Tahini does the work
Tahini is the most versatile format: loosen it with lemon juice and water and it becomes a dressing, a sauce or a dip. One jar covers weeks of dinners, and the sesame comes along with it.
Zinc and Selenium for Sperm Quality
Zinc and selenium are the two minerals that dominate male fertility nutrition writing in the UK, and for understandable reasons: both are needed for normal reproductive function, and both are obtainable from ordinary food. This page explains why they keep coming up, which foods provide them, and how to include those foods without turning your kitchen into a pharmacy.
Why these two minerals keep appearing
The British Nutrition Foundation describes selenium as needed for normal sperm production and development. Zinc plays a comparable role in normal body function, and UK fertility nutrition guidance repeatedly names zinc-rich foods when discussing sperm quality. That combination, a clear nutritional requirement plus a clear food source, is why the two minerals have become the standard entry point for this topic. They are not trendy. They are just well documented.
It also explains the shape of the advice. Guidance talks about foods rather than nutrients in isolation, so pumpkin seeds, sesame seeds, Brazil nuts, poultry and fish turn up again and again across different leaflets, dietitian notes and clinic handouts — each one an ordinary item you can put on a plate this week.
Concentrated sources ask for small portions: two or three Brazil nuts is a realistic daily amount, not a bowlful.
Selenium: what it does and where it comes from
Selenium is commonly linked to Brazil nuts, fish, meat, poultry and eggs. Brazil nuts are the famous source because they are so concentrated, which is also why portion size matters: two or three nuts is a realistic daily amount, not a bowlful. Eggs at breakfast, poultry at dinner, tinned fish at lunch and a couple of Brazil nuts in between covers the ground comfortably. UK soils are relatively selenium-poor, which is part of why the guidance focuses on specific foods rather than on general "eat more plants" advice.
That last point is worth repeating because it changes how you read the rest of this page. When the soil is low in a mineral, plants grown in it carry less — so guidance points at the specific foods that reliably do carry it and leaves the rest alone.
Zinc: the seed-and-shellfish story
Zinc-rich foods is the phrase you will see most often. Here is where it actually points.
Pumpkin seeds
Sesame seeds
Lentils
Wholegrains
Shellfish
Poultry
Pumpkin seeds are regularly cited in UK fertility nutrition guidance as a useful source of zinc, and sesame seeds are specifically mentioned in BDA fertility guidance for the same reason. Beyond seeds, lentils, wholegrains and shellfish also feature. For anyone eating plant-forward, seeds carry most of the load simply because they are easy and cheap. A tablespoon of pumpkin seeds and a tahini dressing on vegetables will get you further than an occasional heroic portion.
Do pumpkin seeds really matter for zinc?
Short answer: they matter as part of a pattern, not as a fix. Pumpkin seeds appear in dietetic advice on foods that may support sperm quality precisely because they are a practical, regular way to include zinc. Nobody is suggesting a handful changes anything overnight. What matters is that zinc-containing foods show up most days, which is far more achievable with seeds in the cupboard than with a supplement you forget to reorder. Pair them with lentils, wholegrains and shellfish and you have covered the guidance's own examples.
Food first
Supplement thinking
Foods you already eat, named by guidance
A dose you decide on your own
Portion size stays visible: two or three Brazil nuts
Concentration easy to overshoot
Adds to meals you are already cooking
Another item to remember and reorder
Zinc and selenium arrive together with other nutrients
One nutrient, read on its own label
Food-first is a preference this site holds because the guidance holds it — not a rule that fits everybody.
Sesame seeds, tahini and plant-forward zinc
Sesame seeds are a genuinely useful addition for anyone eating mostly plant-based, and not only because of the zinc.
Sesame as a dinner habit
Sesame also appears in baked foods and stir-fries without any effort. The guidance frames it as part of variety rather than a lone solution, which is the right way to read it. If pumpkin seeds are your breakfast habit, sesame can be your dinner habit, and the two together cover more days of the week.
Should you just take a supplement?
Often the first question, and a fair one. This site takes a food-first position because the guidance itself does: selenium is commonly presented as a nutrient to obtain from food rather than supplements, and the foods involved are ordinary.
That said, food-first is a preference, not a rule for everyone. If you have a diagnosed deficiency, a restricted diet, or you are being treated for a fertility issue, that is a conversation for your GP or a registered dietitian, not for a website. We cover food because food is what we can describe accurately.
Building a week around these minerals
A rough pattern: seeds at breakfast most days, oily fish once or twice a week, poultry or eggs several times, a small portion of Brazil nuts on the days you remember, and shellfish occasionally if you eat it. That is not a strict plan and it does not need tracking. It is simply the shape that UK guidance implies when you read it as a whole rather than as a list of individual nutrients. The foods overlap, the minerals overlap, and the week still looks like a normal week.
Most days, breakfast
Pumpkin seeds on porridge, yoghurt or toast
Once or twice a week
Oily fish, tinned or fresh
Several times a week
Eggs and poultry
On the days you remember
Two or three Brazil nuts
Occasionally, if you eat it
Shellfish
Dinner, most weeks
Tahini dressing on lentils and vegetables
Six lines, no tracking, no separate shopping trip.
Realistic expectations
Sperm production is a cycle measured in weeks, so nutritional change is usually discussed over months rather than days. Anyone promising fast results from a mineral is overselling.
What a food-first approach realistically delivers is a diet that includes the nutrients the guidance names, in amounts that come from meals rather than from guesswork. If you are trying to conceive, that is worth doing alongside medical advice, not instead of it. Modest, consistent and boringly sustainable is the honest description.
Questions we get about these two minerals
How many Brazil nuts are too many?
Brazil nuts are concentrated in selenium, so a small daily portion of two or three is the realistic reference point rather than a handful. Fish, meat, poultry and eggs also contribute, which is why variety is the guidance's preferred framing.
Are pumpkin seeds enough on their own for zinc?
They are one of the most frequently cited zinc sources in UK fertility nutrition guidance, but they are discussed as part of a wider nuts-and-seeds pattern alongside sesame seeds, lentils, wholegrains and shellfish.
Do I need a supplement to get these minerals?
The guidance commonly presents selenium as something to obtain from food, and the food sources are everyday items. If you have a diagnosed deficiency or a restricted diet, speak to your GP or a registered dietitian about what applies to you.
How long before diet changes matter?
Sperm production is a cycle measured in weeks, so nutrition discussions usually run over months. Sustainable eating over that timescale is more useful than an intense short-term effort you abandon.
Keep it in the cupboard, not on a shelf of bottles
If this page has done its job, the next step is small: put pumpkin seeds and sesame seeds where you will actually see them, keep a short list of the selenium foods on the fridge, and compare that against what you already cook in a normal week.
Strong Mind Your Body · 42 High Street, London, EC1A 4JN, United Kingdom · Monday to Friday, 9:00 AM – 6:00 PM. This page is general food and nutrition information for adults in the UK, not medical advice. If you are being treated for a fertility issue or have a diagnosed deficiency, speak to your GP or a registered dietitian.