Scientists Uncover Surprising Link Between Diet and Nearsightedness

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September 08, 2025 | Source: Science Daily

A diet rich in omega-3 fatty acids, found predominantly in fish oils, may help ward off the development of nearsightedness (myopia) in children, while a high intake of saturated fats, found in foods such as butter, palm oil, and red meat, may boost the risk of the condition, finds research published online in the British Journal of Ophthalmology.

The global prevalence of myopia is rising, especially in East Asia, and it’s predicted that around half of the world’s population will be affected by 2050, note the researchers.

Risk factors are thought to include excessive screen time and too little time spent outdoors, as well as inherited susceptibility, they explain.

Omega-3 polyunsaturated fatty acids (ω-3 PUFAs), which can only be obtained from the diet, are thought to improve/prevent several chronic eye conditions, including dry eye disease and age-related macular degeneration. But whether they can help ward off myopia isn’t clear as studies to date have been experimental and haven’t included people.

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