悪玉菌(あくだまきん)

あくだまきん
noun
bad bacteria (in the gut)
health
1. bad bacteria; harmful gut bacteria
Intestinal bacteria thought to harm health, for example by producing toxins or causing putrefaction. A popular rather than scientific term.
悪玉菌(あくだまきん)が増(ふ)える。
Bad bacteria multiply.
腸内(ちょうない)の悪玉菌(あくだまきん)を減(へ)らしたい。
I want to reduce the bad bacteria in my gut.
肉(にく)ばかり食(た)べていると悪玉菌(あくだまきん)が増(ふ)え、便秘(べんぴ)や肌荒(はだあ)れの原因(げんいん)になるといわれる。
Eating nothing but meat is said to increase bad bacteria and cause constipation and rough skin.

Common in health articles and yogurt advertising.

Related words

  • 善玉菌(ぜんだまきん): good bacteria, such as lactic acid bacteria and bifidobacteria
  • 日和見菌(ひよりみきん): "fence-sitter" bacteria that side with whichever group dominates
  • 腸内(ちょうない)細菌(さいきん): gut bacteria

Etymology

悪玉(あくだま) (villain, bad guy) + 菌(きん) (bacteria). The same 悪玉(あくだま) appears in 悪玉(あくだま)コレステロール (LDL cholesterol).

Related Words

Related: 善玉菌(ぜんだまきん) (good bacteria, such as lactic acid…)
general
Added 2026.10.20 22:05 · Revised 2026.10.20 22:07
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