Extensive tattoo coverage that limits your ability to wear a uniform may also be an issue. Each branch has updated these policies in recent years — verify current standards with a recruiter.

Financial History

Extreme financial problems — outstanding judgments, unresolved tax liens, severe debt — can be a concern for security clearance-eligible jobs. They may not disqualify you from enlistment itself but can disqualify you from certain jobs. Bankruptcies are evaluated but are not automatic disqualifiers.

Dependents

Single parents of minor children face significant hurdles. If you are the sole legal guardian of a minor and have no one to legally care for that child during deployment, most branches will not accept you. Some branches accept single parents with a legal family care plan in place, but the policy is strict and varies by branch. Having more than two dependents who are not your spouse can also affect eligibility in some branches.

Citizenship and Immigration Status

You must be a U.S. citizen or a legal permanent resident (green card holder) to enlist. Undocumented immigrants, visa holders, and DACA recipients are not eligible for enlistment under current law. Naturalized citizens are fully eligible on the same basis as natural-born citizens.

Frequently Asked Questions

Conclusion

Disqualifiers fall into two categories: things that can be worked around with time, documentation, or a waiver, and things that are genuinely permanent barriers. Most people who worry about being disqualified are actually in the first category — their issue is waiverable, or it's less serious than they fear.

The critical thing is to be honest. Disclose your full history to your recruiter. Let the professionals assess what's workable. Attempting to hide information is far more likely to end your military career than the underlying issue ever was.

If you have a specific concern, read our waivers guide to understand the process. And if you're in the research phase, use our branch comparison tool to understand which branches may be more or less flexible for your situation.