newstart_MO said:

The mechanism is more central than most summaries suggest.

That reframing is the part I needed. Sending this to two other people who asked me the same thing last week.

Adding the clinical framing, because it changes how the question reads.

Dizziness and cardiovascular risk: I was lightheaded for the first 3 weeks. Root cause was a combination of reduced caloric intake and mild dehydration.

Fix: minimum 80-100oz water daily, don't skip meals even if you're not hungry (eat small protein-rich snacks), and stand up slowly from sitting/lying positions. Also check your blood pressure — GLP-1-induced weight loss can make BP meds too strong, requiring dose reduction.

DeniseRN_TPA said:

I want to bring up the cardiovascular angle on cardiovascular risk.

CRP reduction on cardiovascular risk — this is the lab result that excites me most:

Baseline hsCRP: 8.0 mg/L (high cardiovascular risk)
Month 6 hsCRP: 1.5 mg/L (moderate risk)
Month 12 hsCRP: 0.8 mg/L (low risk)

This level of inflammatory marker reduction is comparable to what you'd see with statin therapy. Combined with the weight loss, my 10-year ASCVD risk score dropped from 15% to 4%. My cardiologist is genuinely impressed.

Dr.RenalNash said:

SELECT is the trial that changed the framing of this class, because it was an outcome trial rather than a weight trial: about a 20% relative reduction…

Cardiac biomarkers and cardiovascular risk: my cardiologist ordered advanced cardiac labs given my family history. Results were encouraging:

• NT-proBNP: 52 pg/mL (normal, cardiac function preserved)
• Lp(a): 32 nmol/L (genetic, unchanged — expected)
• ApoB: dropped from 137 to 92 mg/dL (excellent response)
• Coronary calcium score: 0 (unchanged from baseline — reassuring)

The ApoB reduction is particularly meaningful — it's considered the best single predictor of cardiovascular risk. GLP-1 therapy seems to improve this consistently.

Moderator note: the sourcing question belongs in the vendor section and has been split out. Tagging this one for the weekly digest.