niezdrowe

In a sentence

• Słodycze w dużych ilościach są niezdrowe dla organizmu.

  Sweets in large quantities are unhealthy for the body.

  Here, 'niezdrowe' is used as an adjective modifying 'słodycze', indicating that consuming them excessively has negative effects on health.

• Niezdrowe nawyki mogą prowadzić do problemów zdrowotnych.

  Unhealthy habits can lead to health problems.

  In this case, 'niezdrowe' describes 'nawyki' as customs or behaviors that might adversely affect one's well-being.

• Ten sposób odżywiania się jest bardzo niezdrowy.

  This way of eating is very unhealthy.

  Here, 'niezdrowy', related to 'sposób', specifies that the eating method is detrimental to health.