Lutein + Zeaxanthin · Macular Pigment

Story

Connected to · 4

cofactor · 1

Fat Types
Lutein is fat-soluble: it has to dissolve into the fat droplets in the gut and cross the gut wall along with the fat before it reaches the blood. In Unlu 2005, adding avocado to the same salad clearly raised absorption of lutein, beta-carotene and lycopene. So take a lutein supplement with a meal that contains fat, and give leafy greens a little oil.

regulates · 1

Eyes · Myopia · Screens
Lutein and zeaxanthin concentrate in the macula, the center of the retina, and the people with trial evidence for an eye-health formula are those who already have intermediate macular degeneration. Myopia means the eyeball has grown too long, and no supplement can shorten it, so protecting the macula and preventing myopia are separate problems.

contrast · 2

Astaxanthin
Both are carotenoids, but the evidence is not in the same league. Lutein and zeaxanthin are the main pigments of the macula; in intermediate age-related macular degeneration, AREDS2 found they can safely replace the formula's beta-carotene, though adding them did not slow progression further. Astaxanthin has had no such trial, and eye-health blends of several carotenoids have never been compared.
Insomnia
Screens affect your eyes and your sleep in two separate ways, and blue-light marketing merges them into one: tired eyes from screens come mainly from dryness because you blink less, plus the focusing muscles staying tense, while evening screen light shifts the timing of melatonin release. The first is helped by looking into the distance every so often, the second by managing when you get light.

Read full story

Stop 1/4

The yellow pigment in the macula

EVIDENCERCT 2

READ THE ORIGINAL

Lutein and zeaxanthin are a layer of yellow pigment in the macula, the small patch at the very center of the retina. The layer sits in front of the light-sensing cells and filters out part of the blue light before it reaches them. Reading print and recognizing a face both depend on this one small patch.

Both pigments come from plants. The body cannot make them, so they have to be eaten. The macula actively pulls them in and piles them up to more than a thousand times their concentration in blood. Beta-carotene and lycopene belong to the same family and also circulate in the blood, yet they cannot get through this door.

Once there, the pigments do two jobs. First, they act as a yellow filter grown in front of the light-sensing cells: blue light has to pass through the pigment before it can touch those cells, so part of it is removed before any damage happens. Second, sitting in the most oxidation-prone tissue in the body, they take the oxidative hit in place of the cell membranes.

In observational studies, people with a thinner pigment layer more often have age-related macular degeneration (AMD), the disease in which central vision slowly blurs in later life. This is an association; it does not show that a thin layer causes the disease.

Watch this step as a mechanism animationOpen mechanism

Educational content, not medical advice — consult a clinician.

Back

Lutein + Zeaxanthin · Macular Pigment

Story

Connected to · 4

cofactor · 1

Fat Types
Lutein is fat-soluble: it has to dissolve into the fat droplets in the gut and cross the gut wall along with the fat before it reaches the blood. In Unlu 2005, adding avocado to the same salad clearly raised absorption of lutein, beta-carotene and lycopene. So take a lutein supplement with a meal that contains fat, and give leafy greens a little oil.

regulates · 1

Eyes · Myopia · Screens
Lutein and zeaxanthin concentrate in the macula, the center of the retina, and the people with trial evidence for an eye-health formula are those who already have intermediate macular degeneration. Myopia means the eyeball has grown too long, and no supplement can shorten it, so protecting the macula and preventing myopia are separate problems.

contrast · 2

Astaxanthin
Both are carotenoids, but the evidence is not in the same league. Lutein and zeaxanthin are the main pigments of the macula; in intermediate age-related macular degeneration, AREDS2 found they can safely replace the formula's beta-carotene, though adding them did not slow progression further. Astaxanthin has had no such trial, and eye-health blends of several carotenoids have never been compared.
Insomnia
Screens affect your eyes and your sleep in two separate ways, and blue-light marketing merges them into one: tired eyes from screens come mainly from dryness because you blink less, plus the focusing muscles staying tense, while evening screen light shifts the timing of melatonin release. The first is helped by looking into the distance every so often, the second by managing when you get light.

Read full story

Stop 1/4

The yellow pigment in the macula

EVIDENCERCT 2

READ THE ORIGINAL

Lutein and zeaxanthin are a layer of yellow pigment in the macula, the small patch at the very center of the retina. The layer sits in front of the light-sensing cells and filters out part of the blue light before it reaches them. Reading print and recognizing a face both depend on this one small patch.

Both pigments come from plants. The body cannot make them, so they have to be eaten. The macula actively pulls them in and piles them up to more than a thousand times their concentration in blood. Beta-carotene and lycopene belong to the same family and also circulate in the blood, yet they cannot get through this door.

Once there, the pigments do two jobs. First, they act as a yellow filter grown in front of the light-sensing cells: blue light has to pass through the pigment before it can touch those cells, so part of it is removed before any damage happens. Second, sitting in the most oxidation-prone tissue in the body, they take the oxidative hit in place of the cell membranes.

In observational studies, people with a thinner pigment layer more often have age-related macular degeneration (AMD), the disease in which central vision slowly blurs in later life. This is an association; it does not show that a thin layer causes the disease.

Watch this step as a mechanism animationOpen mechanism

Educational content, not medical advice — consult a clinician.