Bright light alters metabolism and increases insulin resistance
(NaturalHealth365) Bright light exposure seems to influence our metabolism. Although researchers aren’t entirely sure why, they’re hoping this effect could be used to manipulate metabolic function in positive ways. One thing is certain: insulin resistance and blood sugar imbalances do occur with the overexposure of artificial light – especially at the wrong time of the day.
For example, scientists from Northwestern University Feinberg School of Medicine have found that bright light exposure in the morning and evening increases insulin resistance compared with dim light exposure at these times.
Evening bright light exposure can cause high blood sugar
Evening exposure to bright light leads to higher peak glucose levels and insulin resistance as well. And, just to be clear, insulin resistance refers to the inability to move glucose from the bloodstream adequately, and the result is high blood sugar. Over time, excess body fat and higher diabetes risk can occur.
Previous studies related to light exposure have shown that those who received most of their exposure to bright light after 12 pm tended to be heavier than those who were exposed earlier in the day. Mice kept in constant light eventually have altered metabolism related to glucose. This makes them more likely to gain weight than mice not exposed to high amounts of light.
In these cases, insulin could not effectively bring glucose back to baseline levels after a meal during evening bright light exposure. The study results emphasize how daily light exposure and our environment impacts health.
Timing is everything when it comes to bright light exposure
These results point to the influence of dark and light exposure times. It’s important to find the ideal pattern for ideal health. The recent Northwestern study examined the immediate effects of three hours of exposure to blue-enriched light in the morning or evening compared with dim light at these times. Its effects on metabolic function, hunger and physiological arousal were all studied and tracked.
Did you know? The liver is the most important detoxifying organ in the body. When the liver can’t effectively neutralize and dispose of toxins, they accumulate in the body. Two essential nutrients for healthy liver function are milk thistle and glutathione. These two ingredients - plus much more – are now available in an advanced liver support formula. Click here to learn more.
Nineteen adults in good health were divided into a morning bright light exposure group (0.5 hours after waking) and an evening group (10.5 hours after waking). Results were then compared with each person’s dim light exposure results to create a baseline. The evening group ate their dinner in light, while the morning group ate their breakfast while exposed to bright light.
Results showed that blue-enriched light exposure altered metabolic functioning acutely in both groups compared with dim light exposure. While both resulted in higher insulin resistance, the evening exposure caused higher peak blood glucose levels. The results show the inability of insulin to manage increased blood sugar in the evenings.
Cancer-fighting melatonin influenced by bright light exposure
Artificial light confuses the brain’s pineal gland, and this can disturb melatonin production. Melatonin regulates our sleep cycles, but it is also a cancer-fighting substance.
Melatonin also prevents neurodegenerative diseases by regulating circadian rhythms, mood, sleep quality, and more. It cleans up free radicals and has antioxidant and immunomodulatory qualities. When melatonin production is impaired, we are at higher risk for cancer and other health issues.
Being proactive about exposure to light throughout the day can bring a range of health benefits. To learn more about how to protect yourself from the negative effects of artificial light – listen to the NaturalHealth365 Podcast, “Blue light therapy.”
Food & Nutrition
Natural Health 365
Natural Health 365 is a premium source of trending and popular health-related news, science, testimony & research articles on the most up to date and relevant natural health information. The Food & Nutrition articles found herein are meant to inform and advise our site visitors on eating healthy, nutritious foods and safely using supplements and vitamins to achieve optimal health.
Join thousands of daily visitors staying informed and involved on Natural Health 365! We seek out scientific solutions with proven results and it is our mission to keep you informed! Articles range in topic from the cancer fighting qualities of Olive Oil, to the remarkably high concentration of anti-oxidants found in blueberries, to how to make your own almond milk, to a nutritional comparison of organic vs conventional produce, to an analysis of the health benefits of tree nuts. You can find all of the Food News Articles here
Read Some of Our Most Popular Articles
Artichokes, Olive Oil, Almond Milk, Blueberries
More Food & Nutrition Articles
Fresh Organic Produce Fights Cancer, Susan G. Komen on Organic Foods, Hemp Seeds for Inflammation, Pau D’Arco For Improved Immunity
In addition to exploring health benefits of certain foods, vitamins and supplements, we also aim to connect healthy eating and balanced consumption of dietary supplements to long-lasting health and adding healthy, happy years to your life. For example, did you know that eating Granny Smith Apples on a regular basis can reduce your chance of building up unhealthy gut yeast? Or that ingesting ground hemp seeds can significantly reduce inflammation throughout the body? Perhaps you didn’t know that Fresh Organic Produce has been found to have higher concentrations of key, cancer-fighting anti-oxidants and vitamins than conventional produce? You can find all of that information and more right here on Natural Health 365.
We’d love to know what you’re thinking! Please join the conversation on Facebook, post comments here on the website and feel free to reach out to us if you have any questions.
Please use and share the articles you find here with your friends, family and peers.