English version comes after Japanese.
#平均寿命と#平均余命は別物。厚生労働省は各年代での#平均余命を出していますが、例えば70歳の男性は#平均余命が15歳ほどで、#平均寿命である80歳よりも長くなります。今の自分の年齢での#平均余命が何歳なのかを知っておくといいですね。
There're 2 different life expectancy. The one you see the most is how long you're expected to live at birth. In case of Japanese male, it's about 80 years old. The other is how many more years you're expected to live at a certain age. For example, if you're 70 years old Japanese male, you're expected to live 15 more years until 85 which is longer than the other.