Collagen: More Than Just Skin Deep
October 01, 2025
Collagen, a definite buzzword in wellness today, is far more important than just a beauty trend. It plays a critical role in whole-body health. Collagen is the most abundant protein in the human body, assisting in the formation of the structure, strength, and elasticity of our connective tissues. This formation includes skin, muscles, bones, and joints. We naturally produce collagen, but production decreases as we age. This decrease leads many to seek out good food sources as well as supplements to support healthy levels of nutrients. There are 28 different types of collagens, but types 1-4 are the most common. Type 1 makes up the connective tissues, which comprise about 90% of the collagen found in the human body. Type 2 is found in joints, type 3 compromises blood vessels, and type 4 is part of organs.
A key fact you may not be aware of is that collagen plays a crucial role in gut function and nutrient absorption. The connections in the intestinal lining between the microvilli are made of collagen. These microvilli guard the tiny gaps in the intestinal wall. They are in place to allow water and nutrients to pass through. Sometimes, these junctions become damaged, allowing harmful substances to cross the barrier. You can actually repair damaged microvilli by adding more collagen to your diet or taking supplements. Collagen is not only involved in maintaining the microvilli but also plays a role in nutrient absorption.
Here are the key health benefits of collagen:
Supports Healthy Skin and Elasticity
Collagen provides the structure to keep skin smooth, firm, and hydrated. As collagen levels decline with age, fine lines and sagging skin become more noticeable. Studies suggest that collagen supplements can improve elasticity and increase moisture, reducing the visible signs of aging.
Promotes Joint Comfort and Flexibility
Collagen is a key component of cartilage, supporting joint health and flexibility. Cartilage is the tissue that cushions the joints. Supplements may help reduce stiffness, improve mobility, and support joint health.
Strengthens Bones and Muscles
Bones are primarily composed of collagen, which lends them both strength and flexibility. It also helps maintain bone density.
Supports Gut Health
Collagen contains amino acids such as glycine and glutamine, which play a crucial role in maintaining a healthy digestive lining. These amino acids support gut integrity and reduce inflammation, thereby contributing to improved digestion and enhanced nutrient absorption.
Improves Nail and Hair Strength
Collagen may promote thicker hair and stronger nails.
How can you boost collagen naturally?
- Food Sources: Bone broth, chicken, fish with skin, and egg whites are rich in collagen or its building blocks.
- Vitamin C-Rich Foods: Citrus, berries, and leafy greens help the body produce collagen.
- Lifestyle Habits: Avoiding smoking, excess sun exposure, and high sugar intake helps protect natural collagen stores.
- Supplements: Hydrolyzed collagen peptides are easily absorbed and can be mixed into drinks or smoothies.
Contact FitLife today to determine if your diet provides enough collagen and whether supplementation may benefit you!
Diet and Nutrients , Dietary Supplements, Blog