Benefits of Collagen Supplements | HealthNews

Wrinkles are undeniably one of the most visible signs of aging. The culprit is a lack of collagen. Collagen gives the skin its smoothness and elasticity, but unfortunately, collagen production declines with age. In effect, the skin gradually loses its rigidity, resulting in sagging and wrinkles.

In addition, more disorders affecting the
internal system are related to aging-associated collagen depletion. Hence,
people have explored strategies to boost their collagen levels to
prevent collagen-associated disorders linked to aging. In this article, we
discuss what collagen is and the benefits of collagen supplementation.

What is collagen?

Collagen
is a structural protein and the main component of the human body’s connective
tissues, including the bones, tendons, cartilage, ligaments, muscles, and
organs. It is the most abundant protein in mammals, composing around
30% of the entire body’s protein mass. Repeating subunits of amino acids — glycine, proline, hydroxyproline — and other
amino acids make up the collagen protein.

Different types of collagen

To
date, scientists have identified 28 types
of collagen. They differ according to structure,
composition, and location, but all collagens are characterized by at least one triple
helix structure.

Among
these, there are five most common types of collagen:

Type I comprises 90% of all the body’s collagen. It is the strongest type and is mainly found in skin, bones, tendons, vasculature, and organs.

Type II is prevalent in elastic cartilage, supporting the joints by providing tensile strength and elasticity, especially at joint surfaces.

Type III is commonly found together with Type I, including in bone marrow, vasculature, and organs. It is the main component of the reticulin fibers, secreted by reticular cells, that form a network mesh with several functions in structural support, wound healing, and immune support.

Type IV is primarily found as a mechanical scaffold in the skin and basal lamina, a layer of extracellular matrix secreted by epithelial cells that anchors the cells to the connective tissue.

Type V collagen is abundant in the eye cornea, placenta, and in dermal/epidermal region of the skin. Notably, type V collagen is required for the fibrillation of type I and III collagens.

What does collagen do?

Collagen
forms matrices to provide the rigidity and structural integrity of the body. Owing
to its connective function, it provides structure, support, and strength to
tissues, organs, and the body. Without collagen, we might not be able to move,
let alone survive.

In
addition to structural support, collagen also functions to:

• Aid in cell regeneration and repair.
• Keep the skin strong, elastic, and waterproof.
• Help with blood clotting.
• Protect organs.

In Ehlers-Danlos syndromes (EDS) is a group of disorders caused by collagen deficiency. Patients with these conditions have loose joints that may dislocate easily and fragile skin that bruises easily, and may suffer from chronic fatigue and issues with multiple organ functions.

What happens to collagen with aging?

Collagen
declines with age. When collagen becomes deficient, parts of the body that need
collagen for normal physiological functions are drastically affected. During
aging, the overall collagen levels decrease, or some may become impaired, resulting in fibrosis.

The effects of reduced collagen levels

When
collagen levels decrease, the skin losses elasticity and moisture and feels rougher. As a result, fine lines and wrinkles form. Reduced
collagen in muscles, bones, cartilage, or tendons also leads to overall weakness,
muscle aches, and joint pain.

Other
signs of declining collagen levels include:

Abnormal collagen synthesis results in fibrosis

Fibrosis
is the abnormal thickening or scarring of tissues. It is a normal mechanism
of healing injuries. It does so by laying collagens in the extracellular matrix to
help restore tissue integrity and promote cellular repair. Natural
aging may also promote fibrosis due to increased inflammation, oxidative
stress, and molecular damage in old tissues. In addition, fibrotic or scarred tissue
has increased collagen deposition resulting in stiffening. In young people,
fibrosis resolves after healing. However, fibrosis resolution is impaired in old age and may lead to serious health issues.

Aging-associated fibrosis is usually found in organs like the lungs, heart,
kidney, and liver, which causes chronic diseases due to malfunction.

What lifestyle habits damage collagen?

While
collagen synthesis gradually declines with age, several factors cause a more
rapid drop in collagen production. This includes excessive sun exposure,
smoking, excessive alcohol consumption, and poor diet. Managing these factors
can preserve or improve your collagen levels.

Ultraviolet (UV) light

UV
light can speed up collagen and elastin degradation. In the New England
Journal of Medicine, doctors revealed the case of a man with
unilateral dermatoheliosis (photoaging) resulting from 28 years of UV-A exposure as a truck
driver. One side of the man’s face has severely thick and wrinkled skin, while
the other is normal.

