**Protein Sparing Modified Fasting (PSMF)**

PSMF is a low calorie diet that aims to promote rapid weight loss while preserving lean body mass (muscle). It involves eating mostly protein-rich foods and minimizing the intake of carbohydrates and fats. It is designed to jump start a weight loss program for rapid fat loss or to break a stall. PSMF is not a long-term diet plan, but rather a short-term intervention that can help people with obesity or overweight achieve their weight loss goals.

----

**Helpful Links**

[PSMF Overview](https://www.reddit.com/r/PSMF/wiki/index/)

[PSMF Frequently Asked Questions](https://www.reddit.com/r/PSMF/wiki/faq)



[Atavis' PSMF Macro Calculator](http://forum.bodybuilding.com/showthread.php?t=118194401) | [Download](http://forum.bodybuilding.com/attachment.php?attachmentid=1977331&d=1249496549)

----

[Help Posts](https://www.reddit.com/r/PSMF/search?q=flair%3AHelp&restrict_sr=on&include_over_18=on&sort=new&t=all)

[Food Posts](https://www.reddit.com/r/PSMF/search?q=flair%3AFood&restrict_sr=on&include_over_18=on&sort=new&t=all)

[Progress Posts](https://www.reddit.com/r/PSMF/search?q=flair%3AProgress&restrict_sr=on&include_over_18=on&sort=new&t=all)

All things relating to Protein Sparing Modified Fasting (PSMF)

PSMF is a low calorie diet that promotes rapid weight loss while preserving lean body mass (muscle). It involves eating mostly protein-rich foods and minimizing the intake of carbohydrates and fats. It is designed to jump start a weight loss program for rapid fat loss or to break a stall.