healthiness

uncountable usually countable

(uncountable) The state or quality of being healthy. / (countable) The product or result of being healthy.

Japanese Meaning

健康な状態、健康であることの質 / 健康であることの結果、産物

Regular exercise contributes significantly to the healthiness of your lifestyle.

定期的な運動は、生活習慣の健康度に大きく寄与します。

Sense（1）

(uncountable) The state or quality of being healthy.

Sense（2）

(countable) The product or result of being healthy.

healthinesses

（ plural ）