Week 1 on testosterone: what 50mg weekly actually does to your body

What did @ellis.0113 actually say?

One week into testosterone injections at 50mg per week, this creator listed four early changes: heavy sweating, tender cheekbones they attributed to bone structure changes, oily skin bad enough to require two showers daily, and a voice change noticeable enough that someone in their life called them out on it. They framed all four as expected or exciting, and said they "can't wait to see what's next." That enthusiasm is understandable. But some of what they described is accurate, some is premature, and at least one claim needs a closer look before it spreads to 4,400 viewers who might be at the start of their own journey.

Does the science back this up?

Mostly yes, with one significant exception. Sweating, oily skin, and voice changes in week one are all plausible and documented. Structural bone remodeling at day seven is not.

Testosterone initiates androgenic effects at different speeds. Sebaceous gland activity, which drives oily skin, can increase within days of androgen exposure. A 2014 review by Wierckx et al. in the Journal of Sexual Medicine found skin and sweat changes among the earliest effects of testosterone therapy in transgender men, often appearing in the first one to four weeks. Voice changes, specifically a drop in pitch and increased hoarseness, typically begin within the first one to three months, so an early subjective change at week one is at the low end but not impossible. Sweating and elevated body temperature are consistent with androgen-driven increases in basal metabolic rate.

The cheekbone tenderness is where this gets complicated.

What did they get wrong (or right)?

They got the skin, sweat, and voice observations largely right. Bone tenderness tied to structural remodeling at week one is where the science does not hold up.

Craniofacial bone remodeling under testosterone is real but slow. It operates over months to years, driven by osteoblast activity stimulated by androgen receptors in bone tissue. A 2020 study by van Caenegem et al. in the Journal of Bone and Mineral Research documented bone density and structural changes in transgender men, but on timescales of 12 months or more. What is far more likely happening at day seven is soft tissue sensitivity, possibly from fluid redistribution or localized inflammation, not the cheekbones physically moving. The creator even hedges, saying it "found out is normal," which suggests they read something online and mapped it onto their symptom. That is a reasonable thing to do. It is also how misinformation spreads. Cheek soreness at week one does not mean your skull is reshaping. Tell your prescribing provider if you have unexpected pain.

Credit where it is due: they did not overclaim dramatic physical transformation. They said "I can't wait to see what's next," not "I've already changed." That framing is actually responsible.

What should you actually know?

If you are starting or considering testosterone therapy, the timeline of effects matters and varies significantly by person.

• Oily skin and acne are among the earliest androgenic effects, often within days to weeks. This is well-documented and manageable with dermatologic support.
• Voice changes are permanent once they begin but typically start between one and three months, not day seven, though subjective perception can shift earlier.
• Sweating increases are real and tied to metabolic changes, not just temperature perception.
• Bone structural changes are a long-term effect, measured in months to years, not days. Pain or tenderness in the first week warrants a call to your provider, not a TikTok explanation.
• Individual variation is significant. Studies like Wierckx et al. 2014 show wide ranges in onset timing across patients on similar protocols.

A 50mg weekly injection is within standard dosing ranges for gender-affirming testosterone therapy, though protocols vary widely by provider and patient. Anyone on testosterone should have baseline and follow-up labs, including hematocrit, lipid panels, and liver enzymes. None of that was mentioned here, which is not a criticism of the creator, but it is something viewers starting their own journey should ask their provider about explicitly.