Hormone Therapy in Singapore | Prostate Cancer Treatment

Living with a prostate cancer diagnosis can feel overwhelming, and understanding your treatment options is crucial for making informed decisions about your health. Hormone therapy, also known as androgen deprivation therapy (ADT), represents a cornerstone treatment for prostate cancer that has helped many men manage their condition effectively. This treatment works by reducing testosterone levels in your body, which prostate cancer cells need to grow and spread. Whether used alone or in combination with other treatments, hormone therapy offers hope and control for men at various stages of prostate cancer.

Hormone therapy in Singapore for prostate cancer is a systemic treatment that targets the hormones that fuel cancer growth. Since prostate cancer cells typically depend on androgens (male hormones), particularly testosterone, to grow and multiply, reducing these hormone levels can slow or stop cancer progression. This treatment approach is also called androgen deprivation therapy (ADT) or androgen suppression therapy.

The therapy works by either stopping your body from producing testosterone or blocking testosterone from reaching cancer cells. Normal testosterone levels in men range from 300 to 1,000 nanograms per decilitre, but hormone therapy aims to reduce levels below 50 nanograms per decilitre – often called the “castrate level.” This dramatic reduction starves prostate cancer cells of the fuel they need to survive and proliferate.

Hormone therapy may be recommended in several scenarios: before radiation therapy to shrink tumours, after surgery or radiation to eliminate remaining cancer cells, for cancer that has returned after initial treatment, or for prostate cancer that has spread beyond the prostate gland. The treatment has shown significant effectiveness in controlling prostate cancer growth and improving quality of life for many patients.

Ideal Candidates

• Men with intermediate to high-risk localised prostate cancer receiving radiation therapy
• Patients whose prostate cancer has recurred after initial treatment
• Men with locally advanced prostate cancer (spread to nearby tissues)
• Patients with metastatic prostate cancer (spread to distant organs)
• Those with rising PSA levels after primary treatment
• Men who cannot undergo surgery or radiation due to other health conditions
• Patients requiring tumour shrinkage before other treatments

Contraindications

• Severe cardiovascular disease requiring careful risk assessment
• Uncontrolled diabetes that may worsen with treatment
• Severe osteoporosis without appropriate management
• Active blood clots or high clotting risk
• Certain liver conditions that affect hormone metabolism
• Psychological conditions that may be exacerbated by hormonal changes

The decision to pursue hormone therapy requires careful evaluation of your specific cancer characteristics, overall health, and treatment goals. Your oncologist will consider factors such as your Gleason score, PSA levels, cancer stage, age, and general health status. Some men may need additional tests to assess bone density or cardiovascular health before starting treatment. The timing and duration of hormone therapy vary significantly based on individual circumstances, making personalised medical consultation essential.

LHRH Agonists

LHRH (luteinizing hormone-releasing hormone) agonists are medications that initially stimulate, then suppress testosterone production. Common options include leuprolide, goserelin, and triptorelin. These medications are typically administered as injections every one, three, four, or six months. After an initial testosterone surge lasting about a week, levels drop dramatically and remain suppressed throughout treatment.

LHRH Antagonists

LHRH antagonists like degarelix work differently by immediately blocking testosterone production without the initial surge. This approach may be preferred for men with extensive bone metastases or urinary obstruction where a testosterone surge could worsen symptoms. These medications require monthly injections but provide rapid testosterone suppression within days.

Anti-Androgens

Anti-androgen medications such as bicalutamide, enzalutamide, or apalutamide block testosterone from binding to cancer cells. These oral medications may be used alone or combined with LHRH therapy for maximum androgen blockade. Newer anti-androgens have shown particular effectiveness in treating prostate cancer.

Technology & Equipment Used

Modern hormone therapy utilises drug delivery systems including long-acting depot injections and sustained-release implants. Blood testing equipment monitors testosterone and PSA levels throughout treatment. Bone density scanners assess skeletal health, while cardiac monitoring equipment evaluates cardiovascular effects of treatment.

Pre-Treatment Preparation

Before starting hormone therapy, you’ll undergo comprehensive testing including PSA levels, testosterone measurements, complete blood count, and liver function tests. Your oncologist may order bone density scans to establish baseline skeletal health and cardiac assessments if you have cardiovascular risk factors. You’ll discuss fertility preservation options if relevant, as treatment affects sperm production. Medication reviews ensure no drug interactions, and you’ll receive detailed information about potential side effects and management strategies.

