anregen
to suggest
To make a proposal or put an idea up for discussion.
Ich möchte anregen, dass wir das Thema in der nächsten Sitzung besprechen.
I would like to suggest that we discuss the topic in the next meeting.

to suggest / stimulate
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to suggest
To make a proposal or put an idea up for discussion.
Ich möchte anregen, dass wir das Thema in der nächsten Sitzung besprechen.
I would like to suggest that we discuss the topic in the next meeting.

'Anregen' is a separable verb. The prefix 'an-' goes at the end in a main clause. In subordinate clauses and in the infinitive with 'zu', the verb stays together.
Diese Diskussion regt viele neue Ideen an.
This discussion stimulates many new ideas.
When 'anregen' inspires a person to do something, the structure 'jemanden (accusative) zu etwas (dative) anregen' is used. This is a fixed pattern.
Der Film regte sie zum Nachdenken an.
The film prompted her to think.
When making a suggestion, a subordinate clause with 'dass' or an infinitive construction with 'zu' often follows. The verb 'anregen' introduces the action or idea.
Die Opposition regte an, das Gesetz zu überarbeiten.
The opposition suggested revising the law.
In the meaning 'stimulieren' (to stimulate), 'anregen' is often combined with physical or mental processes. Typical nouns are 'der Stoffwechsel' (metabolism), 'der Appetit' (appetite), 'die Fantasie' (imagination), or 'die Diskussion' (discussion).
Kaffee am Morgen regt den Stoffwechsel an.
Coffee in the morning stimulates the metabolism.
to recommend
'empfehlen' and 'anregen' can both have to do with making a suggestion. You use 'empfehlen' when you think something is good and advise someone to do it. The direction is often clear: the other person is meant to choose or do something. 'anregen' is more open. You bring an idea into the conversation or get someone to think about something. It does not have to be a firm recommendation yet. Learners may confuse the words because both occur with tips and suggestions. As a guide: 'empfehlen' is advice, while 'anregen' is more of an impulse or an idea to think further about.

Beim Einkaufen regt Ida an, weniger Plastik zu verwenden.
While shopping, Ida suggests using less plastic.
Die Chefin empfiehlt im Gespräch einen früheren Start für das Sommerprojekt.
In the conversation, the boss recommends an earlier start for the summer project.