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Can High Blood Sugar Make You Tired? What Science Says About Fatigue, Glucose, and Energy Loss

Feeling persistently tired can be a puzzling and frustrating experience, especially when lifestyle factors like sleep and diet seem to be under control. For many people, this fatigue may be rooted not in sleep deprivation or overwork, but in a less obvious physiological factor: high blood sugar. While glucose is the body’s primary source of energy, paradoxically, elevated blood glucose levels can cause sluggishness, daytime sleepiness, and a persistent sense of fatigue that interferes with quality of life. But how can something meant to energize the body do the opposite? This article explores the complex connection between elevated glucose and energy loss, examining the underlying science, current research, and practical strategies for managing blood sugar-related fatigue.

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Better Nutrition News delivers the latest, research-backed insights on diet and nutrition, helping you make informed choices that support vitality and longevity. We cut through misinformation with expert analysis, practical strategies, and deep dives into the science of food, supplements, and metabolic health. Whether you're optimizing your diet, exploring emerging nutritional trends, or seeking clarity on what truly works, our content equips you with the knowledge to take control of your well-being. Subscribers to our FREE newsletter gain exclusive access to expert interviews, in-depth reports, and actionable guidance that can transform the way you eat and live. Stay ahead of the curve with updates on cutting-edge nutritional science, emerging superfoods, and evidence-based strategies—all delivered straight to your inbox. Join a growing community that values facts over fads and is committed to a smarter, healthier approach to nutrition.

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Diet & lifestyle

Expert Advice

What to know about rice

Rice (Oryza sativa) contains carbohydrates, which give energy, but can raise blood sugar. Brown rice has more fiber, which helps support gut health and...

What are the benefits of lentils?

Lentils belong to the legume family. They resemble a tiny bean, grow in pods, and come in red, brown, black, and green varieties. They...

Finding the Best Vitamin for Liver Health: Decrease Inflammation and Support a Strong, Healthy Liver with Choline and Krill Oil

The liver, a crucial organ in maintaining our overall health, extends its influence far beyond its commonly known role in detoxification. Contemporary research underscores...

Finding the Best Alpha Lipoic Acid Supplement

Alpha lipoic acid is a fatty acid that confers a range of health benefits, many of which are associated with its function as an...

Health

Vitamins

Supplements

The Ultimate Guide to Choosing a Safe and Effective Silicone Sippy for Growing Kids

When it comes to supporting healthy hydration habits and nutritional milestones in early childhood, few tools are as significant—or as hotly debated—as the sippy cup. In today’s marketplace, the silicone sippy has emerged as a favored choice among parents and pediatricians alike, offering a safe, adaptable, and developmentally supportive way to transition children from bottles to open cups. Its popularity is not just a passing trend but a reflection of growing awareness about material safety, ergonomic design, and the need to balance convenience with long-term health outcomes. In this comprehensive guide, we’ll explore everything caregivers need to know about choosing the right silicone sippy cup for their growing child—from materials and mechanics to design and durability—while maintaining a close eye on nutritional development and hydration best practices.

Food As Medicine

Everything you need to know about turmeric

Turmeric, sometimes called Indian saffron or the golden spice, is a tall plant that grows in Asia and Central America. The turmeric on shelves and...

Science & Research

All you need to know about egg yolk

Egg yolks are the yellow part at the center of an egg. They contain high levels of cholesterol but also provide a range of...

Supplements & Functional Foods

7 Health and Nutrition Benefits of Pinto Beans

Pinto beans are the most popular dried beans in the United States. They’re a variety of the common bean (Phaseolus vulgaris), which is frequently used...