Is Your Cell Phone Causing Sweet Cravings Late at Night?

author avatar Dr. Eric Berg 11/18/2021

Find out why blue light can trigger strong cravings for sweets at night—and what to do about it.


0:00 Introduction: Is your cell phone causing sweet cravings late at night?

0:54 Blue light and blood sugar levels

1:27 Craving sugar at night? Try these tips

1:55 Share your success story!

In this video, we’re going to talk about why your cell phone could be behind your late-night cravings.

Some people still have sugar cravings at night while they are on a Healthy Keto and intermittent fasting plan. Why?

I stumbled upon a study that had some interesting data about sweet cravings that come from things other than your diet.

Cell phones, tablets, computers, and TVs, emit blue light. When blue light goes into the retina and the hypothalamus, it can affect your circadian rhythm.

Blue light interferes with your melatonin level and spikes your cortisol level. In turn, this can affect your blood sugar level.

When you have low blood glucose late at night, you can experience strong cravings for sweets.

Just an hour of blue light exposure has the potential to increase your sugar cravings. If you experience sweet cravings late at night, here’s what you can try:

• Turn your phone and computer on nightshift mode or use an app to filter out blue light

• Wear glasses that filter out blue light in the evening

• Avoid the use of your electronic devices within two hours of bedtime

• Use warm or red light in the evening and avoid blue-tinted or cool lights

Give these tips for avoiding blue light a try, and let me know if they help you with your cravings for sweets in the comments below.

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