Is coffee good or bad for your eyesight? Cataract prevention and other eye benefits
Did you know that caffeine and coffee prevent cataracts in the eyes? Coffee, or rather the caffeine it contains, is responsible for a large number of effects on our body.
From the moment you cling to that steaming mug every morning like a castaway clings to a hoverboard until hours after you've had your last afternoon coffee, caffeine moves through your body working its magic.
However, although its most popular benefits are well known to almost everyone, there are other caffeine properties that are far from being so widespread. The latest discoveries point directly towards the field of eye health, specifically the cataracts and the effect of caffeine on them.
In Incapto We're going to talk about how caffeine and coffee can improve your eye health.
How does caffeine affect eyesight?
Mechanisms of action in the body
Caffeine acts as an antagonist of adenosine, a molecule that induces fatigue in the body. By blocking adenosine receptors, caffeine prevents them from detecting the molecule, which reduces feelings of fatigue and increases alertness and concentration. This mechanism explains why caffeine keeps us awake and alert.
Impact of caffeine on eye health
Although in the past it was thought that caffeine could increase intraocular pressure, no direct relationship has been found between its moderate consumption and eye problems. On the contrary, the Caffeine and the antioxidants present in coffee, such as chlorogenic acid, may have protective effects on the retina.
Furthermore, studies have shown that the pyrocatechol, a substance formed during coffee roasting, acts as an antioxidant and can help prevent cataract formation.
Effects of caffeine on the prevention of cataracts and other eye problems
Is coffee good for preventing cataracts?
A study published in Clinical Ophthalmology in 2016 analyzed the effects of coffee and caffeine on prevention of cataracts in animals, showing that both topical and oral use of caffeine has an inhibitory effect on cataract formation.
Although the exact cause is not completely clear, it is suggested that the antioxidant effects of caffeine and its direct action on the lens could be responsible for this benefit.
The relationship between coffee and conjunctivitis
Although less researched, the possible relationship between coffee consumption and reducing the risk of conjunctivitis, thanks to the anti-inflammatory properties of the antioxidants present in coffee. However, more studies are needed to confirm this effect.
Coffee and the prevention of eye diseases
Studies on cataracts and macular degeneration
Various studies have explored the protective effects of coffee and caffeine on eye diseases, such as cataracts and macular degeneration. The evidence suggests that the antioxidants present in coffee, such as pyrocatechol, play a crucial role in preventing these conditions, protecting ocular tissues from oxidative damage.
Comparison with other preventive methods
Coffee consumption could be as effective as other preventive methods, such as the use of antioxidant supplements and a diet rich in fruits and vegetables, to protect eyesight.
However, it is important to consider coffee as part of a comprehensive eye health approach, combined with other healthy practices to maximize the benefits.
Other beneficial effects of coffee for eyesight
Glaucoma risk reduction
Moderate coffee consumption has been associated with a possible reduced risk of developing glaucoma. This is due to the antioxidants present in coffee, which can help protect the optic nerve from damage caused by elevated intraocular pressure, one of the key risk factors for glaucoma.
Improvement in general visual function
In addition to preventing specific eye diseases, coffee may contribute to better overall visual function. The antioxidants and other bioactive compounds in coffee Help maintain the health of the retina and lens, which could improve the quality of vision and protect against age-related decline.
Additional benefits of caffeine
Caffeine, beyond its direct effects on vision, improves attention span and reduces fatigue, which may indirectly benefit eye health by allowing better concentration on visual tasks.
Furthermore, acts as thermogenic, helping to burn fat during exercise, which could have indirect benefits for general health, including eye health.
Adequate caffeine consumption for eye health
Recommended dosage and precautions
To enjoy the benefits of caffeine without the risks, a recommended daily consumption of up to 400 mg, equivalent to about 4 or 5 cups of coffee. In people with special sensitivity to caffeine, the daily amount can be reduced to 200 mg.
It is important to keep in mind that the effects of caffeine can last up to 6 hours, so it is advisable to plan your intake so as not to interfere with sleep.
Contraindications: When could it be bad for your eyesight?
Although caffeine has potential eye health benefits, its excessive consumption can have adverse effects, such as increase intraocular pressure in susceptible people, which could be harmful. It is essential to moderate intake and be attentive to how your body reacts to avoid possible negative effects.
