Is 800 Calories a Day Unsafe? | Ep 368

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Why do some people thrive on far fewer calories than others (who might be miserable eating at that level)?

When we talk about whether 800 calories a day is "unsafe," we're asking the wrong question. After all, your size, training, activity level, and energy needs are unique to you and can vary widely among the population.

Learn why there's no universal unsafe calorie number, how to determine your own metabolic limits using biofeedback, and the critical trade-offs between aggressive deficits and sustainability. 

Main Takeaways:

• There's no universal "unsafe" calorie number
• Metabolic adaptation is real but reversible, not permanent "damage"
• Use biofeedback (energy, sleep, strength, mood) as your personalized guide rather than arbitrary rules
• The trade-offs between speed, sustainability, and metabolic preservation require intentionality

Episode Resources:

• Wits & Weights Facebook Community - Connect with others who understand nutrition isn't about universal rules

Timestamps:

0:50 - The obsession with 800, 1200, and 1500 calories
5:18 - The reality of individual energy needs
8:50 - Very low-calorie diets (VLCDs) in clinical settings
10:30 - The Optavia problem
16:14 - Metabolic adaptation vs "metabolic damage"
19:28 - Speed vs. sustainability vs. metabolism
20:44 - Using biofeedback as your personalized compass
24:23 - The non-negotiables
25:29 - Context vs. absolutes

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