The problem
Why most food burns fast
A quick lift, then it wears off. Here is what that costs you, and the studies that show it.
Running out early
A light meal runs out sooner
How long a meal holds depends partly on what is in it: enough calories, protein and fiber.
01
Bigger breakfasts held longer
After the biggest breakfast, people asked for their next meal over an hour later than after the smallest.
Timed to when people asked for food, not to a clock.
Callahan et al., 200402
Protein holds it off
The appetite benefit of protein shows from about 25 to 30 g in a meal.
Why protein counts toward how long a meal holds.
Leidy et al., 201503
About five hours to lunch
Adults in the US go about 5 hours from breakfast to lunch, and about 6 from lunch to dinner.
The gap a meal has to cover to hold till the next one.
Kant & Graubard, 2015Cravings
The dip after sugar is where cravings start
Two to three hours after a sugary meal, many people dip below where they started. That dip is a hunger signal.
01
The dip predicts hunger
The drop below baseline predicts hunger and the next meal better than the peak does.
One of the largest studies of its kind.
Wyatt et al., Nature Metabolism, 202102
Sugar dips, starch does not
Sugary foods fall below baseline by two hours. Starchy foods stay above it.
The reference database the whole field uses.
Brand-Miller et al., 200903
Replicated in 2026
Any dip brings the next meal about 27 minutes sooner. More than half of everyday meals dipped.
An independent group, real-life meals, the same answer.
Yao et al., JAMA Network Open, 2026You eat more
The people who dip the most eat the most
Not a willpower problem. The same dip that brings hunger back brings the next meal forward and makes it bigger.
01
About 312 more calories a day
The biggest dippers ate 75 more calories at the next meal and 312 more over the day.
Logged, not recalled. The dip explained it better than the peak.
Wyatt et al., Nature Metabolism, 202102
More dip, more hunger
Every 10 percent deeper dip adds hunger at two to four hours and brings the next meal sooner.
A dose response, step by step, is hard to get by chance.
Yao et al., JAMA Network Open, 202603
Eating, not tiredness
The dip predicted eating. Its link to alertness was small and not significant.
Why the card says you eat more, and never says weight.
Wyatt et al., Nature Metabolism, 2021Straight up
What we do not claim
The page stops where the evidence stops.
The battery does not read tiredness.
The dip predicts hunger, not how alert you feel. So the battery reads hunger.
No food fixes the afternoon slump.
Part of it is your body clock. Food can make it worse, or not.
Nothing here is about weight.
The evidence is about eating more, and that is where we stop.
No number for how you will feel.
The battery predicts how long a meal tends to hold for a typical person. It is not measured from you.
Not a medical claim.
Bazu rates food. It does not prevent or treat anything.
For informational use only. Not medical advice. Every source behind Bazu is on the research page.
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