Carb fasting compared
One table, then a full page on each comparison. Carb fasting is the column with two kinds of day; the others restrict something every day.
| Aspect | Carb fasting | Keto | Intermittent fasting | GLP-1 drugs |
|---|---|---|---|---|
| What you restrict | Carbs, on fast days only | Carbs, every day | The hours you eat in | Appetite, through the drug |
| Carbs allowed | Yes, on normal days | Rarely | Yes, inside the window | Yes |
| What you track | Which day it is | Carb grams, ketones | The clock | Doses, side effects, labs |
| When you stop | Fast days are a habit you can pick back up | Glycogen and water return within days | Benefits fade with the window | Weight tends to return after stopping |
| Best fit | People who want to keep carbs and lose fat | People who like living very low carb | People who prefer to change timing, not food | People whose clinician recommends it |
The full comparisons
-
Carb fasting vs keto
Keto keeps carbs out for good. Carb fasting removes them on fast days only.
1 min read
-
Carb fasting vs intermittent fasting
Intermittent fasting limits when you eat. Carb fasting limits what you eat on set days.
1 min read
-
Carb fasting vs GLP-1 drugs
Ozempic and Wegovy suppress appetite while you take them. Carb fasting trains a habit you keep.
1 min read
-
Carb fasting vs a low-carb diet
Low carb is low every day. Carb fasting concentrates the restriction into fast days.
1 min read
-
Carb fasting vs carb cycling
Carb cycling tracks macros around training. Carb fasting has two day types and nothing to weigh.
1 min read
-
Coming off keto?
How to keep the fat-burning benefit of low-carb days without living without carbs.
The free book
The plan, the science, and 100 recipes. Free.
The Fat Switch by Greg Clement: The two-day plan, the science behind it, and 100 recipes. Enter your email and we send it over.