I have a question about this construction: (This is from NHK Easy news)

https://www3.nhk.or.jp/news/easy/k10011625431000/k10011625431000.html

寝る時間が足りないと、心の病気になったり、太りすぎたり、血圧が高くなったりする心配があります.

I want to know the use of "ーたり" in this sentence. Is this a conjugation of some sort if you are listing items? Also, in 高くなったりする, why did it become たりする?

Insights welcome

According to "A Dictionary of Basic Japanese Grammar", page 458:

~たり~たりする A phrase which expresses an inexhaustive listing of actions or states.

Example: 私達は歌ったり、踊ったりした。 We did things like singing and dancing.

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