Conversation so far:
What were the Palme assassination rumors about ?
Ted Gärdestad was wrongly mentioned in the Swedish media as the 33-year-old suspect in Swedish Prime Minister Olof Palme's murder, which severely affected Gärdestad.
Who's assassination was Ted Gärdestad accused of ?
Ted Gärdestad was wrongly mentioned in the Swedish media as the 33-year-old suspect in Swedish Prime Minister Olof Palme's murder, which severely affected Gärdestad.
What was the consequence of Ted Gärdestad being wrongly mentioned in the Swedish media as the 33-year-old suspect in Swedish Prime Minister Olof Palme's murder?
Ted Gärdestad wrongly mentioned in the Swedish media as the 33-year-old suspect in Swedish Prime Minister Olof Palme's murder,  severely affected Gärdestad.

Question: how did it affect him?
Self-contained rewrite: how did being wrongly mentioned in the Swedish media as the 33-year-old suspect in Swedish Prime Minister Olof Palme's murder severely affect Ted Gärdestad?