However, the sun is not the only UV source. Aside from the sun, UV is also emitted
by some halogenic, fluorescent, or incandescent light bulbs, mercury lamps, tanning
beds, welding torches, and of course, UV lamps. Therefore, wearing sunscreens or
creams and lotions with SPF is highly recommended, whether indoors or outdoors.

Smoking

Smoking
is very bad for collagen levels.

Research
reveals that up to 40% drop in collagen production is attributed to smoking. No
wonder people who smoke regularly often have premature facial wrinkles and
abnormal wound healing. In a study
that compared collagen synthesis in smokers vs. non-smokers, researchers found
that smokers have 18% and 22% lower type I and III collagen synthesis rates,
respectively. In addition, smokers have 100% higher levels of MMP8, an enzyme
that degrades collagen.

Excess alcohol consumption

Excessive
alcohol consumption also causes collagen depletion.

Alcohol can inhibit
collagen biosynthesis. It can also deplete the body’s nutrient and vitamin pool.
When fibroblasts — the collagen-producing cells — are deprived of important nutrients that support collagen synthesis, they impair the process. Researchers also
found that alcohol also causes accelerated collagen loss and impairs collagen
metabolism.

Diet

Too
much sugar and refined carbohydrates promote collagen damage. Simple sugars
like glucose and fructose can cross-link collagen fibers which becomes difficult to
repair. This also triggers the expression of advanced glycation end products
(AGEs), which are linked to inflammation, aging, and degenerative diseases. In
addition, AGEs
encourage age-related, collagen-associated tissue damage and dysfunction. Meanwhile, the Mediterranean diet ameliorates AGEs and may counter the detrimental collagen deposition
in the liver that causes liver fibrosis.

Collagen supplements

Several
studies have shown that oral collagen supplementation may help alleviate
symptoms and disorders related to collagen decline. On the other hand, some
experts also state that it is not that simple.

According to
Harvard, upon ingestion, collagen is broken down completely, absorbed
into the bloodstream, and distributed into different areas of the body as components
of different kinds of proteins and tissues. Hence, ingested collagen is not
necessarily incorporated into the body as collagen.

Nonetheless,
since collagen also provides the exact building blocks needed for its production,
supplementation can also support internal collagen synthesis to a certain
extent. In line with this, people may need higher doses or optimized
formulations to provide beneficial effects.

With several collagen formulation options on the market, which reaps the most benefit?

Liquid collagen

Liquid
collagen has the advantage of higher bioavailability. According to Physician’s
Desk Reference, liquid supplements have up to 90% capacity for absorption within 30 seconds, compared with pill formulations which are at around 40%.

Collagen powder

Since
collagen powder has lower bioavailability than the liquid form, it is usually formulated
with higher concentrations to circumvent this issue. More importantly, whole
collagen proteins may be less efficient for absorption, while collagen peptide forms may be more easily absorbed. One explanation is that collagen peptides are hydrolyzed or
fragmented versions of the collagen protein.
Collagen powders are usually consumed by mixing them with smoothies or shakes.

Collagen pills

Pills
and powder are often the same, wherein tablets contain collagen powders in
capsule form. Since capsules have limited capacity and studies recommend 2.5–15 grams of collagen per day, collagen pills would require taking several pills to
meet this requirement. In comparison to other formats, pills are more
convenient, take up less space, are easier to take, and cause no mess.

Ways to increase collagen naturally

The
most popular method to boost collagen levels is oral supplementation with
collagen. Other nutrients supporting collagen production include Vitamin C and Hyaluronic
acid; hence some collagen supplements also contain these ingredients.

Eating
collagen-rich foods or foods with high amounts of collagen precursors, like pork/beef
bone broth, organ meats, egg whites, and fish, can help but may not be as good
as supplements in terms of dosage and effectiveness. However, regular exercise
and getting enough sleep naturally boost collagen levels.

Exercise

Lack
of physical activity is associated with decreased collagen production. Conversely,
exercise, like resistance training and high-intensity interval training (HIIT),
is a potent method to stimulate collagen synthesis. Recent data further
provide evidence that when combined with collagen supplementation, resistance exercise training increases body mass,
fat-free mass, and muscle strength, in addition to increased collagen levels.

Get enough sleep

Sleep is part
of the body’s regeneration
and repair process, wherein new collagens and elastins are synthesized.
Disrupted
sleep is also associated with collagen and bone loss. Getting at least 7-8 hours
of sleep at night can provide optimal effects on collagen production.