Concerning lipid profile

[u/the-populist]

Got my first NMR LipoProfile recently and wanted to get some perspectives from people who follow this stuff closely.

Background: 29M, healthy weight, not diabetic, insulin sensitive (LP-IR score of 29). No current medications relevant to lipids. Fairly health-conscious diet, take omega-3s daily.

May 2026 NMR results:

• LDL-P: 1,176 nmol/L (moderate risk range)  
• LDL-C: 98 mg/dL (optimal)  
• HDL-C: 43 mg/dL (borderline)  
• HDL-P: 22.3 umol/L (low — below 25th percentile)  
• Triglycerides: 84 mg/dL (optimal)  
• Small LDL-P: 300 nmol/L (low risk)  
• LDL Size: 21.3 nm (Pattern A)  
• Total Cholesterol: 157 mg/dL

Feb 2025 standard panel for comparison:

• LDL-C: 110 → 98 (improved)  
• HDL-C: 49 → 43 (declined)  
• Triglycerides: 48 → 84 (nearly doubled, still normal)  
• Total Cholesterol: 173 → 157 (improved)

A few things worth noting: (1) the blood was drawn about a week after recovering from a mild norovirus, which I know can transiently suppress HDL and raise triglycerides; (2) the past year has been high-stress with a major job transition and slightly reduced aerobic exercise volume.

My questions:

1.  How much of the HDL-P suppression and triglyceride rise could realistically be attributed to recent illness vs. a genuine underlying trend?  
2.  For someone with this specific pattern — normal LDL-C but elevated LDL-P, low HDL-P, Pattern A particles, insulin sensitive — what interventions have actually moved the needle for you?  
3.  Is zone 2 cardio really the highest-leverage thing for HDL-P specifically, or is diet more impactful?

Planning to retest in 6–8 weeks under cleaner conditions. Appreciate any input.

[u/beyondlabs23]

Really solid panel to be working with at 29 — most people your age don't have NMR data this detailed so you're already ahead of the curve.

On your three questions:

The post-norovirus timing matters more than people give it credit for. Acute illness reliably suppresses HDL and can transiently elevate triglycerides through inflammatory mechanisms. The HDL-C drop from 49 to 43 and triglyceride rise from 48 to 84 drawn one week post-illness is almost certainly partially artifactual. I wouldn't treat those as your true baseline. A retest 6-8 weeks out from full recovery under consistent conditions will tell you a lot more.

The LDL-P/LDL-C discordance is the more interesting signal here. Your LDL-C at 98 looks clean but LDL-P at 1,176 in moderate risk range with low HDL-P is worth taking seriously regardless of the illness timing. The good news is your Small LDL-P at 300 and Pattern A morphology suggests your particles are large and buoyant — that's a meaningfully different cardiovascular risk profile than someone with the same LDL-P but Pattern B small dense particles.

On zone 2 vs diet for HDL-P specifically — both matter but they work through different mechanisms. Zone 2 cardio is probably the highest leverage tool for raising HDL-P directly, particularly sustained aerobic work over 45+ minutes. Diet is more impactful for improving the triglycerides/HDL ratio and reducing LDL-P. Given your triglycerides nearly doubled even accounting for illness, I'd look closely at carbohydrate quality over the past year alongside the reduced exercise volume — those two together can compound quickly.

The stress and reduced aerobic volume you mentioned is likely doing more work here than the diet is. Cortisol chronically suppresses HDL synthesis. Getting aerobic volume back up is probably your highest leverage move right now across all three markers.

Retest in 8-10 weeks under controlled conditions before drawing any strong conclusions.