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Issue Encyclopedia · Guideline H · Drug Involvement

Psilocybin / Hallucinogenic Mushrooms

What the decided record shows for this issue, computed from public DOHA hearing-level decisions. Descriptive history, not a prediction.

Does psilocybin / hallucinogenic mushrooms affect a security clearance?

Psilocybin / Hallucinogenic Mushrooms is an issue decided under Guideline H, Drug Involvement. In the decided DOHA record it appears in 342 hearing-level cases, and 25% of the 342 decided ended with access granted (87 granted, 255 denied). The mitigating conditions judges credited most often, and example decisions either way, are below.

Basis: 342 decided hearing-level cases raising this issue. Descriptive history of decided cases, not a prediction.

More questions people ask the record

Decided cases

342

hearing-level decisions raising this issue

Granted

25%

87 granted · 255 denied or revoked

Official mitigating conditions cited

The formal mitigating conditions the case profiles identified on this issue, in cases that were granted and in cases that were denied. Each is shown with its paragraph number and a plain name. Read what each condition says.

  • ¶ 26(a) · So long ago, or so infrequent, that it is unlikely to recur

    In granted cases
    52
    In denied cases
    17

  • ¶ 26(b) · The involvement acknowledged, with abstinence established

    In granted cases
    33
    In denied cases
    6

  • ¶ 26(c) · Prescription misuse followed a prolonged illness and has ended

    In granted cases
    15
    In denied cases
    3

Circumstances credited in granted cases

The specific circumstances the judge expressly credited among the granted cases on this issue where that detail was extracted.
  • abstinence period documented · credited in 1 granted case
  • acknowledgment and remorse · credited in 1 granted case

Recent decided examples

  • ISCR Case No. 25-01492Granted2026

    The applicant, a 32-year-old engineer, was granted eligibility for a security clearance despite past drug involvement. He admitted to using various illegal substances, including THC, Adderall, ketamin…

  • ISCR Case No. 25-01563Granted2026

    This case involves security concerns regarding the applicant's alcohol consumption, drug involvement, psychological conditions, and personal conduct. The applicant admitted to several allegations rela…

  • ISCR Case No. 26-00013Denied2026

    The applicant's security clearance was denied due to unresolved security concerns related to drug involvement and criminal conduct. While the applicant mitigated concerns under personal conduct and al…

  • ISCR Case No. 25-00552Denied2026

    The case involves an applicant seeking security clearance who faced allegations under Guidelines D, H, and E. The applicant admitted to some drug use and mental health issues but denied allegations of…

See all 342 decisions on this issue

Related issues under Guideline H

How these numbers are measured

Scope: decided hearing-level cases whose per-allegation profile records this issue, matched to the same issue value the search filters use, so a count here and a filtered search always agree. A case raising several issues counts under each one. The mitigating conditions and the credited circumstances below were extracted for a subset of the record, so both are counts of cases rather than rates. Pages exist only for issues with at least 25 decided cases, and † marks any split built on fewer than 20.

Reading the statistics

  • Granted = access granted or continued; Denied = denied or revoked.
  • Grant rate = granted ÷ (granted + denied).
  • † marks figures based on fewer than 20 cases, too few to be reliable.
  • Hovering any rate shows its statistical range (a 95% confidence interval).
  • Figures are descriptive counts over decided, public DOHA ISCR decisions, never predictions or assessments of any pending case.

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