Weight Gain Sensitivity to Carbs

One thing I’ve often wondered about since starting this low carb journey is just what my personal sensitivity to net carbs is. In other words, how many grams of net carbs can I eat without gaining weight? I’ve now got a 150 day long data set which gives me an answer. This chart shows how much the grams of carbs I eat one day affects my weight the next day.

About the chart:

  1. The vertical axis is weight gained the next day.
  2. The horizontal axis is grams of carbs.
  3. The red line on the chart is a 3rd order polynomial trendline as determined by EXCEL.

At less than 20 grams of carbs the line is pretty flat. It doesn’t seem like reducing my carbohydrates below 20 grams has much of a payoff in weight loss.

The turnaround point seems to be around 32 grams of net carbs. Past that point my weight gets progressively higher the next day.

From this I would conclude that my personal carbohydrate threshold is around 32 net grams of carbohydrates but that I can tolerate up to around 40 net grams without a large effect.


Author: Doug

I'm an Engineer who is also a science geek. I was pre-diabetic in 1996 and became a diabetic in 2003. I decided to figure out how to hack my diabetes and in 2016 found the ketogetic diet which reversed my diabetes.

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