SHIFT HEALTH · TESTOSTERONE GUIDES
TRT explained: assessment, benefits, risks and follow-up
Testosterone replacement therapy is treatment for an appropriately diagnosed deficiency. It is not a general answer to ageing, tiredness or wanting better gym results.
General information for adults, not a diagnosis or individual medical advice. SHIFT does not prescribe.
On this page
What is TRT?
TRT means testosterone replacement therapy. A clinician may consider it where symptoms and consistently low testosterone results support a diagnosis, after investigating the cause and assessing suitability. Not everyone with symptoms needs testosterone. Treatment for another condition or changes to existing care may be the appropriate route.
How does private TRT assessment work?
A private route should still begin with a proper clinical history and appropriate testing. Expect questions about symptoms, medicines, existing conditions, fertility and previous hormone use. Ask who provides clinical care and who dispenses any prescription. Payment for a consultation or blood test does not guarantee that treatment will be recommended.
Potential benefits and realistic expectations
For suitable patients with confirmed deficiency, treatment may improve sexual symptoms and support bone and muscle health. Response varies. Agree which symptoms will be reviewed and how the clinician will judge whether treatment is helping. TRT cannot promise a particular body shape, confidence level or improvement in relationships.
Possible risks and side effects
Testosterone can cause acne, increase red blood cell levels and reduce sperm production. Other risks and suitability depend on your health history and the preparation used. Tell the clinician about all health conditions and medicines. Follow-up is part of treatment, not an optional extra once a prescription has been issued.
TRT and fertility
Discuss plans for children before starting treatment, including if you are unsure about the future. Testosterone can suppress sperm production and is not a fertility treatment. Specialist advice may be needed to discuss options. If you already use testosterone and want children, speak with your prescriber rather than trying to manage changes yourself.
Gel or injections?
Testosterone can be prescribed in different forms, including gels and injections. Practical use, risks and monitoring differ. The clinician should explain the options suitable for you and the product-specific instructions, including precautions around transfer of gel to another person. This guide does not recommend a product, dose or treatment schedule.
What monitoring is needed?
Clinical follow-up considers symptoms, side effects and blood results. Testosterone and red blood cell checks are commonly part of monitoring; prostate assessment and other checks depend on individual circumstances. The prescriber sets the timing, interprets results and decides whether treatment should continue or change. My Timber does not replace this clinical monitoring.
If treatment is not helping
Ask when benefits should be reviewed, how to report side effects and what happens if the balance of benefit and risk changes. Discuss stopping or switching with your prescriber. Before starting, establish who can help if your clinic closes or you move provider. Keep copies of prescriptions and results for continuity of care.
Your questions
Is TRT a weight-loss treatment?
It is not a general weight-loss treatment. Its purpose is to treat an appropriately diagnosed testosterone deficiency where suitable.
Does SHIFT prescribe testosterone?
No. SHIFT provides information and everyday support. Testosterone assessment and treatment are not currently available to book through SHIFT.
Keep the wider picture in view.
My Timber is free to join for everyday support with food, movement, check-ins and personal progress. You do not need to buy treatment. It does not diagnose hormone problems or provide clinical monitoring.
Explore My TimberExplore blood tests · Sleep concerns · Weight and testosterone
Sources and availability
By Matt O’Brien · Source-checked 21 October 2026. This is editorial information, not a clinician-reviewed assessment.
Testosterone testing and treatment are not currently bookable through SHIFT. No stock available today.
Understand it before you decide.
The purpose, evidence, limits and useful questions — all in one place.
Low testosterone symptoms: what else could explain them? →Lower sex drive or erection changes: where to start →Private TRT costs: compare the whole care arrangement →Testosterone blood tests: preparation and results →TRT and fertility: the conversation to have before treatment →TRT explained: assessment, benefits, risks and follow-up →TRT follow-up: monitoring, reviews and changing provider →Weight and testosterone in men →A guide does not create a booking or change availability. Check the service or product page for the current details.
