Can exercise protect your vision?

*Updated January 2025

We often associate exercise with benefits like weight management, cardiovascular health, and improved mood. However, did you know that regular physical activity might also help protect your vision?

Protect your vision by moving your body

Maintaining an active lifestyle isn’t just beneficial for your body. It can positively impact your eye health too. Several studies have indicated that there’s a correlation between regular exercise and a reduced risk of certain eye conditions that may cause vision loss.

Exercise may protect your vision by lowering risk of age-related macular degeneration

Age-related macular degeneration (AMD) is a common cause of vision loss among older adults. While AMD doesn’t cause complete blindness, it may make it difficult to read, drive, and even see faces.

Now, researchers may have found a way for people to lower their risk of developing AMD or slow down its progression through exercise.

A study from The Scientific Journal of The Royal College of Ophthalmologists found that engaging in regular physical activity has been associated with a decreased risk of developing AMD. In the longitudinal study, researchers found that participants who engaged in an active lifestyle over 15 years reduced their risk of developing AMD by 70%.

While the reasons behind the association aren’t clear, the study suggests that “Physical inactivity has been associated with the development of precursors for AMD in the form of macular drusen and may facilitate the progression of vision loss and AMD severity through inflammation and endothelial dysfunction.”

Exercise can protect your vision by reducing the likelihood of developing glaucoma

Physical activity may not only safeguard against AMD. The same study found that moderate exercise may have a protective effect against glaucoma as well.

Elevated intraocular pressure (IOP) is a significant risk factor for glaucoma, and exercise has been shown to help regulate and reduce this pressure.

In a study from the Indian Journal Ophthalmology, published in the National Library of Medicine, researchers found that study participants had a reduction in intraocular pressure after aerobic exercise (AE) in both healthy and primary open-angle glaucoma (POAG) eyes.

The study goes on to suggest that “These results laid down some groundwork for the possibility of the potential use of AE as a beneficial lifestyle modification for IOP reduction in POAG patients.”

These findings are especially significant for people who aren’t benefiting from IOP reducing medications or surgeries.

Exercise protects your vision by promoting better blood circulation in the eyes

Exercise promotes better blood circulation throughout the body, including the tiny blood vessels in the eyes. Adequate blood flow ensures that the eyes receive essential nutrients and oxygen, contributing to overall eye health. This improved circulation can potentially reduce the risk of conditions related to poor blood flow in the eyes, such as diabetic retinopathy.

Protect your vision with more than just exercise

While exercise can help to protect your vision, it’s equally important to get regular eye checkups. Comprehensive eye exams can detect potential issues early, allowing for timely intervention and treatment.

Prioritize your health, stay active, and don’t forget to schedule regular eye examinations to keep your vision sharp and clear for years to come.

If you want more ideas to protect your vision, read “The sun and our vision: Prevent eye damage from the sun.”

Five “health foods” your dentist wishes you wouldn’t eat

*Updated January 2025

Maintaining good dental health starts with the choices you make in your diet. While many foods are celebrated for their overall health benefits, some seemingly nutritious options can have a hidden downside when it comes to your teeth. Understanding how these choices impact your oral health is key to keeping your smile strong and vibrant.

Your dentist might wish you would think twice about these five health foods that, despite their positive reputation, could be causing more harm than good to your pearly whites.

Health foods that aren’t healthy for your teeth

If you find yourself eating these health foods consistently, you may want to consider swapping them out for more tooth-friendly options.

1. Dried fruit

Dried fruit that’s not covered in sugar contains nutrients that are good for your overall health. However, if the dried fruit you’re consuming is covered in sugar, they aren’t friendly to your teeth.

Did you know 100 grams of sugar-coated (sometimes called candied) dried fruit contains a whopping 81 grams of sugar?

It’s no secret that sugar is harmful for your oral health, especially when it comes to the development of caries. According to the American Dental Association (ADA), “Sugars, specifically, are considered to be the most important drivers of caries development.”

Additionally, removing the water from these fruits makes them sticky. Sticky foods are hard to clear away from teeth and often stay on them longer than other foods. Because of this, acids that are produced from the bacteria that metabolize the particles have more time to eat away at the hard portions of your teeth.

If you consume dried fruit, make sure to rinse your mouth with water and floss to clean your teeth after you’re done.

2. Citrus fruits

Citrus fruits are similar to dried fruits in that they can benefit your body, but too much citrus can harm your teeth. Oranges and grapefruits provide vitamin C and other nutrients, but their acidic compounds damage teeth. Citrus fruits can erode tooth enamel, which can lead to tooth decay.

It may be hard to avoid these fruits altogether, but drinking water after consuming citrus can keep your dental health in check.

3. Granola bars

For most people, granola bars seem like the perfect quick snack. However, many types of granola bars are full of sugar, artificial sweeteners, and other highly processed ingredients like vegetable oils, preservatives, and artificial flavors.

When it comes to your oral health, the added sugar in this health food may cause cavities, tooth decay, and other problems. Additionally, some may contain sticky items such as dried fruit bits, which can get stuck in between your teeth and may be harder to remove quickly.

If you can’t live without granola bars, find ones that are low in sugar or use natural sweeteners such as figs or dates. Remember to rinse your mouth with plain water after!

4. Sports drinks

Despite their popularity during activities, many sports drinks tend to have large amounts of sugar. In fact, consuming a sports drink is only slightly better than a regular soda in some cases.

Some of the biggest consumers of sports drinks are children and adolescents. A study from the Official Journal Of The American Academy Of Pediatrics found that while “daily consumption of sports drinks has decreased overall, sugar-sweetened sports drinks remain popular, with the majority of high school students drinking them at least weekly.”

It’s best to skip this drink and stick with water to rehydrate. Your teeth will thank you!

5. Energy gels

Like sports drinks, energy gels provide energy and carbohydrates, but the acid levels can cause tooth erosion and escalate the risk of dental health complications.

According to a study, despite athletes having good dental routines, energy gels and sports drinks have shown an “association between periodontal disease and impact on both daily activities and sports performance.” It can be challenging for competitive athletes to avoid energy gels, but they should be limited to maintain a healthy mouth.

Keep a look out for deceptive health foods

It’s easy to be misled by these so-called health foods, but staying mindful is essential for protecting your oral health. Hidden sugars and acidic compounds in these foods can contribute to cavities and tooth decay, making it crucial to prioritize care for your teeth even when choosing seemingly nutritious options.

Even if you stay away from these foods, it’s still important to consistently brush, floss, and visit the dentist at least once a year to ensure your mouth is healthy.