Through various studies, it has been confirmed that oral intake of collagen can have various benefits for the skin, such as increasing collagen density in the dermis, inhibiting collagen degradation [source], improving wrinkles, increasing skin moisture, and increasing skin elasticity [source] [source].
After evaluating various scientific evidence, including these human body application tests, the Ministry of Food and Drug Safety has recognized the skin health functionality of collagen ingredients such as 'Fish Collagen Peptide'. Therefore, through the intake of collagen, skin health can be promoted.
2. To increase absorption, should I eat low-molecular-weight collagen?
Collagen may have a different absorption rate depending on the molecular weight.
In general, when an ingredient is consumed in food, the molecular weight and absorption tend to be inversely related. In other words, the larger the molecular weight, the more difficult it is to absorb. The same goes for collagen.
According to human trials that studied the absorption rate of collagen peptides into the body according to their molecular weight, it can be seen that the intake of small molecule collagen peptides can increase the absorption rate of collagen in the blood compared to the intake of general collagen peptides. [source]
3. Should you eat it with elastin?
This is because collagen alone can provide skin-related benefits. However, the benefits of co-consuming collagen and elastin have also been reported, so elastin intake can be considered as a synergistic way to consume collagen.
As mentioned earlier, collagen alone has been reported to have a variety of skin-related benefits. However, if you do not feel a satisfactory effect despite taking collagen consistently, you may want to consider taking elastin.
Looking at the characteristics of collagen and elastin, collagen is a rigid protein with strong tension that is widely distributed not only in the skin but also in tissues such as bones, cartilage, and tendons. Therefore, it can be considered as a protein that acts as a skeleton related to the density of the skin.
Elastin, on the other hand, is a highly resilient protein. After a poke on the cheek or pinching the back of your hand, your skin can quickly return to its normal state. Although the absolute amount is smaller than collagen in the body, it is a very important component that supports collagen fibers and makes up connective tissue along with collagen.
In a 2008 clinical trial, it was reported that hyaluronic acid and skin fibroblasts were more stimulated in the collagen and elastin combination group than in the collagen single intake group. [source]
4. Should I take it with biotin?
While each ingredient can support skin health, they are not particularly synergistic.
Biotin is an essential component for the synthesis of fatty acids in the body, and a deficiency can cause dermatitis or rashes, as well as hair loss. Therefore, if a red flag is raised for skin and hair health due to biotin deficiency, you can expect improvement by supplementing with the right amount.
On the other hand, collagen can not only help with skin health, but also with hair health. One study reported that supplementation with collagen improved hair dryness and shine, [source] Another study reported that oral intake of bioactive collagen peptides had an effect on improving hair thickness. [source]
Therefore, if we take into account the function of the two ingredients, it is not necessary to take them together, but to what extent it is possible to consume them together.
5. You don't have to eat in your 20s, do you?
YES. That is right.
In fact, no one is required to consume collagen. However, as the breakdown of collagen in the body is accelerated with aging, it can be supplemented as needed.
Collagen is not an 'essential nutrient' that must be consumed. No matter how old you are. However, as we age or are exposed to ultraviolet rays, the breakdown of collagen in the body accelerates. In particular, a study on female hormones and skin aging found that postmenopausal women lost about 1.13% of their skin thickness per year, which is associated with collagen that declines by about 2% per year, and type 1 and 3 collagen, which is particularly related to the skin, can decrease by about 30% in the first five years after menopause. [source]
Therefore, if you are concerned about the health of your skin due to the breakdown of collagen in your body, you may want to consider supplementing with collagen in the form of food.
6.
YES. That is right.
This is because vitamin C is an antioxidant that can support overall skin health, as well as promote collagen production.
Free radicals attack the cells in the body and cause skin aging and overall aging of the body. Vitamin C is a representative antioxidant nutrient that has been recognized for its ability to protect cells from free radicals by acting as an antioxidant. What's more, studies have shown that vitamin C stimulates the production of collagen in the body. [Source] [Source] This is why vitamin C has been recognized for its ability to "form connective tissue and maintain function."
Therefore, collagen and vitamin C are compatible ingredients.
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