Ungewollte Leerzeichen innerhalb von Wörtern

\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
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\author{Miechen}
\begin{document}
\section*{Einleitung}
In der folgenden Medienarbeit setze ich mich mit dem Thema hormonell wirksame Chemikalien in Kosmetikprodukten auseinander. Inwiefern kosmetische Produkte den menschlichen Körper beeinflussen und welche negative Folgen dieser Einfluss auf die Gesundheit hat, ist momentan ein weit umstrittenes Thema in einigen Medien, die ihren Fokus hauptsächlich auf das Wohlbefinden und die Gesundheit legen. 
\end{document}

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