Published: September 20, 2025
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You only get one set of eyes in your lifetime. Make sure you protect them. Not just with glasses, but with the proper nutrition your vision truly depends on. Here are 7 of the most powerful nutrients for lifelong eye health: đź§µ

Most eye diseases share a common trigger: oxidative stress. • Cataracts • Glaucoma • Macular degeneration • Retinopathy High blood sugar and insulin resistance accelerate all of these conditions. This is why vision problems are so common in people with diabetes.

The good news is that specific nutrients can act as powerful antioxidants to shield your eyes from damage. Let’s start with the most important one…

1/ Vitamin A The most essential nutrient for your eyes. • Supports night vision • Prevents dry eyes and night blindness • Protects against cataracts and macular degeneration Without vitamin A, your eyes simply cannot function properly.

2/ Vitamin B1 (Thiamine) Deficiency is common in people with diabetes and those who consume high-carbohydrate diets. Low levels of B1 raise the risk of cataracts and retinopathy. The most effective form is benfotiamine, a fat-soluble version that reaches deeper into tissues.

Image in tweet by Dr. Eric Berg

3/ Vitamin B3 (Niacin) Helps maintain healthy eye pressure and protects against glaucoma. Nutritional yeast is one of the best natural sources of B3, along with other B vitamins that support nerve and eye health.

4/ Zinc Your eyes contain high concentrations of zinc, and it is essential for vitamin A to function properly. A deficiency raises the risk of cataracts and macular degeneration. Zinc deficiency is widespread, affecting a large portion of the global population.

5/ Carotenoids (Lutein and Zeaxanthin) These compounds act like internal sunglasses for your retina. • Filter harmful light • Reduce risk of macular degeneration They are found in kale, spinach, leafy greens, tomatoes, and egg yolks.

6/ Vitamin D Low vitamin D levels are strongly linked with a higher risk of cataracts. As a fat-soluble antioxidant, it protects delicate tissues of the eye. Best sources include sunlight, cod liver oil, and supplementation.

Image in tweet by Dr. Eric Berg
Image in tweet by Dr. Eric Berg

7/ Vitamin B2 (Riboflavin) Riboflavin deficiency produces effects similar to zinc deficiency, increasing the risk of cataracts and macular degeneration. It also supports the nervous system, which is directly tied to vision. Nutritional yeast is one of the best natural sources.

Together, these seven nutrients help protect your eyes from oxidative stress, the hidden driver of vision loss. Take care of your vision today and it will serve you for a lifetime. To learn more about protecting your eyes, watch this video: https://youtu.be/G_-bGCgJOmE

A bit about me: I’m the creator of Healthy Keto® and Intermittent Fasting protocols, helping over 100M people make healthier choices. Follow me @dr_ericberg for more evidence-based insights to improve your health and longevity.

What is one key takeaway you gained from this thread? Share it in the comments below. I read every comment and often use them to create future content that matters to you.

@dr_ericberg Eat meat

@dr_ericberg Thank you for this post. Can you please tell us which natural foods are the best for eyecare? Thank you in advance.

@dr_ericberg Great thread! Eye health doesn’t get enough attention.

@dr_ericberg Great thread. One key addition: Hydration. Many people are chronically dehydrated, which worsens dry eyes and oxidative stress. Staying well-hydrated supports tear production and eye health. simple but often overlooked for protecting your vision long-term.

@dr_ericberg @1Mahii1 👍👍 This guy's post is brilliant.✌️👏🤛

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