Allison Liu, a brain health coach and expert in helping people get their brain younger, healthier and stronger, struggled with early warning signs of memory loss in her late forties. Forgetting what she was saying in the middle of saying it, feeling increasingly irritable and struggling with panic attacks, she felt she was losing her sense of self. Adopting a science-based approach,
Your daily sweet indulgences might feel like a treat, but are they playing tricks on your brain? High-sugar diets have been shown to interfere with cognitive function, leading to brain fog, memory lapses, and difficulty focusing. Research has suggested that high sugar consumption may even contribute to the development of neurodegenerative conditions like Alzheimer’s disease. Maybe sugar is not as much of a treat as we think.
Several studies have also shown that a diet high in sugar can lead to structural changes in the brain, particularly shrinking the hippocampus, which is essential for mood regulation, learning new information and recalling memories. In addition, excessive sugar intake can trigger inflammation and oxidative stress in the brain, and disrupt the delicate balance of neurotransmitters. Over time, this can impair cognitive function and increase the risk of depression and anxiety. Protecting your brain from the detrimental effects of sugar is vital for maintaining mental sharpness and emotional well-being, especially as we age.
The insidious trick of sugar in your diet
Many of us unknowingly consume more sugar than we realize. Various forms of sugar aren’t just found in obvious places like energy drinks, cakes and sweets; they are often hidden in products we wouldn’t expect – things like salad dressings, granola bars, flavored yogurts, and even foods like crisps, ketchup and bread. These hidden sugars can make it hard to manage your sugar intake and even harder to break the cycle of sugar cravings.
It’s also easy to fall into the trap of using sweet snacks for quick energy boosts or as a treat during stressful times, but habits like this can backfire, leaving us feeling even more mentally drained in the long run.
But why does it matter? When we consume foods high in sugar or refined carbohydrates, they quickly spike our blood sugar levels. In response, our body releases insulin to bring those levels back down, often leading to a blood sugar crash. This roller coaster of highs and lows can leave us feeling tired, irritable, and craving even more sugar. Over time, chronically high blood sugar levels can impact our metabolism and immune system, and increase the risk of chronic conditions like diabetes or heart disease.
What might have felt like a harmless indulgence in our twenties now carries heavier consequences in midlife, making it more important than ever to manage sugar intake.
The treat: What happens when you cut back
While cutting back on sugar might sound like a big step, it can feel like a real treat to your body and mind. When you reduce your intake of added sugars – and refined carbohydrates like white flour and white rice – you stabilize your blood sugar levels, leading to more consistent energy throughout the day. The result? Fewer cravings, improved mood, and better mental clarity.
Many people who reduce their sugar intake report feeling sharper, more focused, and emotionally balanced. You might notice improved sleep, a reduction in joint pain, and even clearer skin. And for those concerned about midlife weight gain, cutting back on sugar can help reduce fat around the middle, making it easier to manage weight.
For brain health, the benefits are just as powerful. Studies have shown that cutting sugar can improve memory and concentration, and in the long term, lower the risk of developing cognitive decline. This is especially important as we age and look for ways to stay mentally sharp.
Practical steps to regain control of your sugar intake
Regaining control of how much sugar you eat doesn’t have to feel overwhelming. Here are a few practical strategies to get started:
1. Read labels carefully
Sugar hides in many processed foods, so check ingredient lists for anything ending in “-ose” (glucose, sucrose) or terms like corn syrup and fruit juice concentrate. I explore this more in my article Unveiling The Sweet Deception – How Sugar Impacts Your Health And Brain
2. Swap refined carbs for whole grains
Replace white bread, pasta, and rice with whole-grain versions, which have a lower glycemic index and won’t cause sharp spikes in blood sugar.
3. Increase fiber and protein
Eating more fiber-rich foods like vegetables, nuts, and seeds can help keep you full and reduce sugar cravings. Protein helps stabilize blood sugar levels, too.
4. Do a sugar detox
Consider taking part in a sugar fast or detox, such as the 40-Day Sugar Fast, to reset your taste buds and break the habit of reaching for sugary foods. A short program like this can help you kickstart healthier habits by providing tips, recipes, encouragement and community support to help you stay on track – and will ultimately change how you think and feel about sugar. If a fast would be too big a step for you, or there are medical reasons why it wouldn’t be appropriate, a partial fast by restricting intake to no more than 30g of added sugar a day could be a good place to start.
Start your journey to better health now
The choice is yours—trick or treat? When it comes to sugar, the treat might not be what it seems. With a few simple changes, you can avoid the tricks sugar plays on your health and mind, and instead, give yourself the ultimate treat: a body that feels energized and a mind that stays sharp. So why not ditch the sugar-filled tricks and reclaim your health for the long term?
If you are concerned that you might be addicted to sugar, I recommend this insightful article by Dr Nichelle Chandler: Is Sugar Addiction Real? – 5 Strikingly Similar Ways Sugar Over Consumption Mimics Drug Addiction
Allison Liu, Brain Health & Memory Rescue Coach
Allison Liu, a brain health coach and expert in helping people get their brain younger, healthier and stronger, struggled with early warning signs of memory loss in her late forties. Forgetting what she was saying in the middle of saying it, feeling increasingly irritable and struggling with panic attacks, she felt she was losing her sense of self. Adopting a science-based approach, which she uses with her clients today, she increased her own ‘brain reserve’, improving her memory, mood and relationships. She now coaches clients around the world through a personalised plan to prevent or slow down cognitive decline so they can remain present with those they love. Her mission: Staying sharp for life.
