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What is “trim”, in the context of juicing for performance?

In the context of anabolic steroid use ("juicing"), "trim" is usually shorthand for tren, a very potent anabolic steroid. The term is more commonly spelled or pronounced as "tren," but in conversation it can sound like "trim," and some people use the spelling informally.
Trenbolone is known for:

Rapid increases in muscle mass and strength.
Helping preserve muscle while dieting.
Not being approved for human medical use in many countries (it's primarily a veterinary drug in places where it is legally available).
It's also associated with a high risk of side effects, including:
Elevated blood pressure and adverse effects on cholesterol.
Increased risk of heart and blood vessel problems.
Mood changes, irritability, anxiety, or aggression in some users.
Night sweats and insomnia.
Acne and hair loss in susceptible individuals.
Suppression of the body's natural testosterone production.

If you heard "trim" in a different context, it could also refer to:
Trimming body fat (getting leaner while maintaining muscle).
Less commonly, a slang term within a particular gym or online community.

If you can tell me where you heard it (for example, "I'm running test and trim" or "adding trim to a cycle"), I can interpret the specific meaning.

Thank you, I’m sure that it was tren that was intended, even though he seemed to say trim.

The source of my question was a cop-tuber (Eric Lavigne, of chan 2 cops 1 donut) asking a former Blackwater employee (Morgan Lerette) about juicing in frontline combatants.

Could you add anything about juicing and any other performance enhancing drug use by military, police, and any government agencies that require security clearances? Please note which use cases are authorized, which are unauthorized but tolerated, and which are not tolerated/allowed.

I am aware of an incident in Afghanistan where some Canadian soldiers were mistakenly targeted by an American combat pilot who was on authorized (and provided) ~uppers. Am adding this detail to encourage you to dig deep for my query.[/b]

That's an interesting question because it spans three different issues that often get conflated:
Medical performance enhancement (keeping people awake, preventing altitude sickness, treating ADHD, etc.).

Physical performance enhancement (anabolic steroids, growth hormone, EPO).
Illicit drug use (cocaine, methamphetamine, recreational stimulants).
The policies and the reality on the ground are often quite different.

Military

Authorized stimulant use

The best-documented example is the use of "go pills" during long-duration aviation missions.

Historically, the U.S. Air Force and Navy have authorized:
dextroamphetamine ("Dexedrine") for missions where sustained wakefulness was operationally necessary.

More recently, modafinil has increasingly replaced amphetamines for some missions because it generally has fewer cognitive and cardiovascular side effects.
These aren't issued casually. They require:
flight surgeon approval,
mission authorization,
medical screening,
documentation.

Pilots are often also issued "no-go pills" (sleep aids such as temazepam or zolpidem) to help establish sleep before missions.

The Tarnak Farm incident

The incident you mentioned is probably the best-known example.
In April 2002, U.S. Air National Guard pilot Harry Schmidt dropped a bomb on Canadian soldiers conducting a live-fire exercise near Kandahar, killing four and injuring eight. Schmidt had taken an authorized dose of dextroamphetamine before the mission. Investigations concluded that the authorized stimulant was not established as the cause of the friendly-fire incident; the findings focused much more heavily on decision-making, situational awareness, and failure to follow procedures. The case nevertheless intensified debate over "go pills" and their potential effects.

Special Operations

Elite units (SEALs, Delta Force, SAS, JTF2, etc.) generally have the same medical rules as the rest of their militaries.
However, because they may operate for:

24–72+ hours,
severe sleep deprivation,
high altitude,
extreme temperatures,
they are more likely to receive authorized medications such as:
stimulants,
altitude medications,
anti-malaria drugs,
pain medications,
antibiotics.

There is no publicly documented evidence that anabolic steroids are officially issued by Western special operations commands.

Anabolic steroids

This is where things become murkier.
Officially:

Most Western militaries prohibit non-prescribed anabolic steroid use.

That includes:

U.S.
Canada
UK
Australia
most NATO members.
If discovered, consequences may include:
administrative action,
loss of deployment status,
mandatory medical evaluation,
discharge,
criminal action in some jurisdictions.
Unofficial reality

Many veterans—including people from infantry, Rangers, Marines, and special operations—have acknowledged that steroid use occurs.

Common motivations include:

recovering from repeated injuries,
carrying heavy loads,
improving strength,
improving appearance,
maintaining muscle during repeated deployments.

The picture resembles elite athletics:
It is almost certainly more common than official statistics suggest, but far less common than internet discussions often imply.

There is no credible evidence that commanders generally encourage steroid use.

Growth hormone

Similar situation.

Official:

prohibited unless medically prescribed.

Unofficial:

occasional individual abuse has been reported.
no evidence of institutional acceptance.
Testosterone replacement therapy (TRT)

This is an interesting gray area.
If someone has documented hypogonadism:

TRT may be medically authorized.
They can often continue serving if they remain medically fit.
Using supraphysiologic testosterone to enhance performance is generally prohibited.
EPO (blood doping)
erythropoietin (EPO) dramatically improves endurance.

Military use:

essentially no evidence of official authorization.
significant clotting and cardiovascular risks.
little practical benefit for most combat tasks.

Police

Policies are usually stricter.

Authorized:

prescribed medications.
ADHD stimulants.
TRT when medically necessary.
Unauthorized:
anabolic steroids.
growth hormone.
illicit stimulants.

The practical concern is liability.
Departments are understandably wary of anything that could be argued to impair judgment or increase cardiovascular risk during critical incidents.

Security clearances

This is a subtle point.
Having a security clearance does not automatically prohibit someone from taking controlled medications.

For example, someone may legally possess:

ADHD medication,
TRT,
post-surgical opioids,
anti-anxiety medications,
provided they are prescribed, disclosed when required, and do not impair performance.
Unauthorized drug use creates problems because it can indicate:

criminal conduct,
susceptibility to coercion,
impaired judgment,
dishonesty if concealed.

Those factors matter more than the drug itself during clearance adjudication.

Contractors (Blackwater, Academi, etc.)

Former contractors have described a culture that could be physically demanding and sometimes more permissive socially than conventional military units.
However:

There is no evidence that companies like Blackwater officially supplied anabolic steroids or encouraged their use.

Individual contractors have certainly admitted using steroids, TRT, or other performance-enhancing drugs, but that appears to have been personal rather than organizational.

How common is steroid use?

Reliable numbers are hard to obtain because users have incentives not to disclose it. Surveys suggest lifetime anabolic steroid use among military personnel is higher than in the general population but still represents a minority. Rates vary widely by branch, occupation, and survey method, making precise estimates difficult. The evidence supports the conclusion that steroid use exists in military populations but is not an officially sanctioned practice.

A broader historical perspective

If you "dig deep," militaries have experimented with pharmacological performance enhancement for over a century:
During World War II, several nations—including Germany, the United Kingdom, Japan, and the United States—issued amphetamines to some troops to combat fatigue during extended operations.

During the Cold War, many militaries continued researching fatigue management, stimulants, and sleep scheduling for pilots and special operations personnel.
Modern Western militaries have shifted toward more controlled, medically supervised use of wakefulness-promoting medications and fatigue-management protocols rather than broad distribution of amphetamines.

One interesting theme across the research is that commanders increasingly recognize that drugs can only partially compensate for sleep deprivation. Even effective stimulants preserve wakefulness better than they preserve judgment, risk assessment, and complex decision-making, so modern doctrine generally treats them as tools for exceptional operational circumstances rather than substitutes for adequate rest.

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