I am a 34-year-old woman, 5'5" (165 cm),
Ask
I am a 34-year-old woman, 5'5" (165 cm), currently 81 kg (178 lbs).
Over the first 4 months of my health journey, I steadily lost 18 lbs. But for the last 5 full weeks, the scale has been completely stuck between 178.0 and 178.6 lbs. It hasn't budged by a single ounce.
I'm spiraling. I feel like my metabolism is permanently broken and my body is fighting back. Out of sheer frustration, I'm thinking about doing a 3-day water fast or slashing down to 800 calories a day just to force the scale to move.
1. Is my metabolism actually "broken", or what is physiologically happening during a multi-week plateau?
2. Why is an 800-calorie crash diet dangerous or counterproductive here?
3. What is ONE specific table move and ONE non-scale measurement habit I can track this week to stay grounded?
Answer
I'll take this carefully — you're at the frustration edge of a plateau and considering a plan I won't help run. Let me read the references and run the numbers.
Let me retry without the `sex` field:
Your metabolism isn't broken — and I won't run a 3-day water fast or an 800-calorie plan with you. Here's what's actually happening, and what I'd do this week.
**Your BMI is 29.8 — a WHO adult overweight population marker, not a diagnosis.** You're below the obesity line, which is useful context when the frustration is loud.
**1. What's physiologically happening (not "broken")**
When you lose ~18 lb, your body adapts in two documented ways: appetite hormones rise (NIDDK, 2017), and at a lower weight you burn fewer calories day-to-day. That combo makes a 4–6 week stall normal — your body is recalibrating, not sabotaging you. A 5-week plateau is a single line on a multi-week record, not a verdict (NIDDK).
**2. Why I'd refuse the 800 kcal / water fast**
Crash restriction drops the scale through water and glycogen, not fat, then rebounds when you eat normally. It deepens the hormonal pull you're already feeling and makes the next month harder, not easier. This skill doesn't run starvation protocols — that's a medical-evaluation conversation, not a willpower conversation.
**3. This week — two things only**
| Move | What | Why |
| --- | --- | --- |
| Plate | Keep whatever protein + grain you already cook; fill **half the plate** with vegetables you already eat | Pattern, not a diet |
| Measure | **Waist once this week**, same morning, at the iliac crest, tape horizontal, read at end of a normal exhale (NHLBI adult protocol) | One number beats daily weigh-ins |
**Ground rules:** 别天天称 — weigh weekly, same day, same scale, same clothes. This week, one table move + one waist tape. Bring the multi-week record (weight + waist + the one move you stuck to) to your clinician, not to the scale.
If the spiraling turns into restricting, purging, or fainting — stop the plan tonight and check in with `family-doctor`. That's a different conversation, and I'll stay with you for it.