Simplify the following text for a Grade 11 native English-speaking person.
Original: Werner Huttig of the Nazi Party 's Rassenpolitisches Amt ( Office of Racial Politics ) said that a smoking mother 's breast milk contained nicotine , a claim that modern research has proven correct .
Simplified: Werner Huttig of the Nazi Party 's Rassenpolitisches Amt ( Office of Racial Politics ) claimed smoking mothers ' breast milk contained nicotine .