GLP-1 agonists · mechanism / efficacy / real cost

Story

Connected to · 2

regulates · 2

Leptin Resistance / Set-point
GLP-1 drugs do not repair leptin resistance; they go around that sluggish circuit and act directly on the appetite-regulating neurons in the brain. That helps explain why they still work for people who have already done the lifestyle work, and why weight often comes back after stopping.
Weight Management · Foundations
Weight-loss drugs are a legitimate choice, not a sign of failure, but the full account matters: in the STEP-1 trial, semaglutide 2.4 mg once a week for 68 weeks produced an average weight loss of 14.9%, against 2.4% on placebo, and most of the weight tends to come back after stopping. This is long-term treatment for a chronic condition, not a single course.

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Stop 1/5

What GLP-1 drugs are

EVIDENCEGUIDE 1 · RCT 2

READ THE ORIGINAL

Your gut already has a natural I'm full signal. What these drugs do is simple: they amplify that signal and make it last longer in the body, so you do not feel like eating as much.

The signaling molecule is called (glucagon-like peptide-1), and no drug company invented it: every time you finish a meal, L cells in the lower small intestine release it into the blood. An enzyme called DPP-4 acts like scissors that cut it specifically, so it survives only 1–2 minutes. The whole trick of turning it into a drug is changing the molecule so the scissors no longer recognize it, letting it stay in the body for a long time.

It drifts to several places and does one job at each: at the pancreas, it prompts insulin release only when blood glucose is high (so, unlike sulfonylureas, it does not push insulin out regardless of glucose); it holds down glucagon, so the liver sends less sugar into the blood; it slows gastric emptying, so fullness lasts longer; and in the brain's appetite centers (the hypothalamus and brainstem), it directly turns down the still want to eat signal.

If you develop severe, persistent upper abdominal pain (it may spread to the back) with vomiting while taking one of these drugs, stop the drug and get medical care immediately.

Educational content, not medical advice — consult a clinician.

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GLP-1 agonists · mechanism / efficacy / real cost

Story

Connected to · 2

regulates · 2

Leptin Resistance / Set-point
GLP-1 drugs do not repair leptin resistance; they go around that sluggish circuit and act directly on the appetite-regulating neurons in the brain. That helps explain why they still work for people who have already done the lifestyle work, and why weight often comes back after stopping.
Weight Management · Foundations
Weight-loss drugs are a legitimate choice, not a sign of failure, but the full account matters: in the STEP-1 trial, semaglutide 2.4 mg once a week for 68 weeks produced an average weight loss of 14.9%, against 2.4% on placebo, and most of the weight tends to come back after stopping. This is long-term treatment for a chronic condition, not a single course.

Read full story

Stop 1/5

What GLP-1 drugs are

EVIDENCEGUIDE 1 · RCT 2

READ THE ORIGINAL

Your gut already has a natural I'm full signal. What these drugs do is simple: they amplify that signal and make it last longer in the body, so you do not feel like eating as much.

The signaling molecule is called (glucagon-like peptide-1), and no drug company invented it: every time you finish a meal, L cells in the lower small intestine release it into the blood. An enzyme called DPP-4 acts like scissors that cut it specifically, so it survives only 1–2 minutes. The whole trick of turning it into a drug is changing the molecule so the scissors no longer recognize it, letting it stay in the body for a long time.

It drifts to several places and does one job at each: at the pancreas, it prompts insulin release only when blood glucose is high (so, unlike sulfonylureas, it does not push insulin out regardless of glucose); it holds down glucagon, so the liver sends less sugar into the blood; it slows gastric emptying, so fullness lasts longer; and in the brain's appetite centers (the hypothalamus and brainstem), it directly turns down the still want to eat signal.

If you develop severe, persistent upper abdominal pain (it may spread to the back) with vomiting while taking one of these drugs, stop the drug and get medical care immediately.

Educational content, not medical advice — consult a clinician.