During the Procedure

For injection-based treatments, you’ll visit the clinic according to your prescribed schedule. The injection process takes only minutes, administered into the buttock or abdomen. LHRH agonist injections use special needles that deliver medication gradually over months. For oral medications, you’ll receive clear instructions about timing and whether to take with food. Your medical team monitors for immediate reactions, though these are rare. The actual administration is straightforward and typically painless.

Immediate Post-Treatment

After injections, you may experience mild soreness at the injection site that resolves within days. For LHRH agonists, you’ll be monitored for tumour flare symptoms during the first week. Your oncologist may prescribe anti-androgens temporarily to prevent this surge. You’ll receive instructions about recognising concerning symptoms and when to contact your medical team. Most patients resume normal activities immediately after treatment administration.

First 24-48 Hours

Injection site care involves keeping the area clean and dry. Apply ice if needed for comfort. Monitor for unusual swelling, redness, or discharge. Continue regular medications as prescribed. Stay hydrated and maintain normal activities. Report severe pain, fever, or allergic reactions immediately. Most men experience no significant immediate effects.

First Week

During LHRH agonist treatment, watch for temporary symptom worsening due to testosterone surge. This may include increased bone pain or urinary symptoms. Take prescribed medications to manage these effects. Begin noting any side effects in a diary for discussion with your oncologist. Maintain regular eating patterns and light exercise as tolerated.

Long-term Recovery

Hormone therapy effects develop gradually over weeks to months. Hot flashes typically begin within the first month. Energy levels may decrease, requiring activity adjustments. Bone health monitoring occurs every 1-2 years. Regular blood tests track treatment effectiveness and testosterone suppression. Lifestyle modifications including weight-bearing exercise and calcium/vitamin D supplementation support overall health during treatment.

Hormone therapy offers significant benefits in managing prostate cancer across various stages. For localised cancer, combining hormone therapy with radiation improves outcomes. The treatment effectively shrinks tumours before other interventions, making subsequent treatments more successful. In prostate cancer that has spread, hormone therapy can slow disease progression for years, providing valuable time and quality of life.

Many patients experience rapid PSA decline within weeks of starting treatment, offering reassurance about treatment effectiveness. Bone pain from metastases often improves dramatically. Urinary symptoms caused by prostate enlargement typically decrease as the prostate shrinks. The treatment’s systemic nature means it reaches cancer cells throughout the body, unlike localised treatments.

For men who cannot undergo surgery or radiation, hormone therapy provides an effective alternative. The flexibility of administration schedules accommodates various lifestyles and preferences. Newer medications have improved effectiveness while reducing some traditional side effects. Patients who are also exploring enlarged prostate treatment in Singapore may find hormone therapy beneficial for managing both cancer-related and prostate enlargement symptoms. Combined with other treatments, hormone therapy enhances overall cancer control.

Common Side Effects

Hot flashes affect most men receiving hormone therapy, ranging from mild warmth to intense sweating episodes. Fatigue and decreased energy occur gradually, impacting daily activities. Sexual side effects include reduced libido and erectile dysfunction. Weight gain, particularly around the midsection, develops over months. Mood changes, including irritability or depression, may occur. Breast tenderness or mild enlargement affects some men.

Rare Complications

Cardiovascular risks slightly increase, particularly in men with pre-existing heart conditions. Bone density loss accelerates, potentially leading to osteoporosis and fracture risk. Metabolic changes may worsen diabetes control or increase cholesterol levels. Cognitive effects, though debated, may include mild memory or concentration difficulties. Severe allergic reactions to medications remain extremely rare. Blood clots occur infrequently but require immediate attention.

Your oncologist employs various strategies to minimise these risks, including baseline health assessments, regular monitoring, and preventive interventions. Lifestyle modifications, medications for specific side effects, and careful treatment planning help manage complications. The benefits of controlling prostate cancer typically outweigh these manageable risks for appropriate candidates.

Hormone therapy costs vary significantly based on the specific medications, administration frequency, and treatment duration. At our urology clinic in Singapore, injectable LHRH agonists or antagonists typically cost more than oral medications but require less frequent administration. Long-acting formulations may offer convenience despite higher per-dose costs. The total treatment expense includes medication costs, administration fees, regular monitoring tests, and management of side effects.

Your treatment plan includes regular consultations, PSA testing, testosterone level monitoring, and periodic imaging studies. Bone density scans and cardiovascular assessments add to overall costs but are essential for safe treatment. Some patients require additional medications to manage side effects, affecting total expenses.

Quality oncology care involves experienced specialists familiar with current hormone therapy protocols and side effect management strategies. While cost is a consideration, choosing experienced oncologists ensures optimal treatment outcomes and appropriate monitoring throughout your therapy.