Longevindex
How Not to Diet (Hardcover)

Equipment Reference

Michael Greger MD

How Not to Diet (Hardcover)

Greger’s weight-loss book — calorie density, fiber, and 21 accelerators

4.7
(6,900 community reviews)

The 2019 NutritionFacts weight-loss sequel: calorie density, insulin index, microbiome, and a list of ‘accelerators’ (vinegar, timing, sleep). More diet-mechanics than How Not to Die. Pair with Fung and Bikman if insulin is the actual problem — this book still wants plants first.

Used by
NutritionFacts readersHow Not to Die graduatesPeople tired of keto-vs-vegan fights

Typical price: $18 – $32 USD

How It Works

Popular synthesis of obesity and diet trials. Strongest on fiber and ultra-processed displacement. Weaker where every spice becomes a fat-loss lever. Not a substitute for GLP-1 care you already need.

1

Calorie Density

Eat foods that fill the stomach with fewer calories — vegetables, fruit, legumes. The practical grocery move.

2

Twenty-One Accelerators

Vinegar, cumin, sleep, timing. Steal two. Do not run all twenty-one as a personality.

3

Plant Default

Same lens as How Not to Die. Omnivores can steal density and fiber without converting religion.

What You'll Experience

Reading

2 weeks

Most readers change breakfast density before finishing the accelerator list.

Kitchen

Month 1

Beans and greens again. B12 if animal foods drop. Protein-longevity still matters after 50.

Benefits

Grocery-First Weight Loss

Moderate Evidence

A checklist instead of a celebrity cut.

Completes the Greger Shelf

Moderate Evidence

Die / Age / Diet as the three NutritionFacts hardcovers.

Risks & Considerations

Vegan Nutrient Gaps

medium risk

B12 and protein still need a plan if meat leaves the plate.

Not a GLP-1 Protocol

medium risk

If you are already on semaglutide, this is food quality — not a reason to stop a prescribed drug.

Community Reviews

Synthesized consensus from Reddit, forums, and expert sources.

Amazon verified readers
Mostly Positive

Praised as thorough; critics call it long and vegan-leaning. Calorie density is the part people keep.

  • ·608 pages
  • ·Calorie density
  • ·Daily Dozen still applies

Last updated: 2026-09-22 · Informational only. Not medical advice. Health disclaimer.