This is the 12786th most frequent Polish word.
niezdrowe
Unhealthy.
Here, 'niezdrowe' is used as an adjective modifying 'słodycze', indicating that consuming them excessively has negative effects on health.
Słodycze w dużych ilościach są niezdrowe dla organizmu.
Sweets in large quantities are unhealthy for the body.
In this case, 'niezdrowe' describes 'nawyki' as customs or behaviors that might adversely affect one's well-being.
Niezdrowe nawyki mogą prowadzić do problemów zdrowotnych.
Unhealthy habits can lead to health problems.
Here, 'niezdrowy', related to 'sposób', specifies that the eating method is detrimental to health.