In the complex world of fitness nutrition, few ingredients spark as much debate as sugar. Now, prominent weight loss physician Dr. Hsiao Chieh-chien is cutting through the confusion with a detailed breakdown that challenges conventional dietary wisdom. In a recent social media post that has caught the attention of health enthusiasts in Hong Kong, Dr. Hsiao argues that not all sugars are metabolic enemies—but choosing the wrong one could be sabotaging your physique as surely as “drinking oil.”
The Fructose Trap: When Stable Blood Sugar Isn’t Enough
Many dieters believe that as long as their blood sugar levels remain stable, their bodies are in the clear. Dr. Hsiao warns this is a dangerous misconception. He highlights fructose as the primary culprit. While fructose doesn’t spike blood glucose like table sugar does—often helping it fly under the radar on health tests—its metabolic impact is far more insidious.
According to the doctor, fructose is rapidly converted into triglycerides in the liver, driving fatty liver disease and gradually impairing mitochondrial function. “This is why some sugars are just like drinking oil,” he explains. “They bypass your blood sugar monitor entirely but go straight to your fat stores and slow down your energy-burning engines.”
Glucose: The Muscle Fuel That Demands Respect
In stark contrast, Dr. Hsiao points to glucose as a valuable tool for muscle gain. Glucose is designed to be stored as glycogen in skeletal muscle, providing the fuel necessary for explosive performance and recovery during strength training.
However, there is a catch. If you consume highly refined, high-glycemic starches in excess, your body secretes too much insulin. This hormonal flood signals the body to store any glucose that cannot fit into the muscles directly as body fat. The key, Dr. Hsiao emphasizes, is not to eliminate glucose but to control how and when you consume it.
Actionable Strategy: The Right Order to Eat Your Carbs
Dr. Hsiao offers a simple, science-backed protocol for those looking to enjoy starches while building a leaner physique. He recommends creating a “digestive buffer” before touching your rice or noodles.
- Start with a portion of lean protein (roughly the size of your palm), such as meat, tofu, eggs, or a protein shake.
- Follow this with two fistfuls of fiber from vegetables.
- Only then should you consume your refined carbohydrates.
This sequence dramatically slows the absorption of glucose. Instead of triggering a sharp insulin spike that packs on fat, the sugar is released steadily, allowing it to be shuttled into waiting muscle tissues for recovery and growth.
Ranking the Sweeteners: Beyond Glucose and Fructose
So, which sugar is best? Dr. Hsiao lays out a clear hierarchy for optimal health and body composition.
- Fructose / High Fructose Corn Syrup: The worst offender. Highest risk for fatty liver and mitochondrial damage.
- Sucrose (Table Sugar): Better than pure fructose, but still problematic in excess.
- Glucose: Good for muscle fuel, but requires discipline in portioning and timing.
- Monk Fruit (Luo Han Guo), Stevia, and Arabinose: The gold standard. Dr. Hsiao explains these natural sweeteners do not impair mitochondria, do not stimulate insulin secretion, are not stored as fat, and some even act as prebiotics that feed healthy gut bacteria.
The doctor’s overarching message offers a liberating takeaway for Hong Kong food lovers: you do not have to fear sweetness to achieve a lean, muscular physique. Instead, the key lies in understanding the profound biological difference between the sugars on your plate. By prioritizing glucose for fueling workouts, strictly limiting hidden fructose, and reaching for natural, plant-based sweeteners when a sweet tooth strikes, it is entirely possible to enjoy the taste of sugar while actively supporting your fitness goals.