While most steroid users don't resemble massive bodybuilders, it's still possible to identify someone using steroids simply by observing them. Look for a combination of signs – one sign alone may not indicate steroid use, but when multiple signs appear together, the likelihood increases significantly. Keep reading to learn what to watch for if you suspect someone’s muscle growth isn’t entirely natural.
Steps
Acne

Anabolic steroids stimulate the body to produce excess oil, leading to acne. The increased oil production clogs pores, resulting in pimples. Acne can appear anywhere on the body, but it tends to concentrate on the shoulders and back, where steroid activity is strongest.
- Even without visible acne, their skin is often oily or greasy. You may notice their hair is similarly greasy due to the scalp producing more oil.
Upper Body Imbalance

The neck and shoulder muscles tend to absorb steroids more effectively. Anabolic steroids work by binding to androgen receptors in the body. The neck and shoulder muscles have more androgen receptors, which is why they often benefit more from steroid use.
- This can result in a ‘capped’ effect – when the neck and shoulder muscles grow disproportionately, giving the appearance of someone wearing a collar.
- Those using steroids may also have a significantly larger upper body compared to their lower body – think of someone who looks like they’ve never touched a leg workout.
High Energy

Steroid users have the ability to train more frequently and for longer periods of time. Steroids provide extra energy, allowing users to train for extended hours and have greater endurance throughout their workouts. You might even notice them working out multiple times a day.
- Because of this, steroid users often seem to spend all their time in the gym. Those motivated to use steroids are typically obsessed with muscle growth, prioritizing it above everything else – and steroids fuel their energy to keep training.
Rapid Muscle Growth

Plateaus typically occur when muscle mass approaches its maximum potential. When someone begins training, their muscles grow quite quickly for a period. This muscle growth will slow down and eventually plateau as training continues. If someone who previously had a balanced physique suddenly starts gaining muscle mass, they might be using steroids.
- Stretch marks may also appear on their skin. This indicates that their muscles have developed faster than the skin can adapt. These marks are most often found on the upper body, arms, and shoulders.
Body Fat Remains Consistently Low

Body fat levels usually fluctuate during training. While it is possible to gain muscle and lose fat simultaneously, this requires a specific diet and workout regimen. If someone appears to never gain body fat while continuously adding muscle mass, they are likely using steroids.
- Winter is a good time to observe this sign. Most people tend to store some body fat during the colder months. If this person doesn’t follow that pattern but continues to gain muscle, it’s likely that steroids have played a role in their progress.
Feminine Traits (in Men)

Increased artificial testosterone levels can cause the body to stop producing its own testosterone. When a male takes steroids, it typically takes some time before their body starts producing testosterone again, which in turn raises the estrogen levels. This can lead to several characteristics, such as:
- Gynecomastia: the development of breast tissue in men
- Shrinking testicles and penis
- Hair loss
- Reduced sperm count
- Erectile dysfunction
- Erectile dysfunction can become a sensitive issue and a private matter for men.
- However, if they understand that this issue is fairly common and likely due to stress, they may be open to seeking help.
- Symptoms may lessen if they seek assistance.
Có các đặc điểm nam tính (ở nữ giới)

Steroid làm tăng mức testosterone ở nữ giới. Steroid có tác dụng ở phụ nữ trái ngược với nam giới vì cơ thể phụ nữ thường sản xuất mức testosterone thấp hơn. Điều này nghĩa là nếu phụ nữ sử dụng steroid đồng hóa, họ có thể phát triển các đặc điểm sau:
- Vú nhỏ lại
- Giọng nói trầm hơn
- Phát triển lông trên mặt và cơ thể
- Kinh nguyệt không đều hoặc mất kinh
- Phát triển âm vật bất thường
Tỷ lệ cơ bắp trên chiều cao ở mức cao

Những người dùng steroid thường có chỉ số khối lượng không có chất béo (FFMI) cao. Chỉ số FFMI biểu thị tỷ lệ cơ bắp trên chiều cao. Tùy không hoàn toàn chính xác, nhưng các nhà khoa học đã xác định rằng chỉ số FFMI ở mức 25 là giới hạn của những người xây dựng cơ bắp theo cách tự nhiên. Nếu người này có chỉ số FFMI ở mức 26 trở lên, rất có thể họ đang dùng steroid.
- Tỷ lệ phần trăm mỡ cơ thể ở mức thấp cũng là nguyên nhân của tình trạng da nổi gân thường được cho là có liên quan đến việc sử dụng steroid, đặc biệt là ở các vận động viên thể hình.
- Có thể bạn không có số liệu chính xác để tính toán chỉ số FFMI của người mà bạn quen biết, nhưng bạn có thể ước đoán dựa trên kinh nghiệm. Nếu bạn đang xem xét một vận động viên nổi tiếng, số liệu mà bạn cần thường được đăng công khai.
Có kiến thức về hoóc môn nam

Steroid users often conduct their own research to determine their cycle. There is limited medical research on the use of anabolic steroids to enhance performance. This means that users must rely on their own investigation into which substances help them achieve the desired results.
- Most steroid users will deny using them if asked directly, so asking simple questions can be a good way to gauge how much they know.
- For example, you could compliment their physique or energy and say something like, “I’d love to know how to gain muscle like you.”
- You could also say that someone recommended something to you and ask for their opinion: “Someone told me I should take HGH, what do you think?”
Erratic Temper or Quick to Anger

"Roid rage" is one of the most common side effects of steroids. If you notice someone who used to be fairly calm but now loses their temper over trivial matters, it could be a sign of steroid use.
- There are many other factors that can cause mood swings. If this is the only sign you observe, it’s best to address the specific situation rather than confront them about your suspicion that they are using steroids.
- Abusing anabolic steroids is closely linked with stress, depression, and suicide.
Advice
- Steroids are addictive and can cause severe harm to the body. If you believe someone you care about is using steroids, encourage them to seek help.
Warning
- Steroids are particularly dangerous for teenagers. If you suspect that a teenager is using steroids, it's important to talk to them as soon as possible.
- One single sign can't definitively indicate that someone is using steroids. However, if multiple signs occur at the same time, the likelihood increases, though it still isn't 100% certain. Only a blood test can confirm whether someone is using steroids or not.
