hyun_seoul said:NNT calculation for cardiovascular risk clinical endpoints: NNT = 1/ARR (absolute risk reduction).
I want to bring up the cardiovascular angle on cardiovascular risk.
The SELECT trial demonstrated a 20% reduction in MACE with semaglutide 2.4mg[1]. This is practice-changing because the CV benefit appears to be independent of the degree of weight loss — suggesting direct vascular and anti-inflammatory mechanisms.
For cardiovascular risk, this means we need to think beyond the primary outcome and consider the cardiovascular implications. The all-cause mortality reduction (HR 0.81) is the most clinically meaningful signal.
[1] Lincoff AM, et al. N Engl J Med. 2023;389(24):2221-2232.
hyun_seoul said:NNT calculation for cardiovascular risk clinical endpoints: NNT = 1/ARR (absolute risk reduction).
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.
One thing that is still open after hyun_seoul’s answer:
How would you tell the difference between that and the alternative explanation?
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Browse GL BiochemPeptideSynthNJ said:Dizziness and cardiovascular risk: I was lightheaded for the first 3 weeks.
Positive "side effect" of cardiovascular risk: my blood pressure dropped so much that I'm now off lisinopril entirely! My cardiologist is thrilled.
If you're on BP meds and losing weight on a GLP-1, monitor your BP at home regularly. Hypotension symptoms (dizziness, lightheadedness when standing) mean your BP meds may need reduction. Don't wait for your next scheduled appointment — call your doctor.
PeptideSynthNJ said:Dizziness and cardiovascular risk: I was lightheaded for the first 3 weeks.
Lp(a) and cardiovascular risk: a nuance that matters. Unlike most lipid markers, Lp(a) is 90%+ genetically determined and doesn't really change with weight loss or GLP-1 therapy.
My Lp(a) has remained at 81 nmol/L across all time points. If yours is elevated (>50 nmol/L), you need additional risk mitigation strategies regardless of your GLP-1 response. Don't assume your medication is covering all cardiovascular risk factors.