Benign prostate enlargement is a non-cancerous increase in the size of the prostate gland. It becomes increasingly common after 50 and can narrow the urethra, producing a weak or interrupted urine stream, hesitancy, straining, incomplete emptying, dribbling, urgency and more frequent urination, especially at night.
An enlarged prostate is not caused by prostate cancer and does not itself increase cancer risk, but the symptoms can overlap. Assessment may include examination, urine and blood tests, a symptom score and discussion of a prostate-specific antigen (PSA) test. PSA can be raised for several reasons and is not a diagnosis on its own.
When to seek help
Recognising serious symptoms
See a GP when urinary symptoms are new or troublesome. Seek urgent help if you cannot pass urine, have blood in the urine, develop fever with urinary symptoms, or have severe lower-abdominal pain. Retention and recurrent infection can damage the bladder or kidneys if ignored.
Practical measures include reducing evening drinks without becoming dehydrated, moderating alcohol and caffeine, emptying the bladder before long journeys, and checking whether medicines such as some decongestants worsen symptoms. Avoid straining. Bladder training and a “double void”—waiting briefly and trying again—may help.
Medicines can relax the prostate and bladder outlet or gradually shrink the gland. Procedures and surgery are available when symptoms are severe, complications occur or medicines do not help. Treatment choice should reflect symptom burden, prostate size, side effects and personal priorities.
Useful supplements
Supplements should be selected for the individual rather than used automatically. Product directions and advice from an appropriately qualified professional should take precedence over general information.
| Supplement | Effects |
|---|---|
| Zinc | Provides a mineral required for normal prostate and reproductive tissue function. |
| Krill oil or marine fish oil, sometimes with evening primrose oil | Provides fatty acids used in signalling compounds that support normal inflammatory regulation. |
| Magnesium citrate | Supports normal muscle, nerve and circulatory function and enzymes involved in metabolism. |
| Potassium citrate | Supports normal fluid balance, nerve signalling and muscle function. |
| Saw palmetto extract | Contains plant compounds intended to influence hormone metabolism associated with prostate growth. |
| Antioxidants including vitamins C and E, beta-carotene and selenium | Help protect cells from oxidative damage generated during normal metabolism and inflammation. |
| Amino acids including glycine, alanine and glutamic acid | Described in the source as helping to improve urinary flow. |
Large, well-designed studies have not shown saw palmetto to improve benign prostate symptoms reliably. High-dose zinc may cause copper deficiency, potassium can be dangerous with kidney disease or certain heart and blood-pressure medicines, and antioxidant supplements do not prevent prostate cancer. Fish oils and vitamin E may affect bleeding.
Tomatoes and other lycopene-rich foods can be part of a healthy diet, but no single food shrinks the prostate. The most valuable nutritional approach supports general cardiovascular and metabolic health while ensuring that persistent or changing urinary symptoms receive an appropriate medical assessment.
Looking for personalised nutrition and lifestyle support? An FNTP member may be able to help you explore an approach suited to your individual needs. Find an FNTP practitioner.
This article is for general education and does not replace individual medical advice, diagnosis or treatment.
