No, supplements cannot replace nutrition. They are designed to augment nutrition, not substitute it. They can compensate for deficiencies in your diet, but they can't replace the macronutrients, vitamins, minerals, and micronutrients you get from food. It's important to remember that there's no pill replacement for sunshine, exercise, social connection, sleep, or simply getting smarter. A phrase to keep in mind is "better living through chemistry still requires better living." So, while supplements can be beneficial, they should be used in conjunction with a healthy diet and lifestyle, not as a replacement.