There are several antonyms for the word "un-healthy." Some of the most commonly used antonyms are "healthy," "wholesome," "nutritious," "beneficial," "nourishing," and "energizing." These words describe something that is good for your body, mind, and overall well-being. A healthy diet consisting of fruits, vegetables, lean protein, and whole grains can have numerous health benefits, including weight control, improved heart health, and increased energy. Incorporating regular exercise into your routine can also improve your physical health and mental well-being. Making these positive lifestyle changes can lead to a happier, healthier you.