When it comes to overall physical health and body function, it’s no secret that glucose is the primary means our body uses for energy. Every cell in the human body utilizes sugar to fuel our day to day brain and metabolic processes. While glucose is imperative for normal, healthy brain and body functions, the relationship between sugar and a healthy brain is one that depends on moderation. Sugar comes in many forms known as glucose, sucrose, fructose, and even honey. At United Brain Association, we are taking a closer look at this relationship because this fuel is imperative to a healthy brain.
The U.S. Department of Agriculture (USDA) claims that the average American consumes roughly 156 pounds of sugar a year, or 34 teaspoons of sugar a day more than our bodies need. These amounts go above and beyond the recommended daily serving size. While our bodies certainly need glucose for normal body and brain functions, consuming too much sugar can be detrimental. Knowing how our body turns glucose into fuel and the reasons sugars are necessary to its function can help us understand how to manage it in our diets. In the long run, understanding why we need sugar and how much is the right amount will help us all lead healthier and longer lives.
How Sugar Affects the Brain
To better understand why glucose and other forms of sugar in moderation are important to a healthy lifestyle, we need to first understand exactly how and why our bodies use this chemical as fuel. We know that the brain cannot function without glucose, but what do various forms of sugar do to our brain? Because the human brain is rich in neurons and nerve cells, it’s no surprise that it happens to demand the most use of glucose supplied energy.
Neurotransmitters, the parts of the brain that serve as chemical messengers, are not produced when there is a lack of glucose. A lack of sugar means communication between these imperative cells breaks down, and cognitive function is impacted. It can also cause hypoglycemia, a complication of diabetes caused by low glucose levels. Diets high in sugar also reduce the production of brain-derived neurotrophic factors or BDNF. BDNF assists in the connections between nerve cells also known as synapses. Without this key protein, growth, development, and communication between these nerve cells becomes impaired. When these synapses are unable to communicate properly, a decline in multiple neurological functions can be seen. Further research has linked BDNF to degenerative disorders such as Alzheimer’s disease and dementia.
Unhealthy levels of blood sugar have an adverse effect on the brain; excessive levels can lead to cognitive decline. According to the Diabetes Research Institute, over 34 million people are living with diabetes in the U.S. alone while The World Health Organization (WHO) reports that over 422 million people worldwide live with this disease. How do diabetes and sugar consumption affect the brain you ask? Research published by the Johns Hopkins Bloomberg School of Public Health in 2014 found that the link to significant cognitive decline in middle-aged individuals living with diabetes was astounding. The conclusion of their research shows that glucose metabolism and BDNF may go hand in hand.
Sugar in Moderation
To help our brains function as efficiently as possible for as long as possible, it’s important to manage our glucose levels with a healthy diet. For some, diabetes can be easily managed without medical intervention. According to Johns Hopkins Medicine, Americans consume more than 20 teaspoons of sugar a day; that’s well above the American Heart Association’s recommended 6 teaspoons a day for women and 9 for men. Added sugar can be found at high levels in most processed foods. To reduce sugar consumption, becoming familiar with nutrition facts found on packaged foods is a must. Not only does a diet high in sugar impede cognitive function, the impact on your heart can also be devastating. To help reduce the amount of sugar you consume in a day, check out some of these helpful tips: