Short answer: What you eat affects sperm quality. Research shows that a Mediterranean-inspired diet – rich in vegetables, fruits, fish, nuts, and olive oil – is associated with better sperm concentration and motility, likely due to antioxidants counteracting oxidative stress. Highly processed foods, trans fats, and high alcohol consumption have the opposite effect.
Why does diet affect sperm?
Oxidative stress is one of the most common causes of impaired sperm quality. Antioxidants from the diet can counteract this, and polyunsaturated fatty acids are needed for sperm cell membranes. Diet thus affects both sperm count, motility, and morphology.
What does the research say?
A systematic review of studies on thousands of men found that greater adherence to a Mediterranean diet was associated with higher sperm concentration and better motility. The effects are linked to the diet's antioxidants and anti-inflammatory properties. The studies are largely observational, so the results should be interpreted with some caution.
Practical advice
Eat plenty of vegetables, fruits, legumes, whole grains, nuts, fish, and olive oil. Make sure you get enough antioxidants (e.g., vitamins C and E, zinc, and selenium) and omega-3, and cut down on trans fats, processed meat, and sugar. Other lifestyle factors also play a role: smoking, high alcohol consumption, overweight, and heat can negatively affect sperm.
Frequently asked questions
How quickly will I notice a change?
Sperm mature over approximately three months, so allow at least that much time.
Does the man also need to think about his diet?
Yes – approximately half of all involuntary infertility has a male factor, so the man's diet and lifestyle are just as important.
This article is general information and does not constitute medical advice. Consult healthcare providers for questions about fertility.
Sources
- Influence of the Mediterranean diet on seminal quality – a systematic review (2024). Frontiers in Nutrition.