Testosterone plays a vital role in men’s health, influencing everything from energy and mood to muscle mass and libido. While it’s normal for levels to gradually decline with age, some men experience levels that drop below what their body needs for optimal health — a condition often called low testosterone or testosterone deficiency syndrome (TDS).
At Zenvité, we help men identify the signs, understand the causes, and access evidence-based treatment options to restore their health and vitality.
What Is Low Testosterone?
Testosterone is the primary male sex hormone, produced mainly in the testes. It supports: Sexual function and libido
Muscle mass and strength
Bone density
Mood, energy, and cognitive function
Production of sperm and red blood cells
Levels naturally decline about 1% per year after the age of 30, but a significant drop can lead to noticeable symptoms and affect quality of life.
Common Symptoms of Low Testosterone
Low testosterone isn’t always obvious and symptoms may develop slowly. Watch for:
Physical Symptoms
Reduced libido and erectile difficulties
Loss of muscle mass and increased body fat (especially abdominal)
Reduced strength and endurance
Thinning hair or changes in skin texture
Decreased bone density and higher fracture risk
Mental and Emotional Symptoms
Low mood, irritability, or depression
Poor concentration or “brain fog”
Loss of motivation and confidence
Fatigue and lack of energy
What Causes Low Testosterone?
Age-Related Decline
A gradual decrease is part of normal ageing, but not all men experience symptoms.
Medical Conditions
Type 2 diabetes and obesity (linked to lower testosterone)
Sleep apnoea
Chronic illnesses or inflammatory conditions
Testicular injury or surgery
Pituitary disorders affecting hormone regulation
Lifestyle Factors
Chronic stress (elevated cortisol can suppress testosterone)
Excessive alcohol use
Poor sleep and physical inactivity
When to See a GP
Consider speaking to a GP if you experience: Ongoing fatigue and low energy
Reduced sexual desire or performance changes
Mood changes affecting daily life
Difficulty maintaining muscle or unexpected weight gain
Unexplained symptoms like brittle bones or reduced strength
Early evaluation can identify whether low testosterone is the cause or if other health issues are contributing.
How Is Low Testosterone Diagnosed?
Blood Tests
A simple blood test measures total testosterone levels. If low, additional tests may check: Free testosterone (the active form)
Luteinising hormone (LH) and follicle-stimulating hormone (FSH) to assess pituitary function
Prolactin and thyroid function to rule out other hormonal issues
Testing is ideally done in the morning when levels peak.
Treatment Options for Low Testosterone
Lifestyle Optimisation
Resistance training and physical activity
Improving sleep quality
Stress management to lower cortisol
Healthy weight loss in overweight men
These changes can sometimes restore levels naturally.
Testosterone Replacement Therapy (TRT)
If confirmed low levels and significant symptoms persist, TRT may be considered. It comes in various forms: Gels or patches applied to the skin
Injections (short-acting or long-acting)
Benefits of TRT may include: Improved energy, mood, and libido
Better muscle mass and bone density
Enhanced cognitive function
Regular monitoring is essential to ensure safety and effectiveness.
How Zenvité Supports Men With Low Testosterone
At Zenvité, we offer: Comprehensive hormonal testing to identify low testosterone and related factors
Personalised lifestyle plans to support natural testosterone production
Private GP consultations to discuss symptoms and treatment options
Safe, monitored TRT where appropriate, with ongoing reviews
We take a whole-person approach, ensuring treatment supports your overall health and wellbeing.
Don’t Ignore the Signs
Low testosterone can impact more than just sexual health — it can affect every aspect of your life. The good news? With the right support, you can feel like yourself again.
Book your private consultation with Zenvité today to explore testing and treatment options.

