Learn what to eat after prostate cancer treatment and during hormone therapy. UK specialist oncology dietitian Gina Giebner explains practical nutrition strategies for recovery, bone health, and long-term wellbeing.
After prostate cancer treatment many men ask the same question:
“What should I actually be eating now?”
Whether you have had surgery, radiotherapy, chemotherapy, immunotherapy or are on long-term hormone therapy, nutrition can play an important role in recovery and long-term health.
The good news is that healthy eating after prostate cancer doesn’t need to be complicated. A few consistent habits can make a real difference.
There is no single “prostate cancer diet”, but the evidence consistently supports a balanced whole-food eating pattern.
A simple way to structure meals is:
This approach helps support:
Aim to include a variety of colourful plant foods across the week — vegetables, fruits, herbs, spices, beans, and whole grains.
Maintaining a healthy weight is one of the most important lifestyle factors after prostate cancer.
Large international reviews of research have found that higher body fat is associated with an increased risk of advanced prostate cancer.
Healthy weight management supports:
Rather than strict dieting, focus on balanced meals, adequate protein, and limiting highly processed foods – see below.
Prostate cancer treatment — particularly hormone therapy (androgen deprivation therapy) — can lead to muscle loss.
Eating enough protein helps support:
Good protein options include:
A helpful strategy is to spread protein across meals, rather than having most of it in the evening.
Hormone therapy can reduce testosterone levels and increase the risk of:
Nutrition plays an important role in protecting bone health.
Key nutrients include:
Calcium, vitamin D, magnesium, protein
Good sources include:
Some research suggests very high calcium intake may be linked to prostate cancer risk, but the evidence remains limited and unclear.
It’s only advisable to take calcium supplements if your are told to by your Drs. It’s best to meet your calcium needs via your diet.
The goal is adequate calcium intake rather than excessive amounts.
Vitamin D
Vitamin D helps the body absorb calcium and supports bone and immune health.
In the UK, vitamin D deficiency is common due to limited sunlight exposure.
Many men benefit from discussing vitamin D testing with their GP. See my blog on vitamin D.
Men receiving hormone therapy may have a higher risk of cardiovascular disease.
Healthy fats help support heart and metabolic health.
Aim to include:
Oily fish provide omega-3 fats, which support heart health and reduce inflammation.
Plant foods provide fibre, vitamins, minerals, and beneficial plant compounds.
Aim for: at least five portions of vegetables and fruit daily
Examples include:
Tomatoes contain lycopene, which has been studied in relation to prostate health, although evidence remains inconclusive.
Foods high in sugar, salt, and unhealthy fats can contribute to:
Alcohol should be consumed within UK guidelines of no more than 14 units per week.
Many supplements are marketed for prostate health.
However, research has not shown consistent benefits from supplements such as:
Large studies show these supplements do not reduce prostate cancer risk or progression.
Always discuss supplements with your healthcare team.
Healthy eating after prostate cancer treatment is about supporting your body long-term.
Focus on:
If you are experiencing diarrhoea or urgency after treatment, bowel changes, weight loss or gain or fatigue and poor appetite, specialist dietetic support can help.
