
Dr Tan Kok Kuan
Men’s Health & Sexual Health Doctor
MBBS (S’pore), Cert. Men’s Health, Cert. Clinical Dermatology,Member, Academy for Men’s Health (Singapore)Member, Singapore Association for the Study of ObesityMember, International Society of Sexual Medicine
If you’ve been feeling tired, flat, less driven or just not like yourself, it might not just be stress. Testosterone deficiency (hypogonadism) is common in Singaporean men, especially with age. Many men brush it off, but the effects can be real: lower mood, weaker muscles, reduced libido and slower recovery. Recognising these changes can be the first step toward feeling more balanced and steadier again.
Testosterone deficiency, also known as hypogonadism, is a condition in which the body does not produce enough testosterone to meet its normal physiological needs. Testosterone is the primary male sex hormone and plays an important role in regulating sexual function, muscle mass, bone health, mood, energy levels and sperm production.
Although testosterone levels naturally decline with age, some men experience a more significant reduction that results in noticeable symptoms and affects their quality of life. Testosterone production relies on a complex hormonal signalling system involving the hypothalamus and pituitary gland in the brain, which stimulates the testicles to produce testosterone. Testosterone deficiency may occur when the testicles are unable to produce sufficient testosterone or when this hormonal signalling process is disrupted.
The symptoms of low testosterone often develop gradually and can affect both physical and emotional health. Men may experience the following:
If these symptoms persist, it is important to consult a men’s health doctor for assessment and appropriate treatment.
Several factors can contribute to testosterone deficiency, ranging from natural ageing to medical or lifestyle-related conditions.
Occasional changes in energy, mood or sexual function are common and are not always caused by low testosterone. However, it may be appropriate to seek medical advice if you experience one or more of the following:
Seeking medical advice early can help determine whether your symptoms are related to testosterone deficiency or another underlying condition, allowing appropriate treatment to begin if needed.
As many symptoms of low testosterone can overlap with those of other medical conditions, an accurate diagnosis requires more than symptoms alone. A comprehensive assessment helps determine whether testosterone deficiency is contributing to your symptoms and whether treatment is appropriate.
At Dr Tan Medical Center, the diagnostic process may include:
Treatment for low testosterone depends on the underlying cause, the severity of your symptoms and whether your hormone levels are confirmed to be below the normal range. The goal of treatment is not only to restore testosterone levels where appropriate, but also to improve symptoms, address contributing factors and support long-term health.
Healthy lifestyle habits can support testosterone production, improve overall hormonal health and help manage symptoms associated with low testosterone. Your doctor may recommend:
While lifestyle changes alone may not correct all forms of testosterone deficiency, they can complement medical treatment and support long-term health outcomes.
Medical conditions such as obesity, diabetes or thyroid disorders can contribute to low testosterone. Treating these conditions and optimising your overall health may help improve hormonal balance and reduce symptoms.
Certain medications may affect testosterone production or contribute to symptoms associated with low testosterone. Where appropriate, your doctor may review your current medications and discuss alternative treatment options if they are contributing to your symptoms.
If you are diagnosed with testosterone deficiency, your doctor may recommend Testosterone Replacement Therapy (TRT) to restore hormone levels. This therapy can be administered in several forms, depending on your health needs and preferences:
TRT can help improve energy, mood, libido and muscle strength, enhancing overall quality of life. At Dr Tan Medical Center, Dr Tan Kok Kuan develops individualised treatment plans to ensure safe, effective and closely monitored therapy tailored to each patient’s needs.
For men with clinically confirmed testosterone deficiency, TRT may help relieve symptoms associated with low testosterone and improve overall quality of life. While individual responses vary, potential benefits may include:
Many men notice improvements in energy, stamina and reduced feelings of fatigue as testosterone levels are restored.
TRT may help improve libido and, in some men, contribute to better sexual function and overall sexual satisfaction.
Restoring testosterone levels may help improve mood, motivation and emotional wellbeing while reducing feelings of irritability or low mood associated with testosterone deficiency.
Combined with regular exercise and a healthy lifestyle, TRT may help increase lean muscle mass and improve physical strength.
Maintaining healthy testosterone levels supports bone mineral density, which may help reduce the risk of osteoporosis and fractures over time.
While TRT can provide significant benefits, it may not be suitable for everyone. Some men may experience side effects such as:
Increased testosterone can stimulate oil glands, leading to breakouts.
TRT may worsen existing sleep-related breathing issues in certain individuals.
Hormonal changes may cause swelling or tenderness in the chest area.
Men with prostate conditions should be carefully monitored, as testosterone can affect prostate growth.
TRT can reduce sperm production and may impact fertility.
A thorough evaluation and ongoing monitoring by a qualified men’s health doctor are essential to ensure that TRT is safe, effective and appropriate for each patient’s individual needs.
Testosterone deficiency can have a significant impact on your physical health, emotional wellbeing and quality of life, but it is a treatable condition when properly assessed. Whether your symptoms are managed through lifestyle changes, treatment of underlying medical conditions or TRT, early evaluation helps ensure you receive the most appropriate care for your individual needs.
At Dr Tan Medical Center, Dr Tan Kok Kuan provides comprehensive assessments and personalised treatment for men with testosterone deficiency and other men's health concerns. By identifying the underlying cause of your symptoms and tailoring treatment accordingly, he aims to help patients achieve safe, effective and sustainable improvements in their hormonal health.
If you are experiencing symptoms of low testosterone, contact us to arrange a confidential consultation with Dr Tan Kok Kuan and discuss the treatment options available to you.

Dr Tan Kok Kuan
Men’s Health & Sexual Health Doctor MBBS (S’pore), Cert. Men’s Health, Cert. Clinical Dermatology, Member, Academy for Men’s Health (Singapore) Member, Singapore Association for the Study of Obesity Member, International Society of Sexual Medicine
Dr Tan Kok Kuan is a men's health and sexual health doctor with over 20 years of clinical experience in the assessment and management of testosterone deficiency and other conditions affecting male hormonal and sexual health. He adopts an evidence-based, patient-centred approach, recognising that symptoms of low testosterone may be influenced by hormonal changes, underlying medical conditions and lifestyle factors.
Where appropriate, Dr Tan provides comprehensive hormonal assessment and personalised Testosterone Replacement Therapy (TRT), with ongoing monitoring to ensure treatment remains safe, effective and tailored to each patient's individual needs. His clinical practice focuses on helping men restore hormonal balance, improve their quality of life and achieve sustainable long-term health outcomes.
“Every patient deserves our fullest attention.”
10 Sinaran Drive #09-30, Novena Medical Centre, Singapore 307506
Tel: (+65) 6513 0359 | WhatsApp: (+65) 9750 5037
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