Losing Inches but Not Weight on Keto

Quick answer: If your waist, hips or clothes are shrinking while the scale sits still, you're very likely still losing fat. The scale weighs everything at once: fat, muscle, water, food in transit. Water shifts can hide fat loss for weeks, and if you're training, a little muscle gain can offset some of it. KetoDick prefers tape and photos to the scale for exactly this reason (video UygKGoP_BtA).

On this page

• Why the scale and the tape disagree
• Water: the big one
• Muscle: the slow one
• How to measure so you can trust it
• What the research says
• KetoDick's take
• When it's actually a stall
• Key takeaways
• Related

Why the scale and the tape disagree

The scale gives you one number for your whole body. It can't tell you which part changed. The tape measures one thing, the size of you, and fat takes up a lot of room for its weight.

So when they disagree, ask what could add weight without adding size. Two answers cover almost every case: water and muscle.

Water: the big one

Water moves faster and further than fat ever will. KetoDick's schedule for the first weeks goes like this (video uDw65ERtsA0):

• Week one: mostly water, as glycogen is flushed. Glycogen is stored with about twice its weight in water.
• Weeks two and three: gut upset, low energy, and a stall for most people.
• From about week four: real fat loss, roughly half a pound to three pounds a week depending on your size and old diet.

Weeks two and three are exactly when people start noticing their jeans fit better while the scale won't move. The fat is going; the water hasn't settled yet. He also describes fat cells holding water for a while after they give up their fat, then releasing it later (video f9P8BPWHc4U). See The keto whoosh effect.

Muscle: the slow one

If you've started lifting, some of the gap may be muscle. Muscle is dense, so a little added muscle takes less room than the fat it replaces, but it still weighs something.

Be realistic about the size of this. Building muscle is slow, and for most people the bigger reason for an inches-not-pounds month is water. But it's real, and it's one reason KetoDick tells people to err on the high side with protein rather than cutting it to break a stall: cutting protein, he says, often just loses muscle (video UygKGoP_BtA).

How to measure so you can trust it

His method is low-tech (video UygKGoP_BtA): take photos from day one, and measure with a tape or a piece of string. He describes taping yarn to the wall to mark your measurement so you can see the change. Whatever you use, make it repeatable:

1. Same time of day. Morning, after the bathroom, before eating.
2. Same spots. Waist at the navel, hips at the widest point, one thigh, one upper arm. Write down where.
3. Same tension. Snug, not pulling. Or use string and mark it, so tension can't creep.
4. Same photos. Front and side, same lighting, same clothes.
5. Measure every two to four weeks, not daily. Inches move slowly too.

Then keep the scale in its place. He suggests skipping it for the first 30 days, then weighing weekly or every two weeks (video uDw65ERtsA0). More in How often should you weigh yourself?.

What the research says

The evidence pages on this site don't include studies on tape measurements versus scale weight. They do show that body composition can change in ways the scale hides:

• Fat down, lean mass up, at the same time. In 40 young men on about a 40% energy deficit with intense training for four weeks, the group eating 2.4 g/kg/day of protein gained lean mass and lost more fat than the group eating 1.2 g/kg/day (Longland et al., 2016). That was men, a hard training programme and only a month, so don't expect the same, but it shows fat loss and muscle gain can overlap.
• Higher protein protects lean mass while dieting. Across 24 trials with 1,063 people, energy-restricted high-protein diets gave modestly more fat loss and less fat-free-mass loss (Wycherley et al., 2012).
• Training plus protein adds muscle. Across 49 trials with 1,863 people, protein supplementation increased resistance-training gains in fat-free mass, with a plateau around 1.6 g/kg/day (Morton et al., 2018).
• Older adults keep more with more protein. In 2,066 adults aged 70 to 79 followed for three years, those eating the most protein lost about 40% less lean mass than those eating the least (Houston et al., 2008).

KetoDick's take

He's consistent that the scale is a weak tool early on. He calls first-month weight not a "key performance indicator" (video xyEZL0HuejI), says the scale exaggerates slips (video UygKGoP_BtA), and tells people that what matters is body-fat weight, not early water (video cTGYIFOTPl8).

His protein rule of thumb is about 80 g a day for women and 100 g for men, plus 20 if you're tall and 20 more if you train hard (video UygKGoP_BtA). The trials above use grams per kilogram, and for many readers they land higher. A 70 kg (154 lb) woman at 1.6 g/kg would be eating about 112 g. That's a real difference between his starting rule and the training studies; both are laid out in How much protein.

When it's actually a stall

Inches-not-weight is good news for a few weeks. It's a stall if both the tape and the scale stop moving for a month or more, after month one. At that point, see Keto plateau after two or three months.

And if you have kidney disease, talk to your doctor before pushing protein up toward the trial numbers.

Key takeaways

• The scale weighs water, muscle, fat and food at once. The tape tracks size.
• Water shifts, especially in weeks two and three, often hide real fat loss.
• If you're lifting, a little muscle gain can offset some fat loss on the scale.
• Measure every two to four weeks, the same way each time, and take day-one photos.
• Keep protein up; cutting it to break a stall tends to cost muscle.

Related

• Guide: Plateaus · Non-scale victories · Recomposition · How much protein
• Blog: The keto whoosh effect · Can you build muscle on keto? · How often should you weigh yourself? · The week-three stall
• Videos: Keto basics for beginners · The typical keto weight-loss schedule · I gained 5 pounds · Beginner keto questions and tips