1. May ease joint pain
As your cartilage weakens and deteriorates with age, you may start to feel stiff, achy joints. It’s possible that upping your collagen intake may help reduce joint pain and alleviate symptoms of arthritis
In a 2009 study, participants took collagen supplement for 90 days. Results showed that osteoarthritis symptoms decreased by 40 percent while the severity of symptoms dropped by an impressive 33 percent.
In an older study from 1993 with the same collagen supplement, participants with severe saw a reduced number of swollen and tender joints — 4 out of 60 participants also experienced complete remission. This supplement was undenatured, meaning that the amino acids weren’t broken down as a result of processing and exposure to high heat.
2. May reverse skin aging
One of the most well-known benefits of collagen is its ability to promote glowing, vibrant skin. This essential protein provides elasticity to the skin, helping it to appear more youthful and healthy. But as you get older and collagen production declines, fine lines, loose skin, and dryness can occur. So what happens if you increase your collagen intake with supplements?
A study published in 2014 randomly chose 46 of 69 women, ages 35-55 years old, to take a natural collagen supplement. The rest of the group took a placebo. The women who took the collagen showed an improvement in skin elasticity within four weeks.
The same manufacturer also conducted another study in 2014 with the same supplement, which significantly reduced wrinkles after just eight weeks.
3. Helps build muscle and burn fat
Collagen is a major component of muscle tissue, so it should come as no surprise that it can have a big impact when it comes to building muscle mass. Plus, collagen also contains a concentrated amount of glycine, an amino acid involved in the synthesis of creatine. This can provide muscles with the fuel needed to power through your workout. So what happens when you add collagen to your workout routine?
There’s not much research on collagen and exercise, but a study in 2015 looked at collagen supplements in 53 older males with sarcopenia, a condition where you lose muscle mass due to aging. After 12 weeks, those who took supplements along with resistance training saw an increase in fat loss and muscle strength more than the placebo group.
4. May reduce cellulite
Besides keeping your skin healthy and glowing, collagen may also help improve the appearance of stubborn cellulite. Celluliteis when the layer of fat under the skin pushes up against the connective tissue, creating a dimpled or lumpy appearance on the skin.
Another study was sponsored in 2015 by manufacturers to see what type I collagen would do for cellulite. They randomly assigned 105 women, ages 24-50, to take collagen peptides for six months. Those who did demonstrated a clear improvement in skin texture and waviness.
While it seems promising, more studies are needed to confirm if collagen helps reduce cellulite appearance. A 2015 review found that only acoustic wave therapy had potential benefit for treating cellulite, however, collagen may not have been included.
But remember, cellulite is incredibly common — an estimated 80 to 90 percent of women have it. It’s a natural part of aging and skin formation and not a cause for concern.
5. May improve digestive health
Collagen is in the gut’s connective tissue and can help support and strengthen the protective lining of your digestive tract. This is critically important because alterations in the barrier function of your intestine, also known as leaky gut syndrome, can allow particles to pass into the bloodstream. This may result in inflammation.
In fact, an older study from 2003 looked at 170 individuals with inflammatory bowel disease and found that they were more likely to have lower levels of serum collagen. So the current theory is that by increasing your intake of collagen, you could help build up the tissues that line your gastrointestinal tract and promote better gut health. However, current research is limited on the direct effects of collagen supplementation on the digestive system.