Net carbs are total carbohydrates minus fiber and often sugar alcohols. Keto and low-carb diets use them to track daily carb intake.

Is this medical advice?

No. These calculators provide estimates for education only. Work with your healthcare provider — especially if you have diabetes, take insulin, or manage blood pressure medications.

How long should I fast?

Dr. Mindy Pelz starts most people at 13–16 hours. Autophagy benefits increase around 17 hours. Extended 24–72 hour fasts need medical awareness — especially on medications.

Which calculator should I use first?

Use the net carb calculator when reading a food label. Use the macro calculator for daily targets. Use the fasting clock when you are ready to track fasts after low-carb eating feels stable.

Insulin resistance · 7 min read

PCOS and Low Carb — What the Research Suggests

How insulin resistance links to PCOS symptoms and why many providers discuss carb reduction — not a treatment plan.

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PCOS calculator →

Insulin and PCOS

PCOS often involves insulin resistance, which drives higher insulin and can worsen androgen symptoms. Lower-carb diets may improve metabolic markers for some women — individual results vary.

Practical starting points

Discuss targets with OB/GYN or endocrinologist
Start ~50g net carbs with adequate protein
Consider cycle-aware fasting (shorter fasts in luteal phase — Dr. Mindy)
Track cycles, energy, and labs — not just scale weight

Frequently asked questions

Will low carb regulate my period?

Some women see improved cycle regularity as insulin improves. Others need additional treatment. Do not replace medical care with diet alone.

Insulin resistance

Net Carbs for Insulin Resistance — How Many Per Day?

How to calculate net carbs from food labels and choose daily targets for blood-sugar-friendly eating and metabolic health.

7 min read

Fasting

16:8 vs 18:6 Intermittent Fasting — Which Is Right for You?

Compare 16-hour and 18-hour intermittent fasting windows. Beginner-friendly guide with Dr. Mindy and Dr. Westman principles for low-carb eaters.

8 min read

Metabolic Low Carb Calculator provides educational content only — not medical advice, diagnosis, or treatment. Talk to your healthcare provider before changing diet, fasting, or medications. Read disclaimer