The phrase "poor dietary habits" refers to an individual's eating patterns that are considered unhealthy or not conducive to maintaining good health. This can include a lack of variety in food choices, excessive consumption of certain types of food (such as those high in sugar, salt, or saturated fats), and insufficient intake of essential nutrients like vitamins and minerals. Poor dietary habits can lead to various health problems such as obesity, heart disease, type 2 diabetes, and other chronic conditions.