by Amanda MacMillan. Nuts are nature's way of showing us that good things come in small packages. These bite-size nutritional powerhouses are packed with heart-healthy fats, protein, vitamins, and minerals.Here's a look at the pros and cons of different nuts, as well as the best and worst products on supermarket shelves today.nd although nuts are a healthy choice by themselves, they'll quickly become detrimental to any diet when paired with sugary or salty toppings or mixes. Next: Best nuts for your diet. Get the latest health, fitness, anti-aging, and nutrition news, plus special offers, insights and updates from Health.com!