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Selenium – A Vital Dietary Component for Men

Mineral Selenium Fun
Mateusz Pawlak Author
2026-03-25 Date
3 min. read article.read_time
7 Chapters
Selenium is a mineral element that is crucial for the proper functioning of the body, especially in men. Its significance in the diet is very high as it fulfills critical roles in the body. Although research on selenium is ongoing, scientists concur on one point – selenium deficiency can lead to muscle weakness, increased cancer risk, heart disease, and fertility issues. Therefore, it is important that selenium is provided in small, safe amounts, as an excess can result in toxicity and unwanted side effects.

Selen – besondere Eigenschaften

Selen wurde 1817 von dem schwedischen Wissenschaftler Jöns Jacob Berzelius entdeckt, aber seine gesundheitlichen Vorteile wurden erst viele Jahre später nachgewiesen. Erst 1950 bestätigten Forscher aus den Vereinigten Staaten und Deutschland seine antioxidative Wirkung. Die Hauptquelle für Selen sind Meeresfrüchte wie Garnelen, Krabben und Lachs. Bei Pflanzen ist der Selengehalt variabel und hängt von der Menge im Boden ab. Auch Paranüsse und brauner Reis sind reich an diesem wertvollen Mineralstoff. Das amerikanische Amt für Lebensmittel und Ernährung (FNB) hat festgelegt, dass die tägliche Selenaufnahme aus Lebensmitteln oder Nahrungsergänzungsmitteln bei Erwachsenen 400 µg nicht überschreiten sollte.

Bösartige Neubildungen

Eine wissenschaftliche Studie ergab, dass Männer mit einem optimalen Selenspiegel im Blut ein erheblich geringeres Risiko hatten, an Prostatakrebs zu erkranken, als Personen mit einem niedrigeren Spiegel dieses Elements. In einer der detaillierteren Studien beobachteten Wissenschaftler einen Rückgang um 65% bei der Anzahl von Fällen von fortgeschrittenem Prostatakrebs bei Personen mit einem höheren Selenspiegel im Blut. Darüber hinaus wurde gezeigt, dass dieser Faktor das Risiko einer Erkrankung an Lungenkrebs, Dickdarmkrebs und Hautkrebs verringert. Forscher vermuten, dass Selen die natürliche Immunabwehr des Körpers gegen Krebszellen erhöht und die Bildung von Blutgefäßen hemmt, die die Entstehung von Metastasen fördern.

Fruchtbarkeit

Ein Selenmangel ist mit Unregelmäßigkeiten im Sperma und einem erhöhten Risiko für frühen Schwangerschaftsverlust verbunden. Es wurde festgestellt, dass eine angemessene Konzentration dieses Elements die Qualität von Spermien verbessert. Bei Menschen mit niedrigerem Selenwert im Blut wurde eine geringere Anzahl von Spermien festgestellt. Außerdem haben Studien gezeigt, dass Selen das Risiko von Mutationen bestimmter Chromosomen verringern kann, was die Hauptursache für Geburtsfehler und Fehlgeburten ist.

Vermeidung von Schäden durch freie Radikale

Selen unterstützt die Vermeidung von DNA-Schäden der Zellen, die durch die Ausbreitung freier Radikale verursacht werden. Gewährleistung einer angemessenen Selenaufnahme in der Ernährung kann dazu beitragen, vorzeitiges Altern zu vermeiden.

Herzkrankheiten vorbeugen

In zahlreichen wissenschaftlichen Studien wurde festgestellt, dass schwerwiegende Herzerkrankungen bei großen Tieren (Rindern etc.) mit Selenmangel in Zusammenhang stehen. Sehr niedrige Spiegel von Coenzyme Q10 (einer Schlüsselverbindung für die korrekte Funktion des Herzens) wurden bei Tieren mit Herzproblemen beobachtet. Ein angemessener Spiegel dieser Verbindung hängt von Selen und Vitamin E ab. Ein Mangel an dieser Verbindung erhöht das Risiko von Herzkrankheiten aufgrund von oxidativem Stress, der durch freie Radikale verursacht wird. Andere Studien haben gezeigt, dass oxidiertes LDL (ein Teil des LDL-Cholesterinspiegels, dessen zu hohes Niveau ein anerkannter Risikofaktor für Atherosklerose ist) eine wichtige Rolle bei der Entwicklung von Herzerkrankungen spielt. Ein angemessener Spiegel an Selen schützt vor den negativen Auswirkungen von LDL und erhöht den Spiegel an HDL (der gewünschten Fraktion des Cholesterins).

Gelenkschmerzen

Es wurde ein reduzierter Selenwert im Blutplasma bei Personen mit Gelenkschmerzen festgestellt. Gelenkschmerzen sind eine langwierige Erkrankung, die Schmerzen, Steifheit, Schwellungen, Verformungen und Bewegungseinschränkungen der Gelenke verursacht.

Geisteszustand

Ein niedriger Selenwert wird ebenfalls mit einer Verschlechterung der kognitiven Funktionen bei älteren Menschen in Verbindung gebracht, sowie mit Verwirrung, Depressionen, Müdigkeit und Angstzuständen. Neueste Studien zeigen, dass ein angemessener Selengehalt im Körper positive Auswirkungen auf Stimmung, Verhalten und kognitive Funktionen haben kann, was auf seine Rolle bei der Regulierung der Schilddrüsenfunktion zurückzuführen ist. Es ist daher sinnvoll, auf eine ausgewogene Ernährung zu achten und vor der Einnahme von Nahrungsergänzungsmitteln mit einem Arzt zu sprechen.
Mateusz Pawlak

Mateusz Pawlak

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