How junk food popularity relies on marketing

Junk food – we know it's not good for us. It's loaded with sugar, unhealthy fats, salt, and a whole host of artificial ingredients. Yet, we find ourselves craving it, reaching for that bag of chips or a can of soda, time and time again. So how does junk food go from being something we know is bad to something we find downright irresistible? The answer lies in a powerful force: marketing.