Glycemic Index (GI)
The glycemic index describes how quickly a carbohydrate-containing food raises blood sugar on a scale of 0-100.
The glycemic index (GI) measures how quickly a food's carbohydrates are absorbed and raise blood sugar compared to pure glucose (GI = 100). Low GI foods (below 55) raise blood sugar slowly; high GI foods (above 70) raise it quickly.
A rapid blood sugar rise causes the pancreas to secrete large amounts of insulin, which can lead to a rapid blood sugar drop and renewed hunger. Low GI foods keep you full longer and help stabilize energy levels.
Practical examples: whole grain bread (GI ~50), white bread (GI ~75), oats (GI ~55), sweet potato (GI ~50). Fiber content, fat, and protein lower a meal's overall GI.
However, it's important to remember that GI describes only the effect of a single food. In real meals, different foods are combined, so the overall effect may differ. In weight management, total calorie intake matters more than individual foods' GI values, but low GI choices support satiety and steady energy.
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Disclaimer: This page contains general health and wellness information and does not replace the advice of a doctor, dietitian, or other healthcare professional. Always consult your doctor before making significant changes to your diet or exercise routine, especially if you have underlying health conditions, are on medication, or are pregnant.
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