Yes, fiber does count as a type of carbohydrate. However, it differs from other carbs because the human body cannot digest it. Fiber falls into two categories: soluble, which can dissolve in water, and insoluble, which cannot. Both types are beneficial for digestive health. While soluble fiber can help lower glucose levels and blood cholesterol, insoluble fiber aids in constipation and helps maintain bowel health. Although fiber is counted in the total carbohydrate content of food, it has a minimal impact on blood sugar levels. Thus, when calculating net carbs, many people subtract the amount of fiber from the total carbs because the body does not absorb it in the same way as it does with sugars and starches.

Fiber works by moving bulk through the intestines, aiding in digestion and excretion. Soluble fiber, found in oats and fruits, absorbs water to form a gel-like substance, slowing digestion and helping to stabilize blood sugar. Insoluble fiber, found in whole grains and vegetables, adds bulk to stool and helps it pass more quickly and easily, preventing constipation. Both types are crucial for digestive health, but they also play roles in heart health by lowering cholesterol and reducing the risk of heart disease. A balanced diet with a mix of soluble and insoluble fiber is ideal for maintaining digestive health and preventing chronic diseases.

Nylon and polypropylene are both synthetic polymers, widely used in various applications. Nylon, or polyamide, is known for its strength, elasticity, and resistance to abrasion and chemicals, making it ideal for textiles, automotive parts, and more. It absorbs water, which can affect its properties. Polypropylene, on the other hand, is noted for its chemical resistance, fatigue resistance, and insulating properties. It does not absorb water like nylon, making it more suitable for applications where moisture is a concern, such as outdoor furniture or containers. Polypropylene is also lighter than nylon, which can be an advantage in certain applications. However, nylon's durability and heat resistance often make it the material of choice for high-stress or high-temperature environments. Choosing between nylon and polypropylene depends on the specific requirements of the application, including stress levels, environmental conditions, and desired product longevity.