Collagen Research

Collagen in Skin

In 2015, researchers from France, Belgium, and Japan found that in their two placebo-controlled clinical trials of daily collagen supplementation for 8 weeks, benefits were quite obvious. Skin hydration improved significantly after 8 weeks, while the dermal layer of the skin increased significantly after only 4 weeks. Both of these effects from the collagen supplement lasted more than 12 weeks.

In another study, a hydrolyzed collagen supplemental drink also containing hyaluronic acid and essential vitamins and minerals given to postmenopausal women had antiaging properties. The women showed significant and positive effects on skin wrinkling, elasticity, and hydration.9 

For cellulite: Collagen supplements can also improve the appearance of cellulite. In a German and Brazilian study in 2015 where doctors gave 105 women who had moderate amounts of cellulite an oral supplement of 2.5 bioactive collagen peptides over the course of six months, the women had greater density in their dermal skin layer, significant reduction in cellulite, and a reduced waviness in their thighs. The effects were more pronounced in women who were not overweight.6 

Collagen in Hair

Hair methionine contains sulfur, which can build chains, which themselves create networks, and this is exactly what happens in hair and nails. Methionine can therefore considerably strengthen the hair structure and nails. Methionine can also help against hair loss. In 2006 at a dermatological congress in Florence, the results of a study carried out on patients with hair loss was released. The 30 subjects were divided into two groups. One group was administered a preparation of amino acids and vitamin B complex, and the other was given a placebo. The result was that after half a year, the portion of hair in the growth phase was 10 percent higher in the methionine group than in the placebo group.1

Collagen for Sleep

Glycine supplements also provide benefits. Doctors tested the effects of 3 grams of glycine supplement on insomnia patients and found positive effects on sleep deprivation. The patients took the supplement before bed and were put in a position to be sleep-deprived for three days. The supplement reduced their fatigue and sleepiness during the day after the loss of sleep. The glycine supplement did not affect the circadian rhythms. The scientists concluded that the glycine affected a part of the brain called the superchiasmatic nucleus and subsequently increased the levels of arginine and vasopressin as well as vasoactive intestinal polypeptide. This shows us that other parts of the body are also affected by glycine supplements.10

Collagen for Joints

In one randomized, controlled trial on the efficacy of a collagen supplement, Spanish researchers found that when 250 volunteers were given 10 grams of collagen supplement daily for six months, their knee arthritis pain improved. The people with the most severe deterioration of the knee and the least intake of meat in their diet benefited the most. They concluded that collagen supplements are safe and effective.7

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