Signs of a healthy diet include a balance of macronutrients like carbohydrates, proteins, and fats, alongside adequate intake of micronutrients such as vitamins and minerals. Regular consumption of a variety of fruits, vegetables, whole grains, and lean proteins is essential. Additionally, a healthy diet often includes limited sugar and saturated fats while promoting hydration. Observing physical indicators like energy levels, digestion, and skin health can also suggest a well-rounded nutritional intake. Overall, a healthy diet supports physical and mental well-being.