Most men over fifty get a standard cholesterol panel, see "normal", and assume the cardiometabolic story is settled. It rarely is. Total cholesterol and LDL-C miss two markers that carry most of the risk signal at this age: visceral fat and ApoB. Both are measurable, both are modifiable, and both respond to the same set of inputs.

Why the standard panel falls short

A typical lipid panel reports total cholesterol, HDL, LDL-C, and triglycerides. LDL-C estimates the cholesterol carried inside LDL particles. It does not count the particles themselves.

Two men can present with identical LDL-C and very different particle counts. The man with more particles, often smaller and denser, carries more atherogenic cargo into the arterial wall. After fifty, when insulin resistance and visceral adiposity climb quietly, this mismatch becomes common. The panel reads "fine". The biology is not.

ApoB: one particle, one count

Every atherogenic lipoprotein, LDL, VLDL, IDL, Lp(a), carries one ApoB molecule on its surface. Measure ApoB and you count the particles directly. No estimation, no assumption about particle size.

For men over fifty, ApoB is the cleaner read on cardiovascular risk than LDL-C alone. The test is inexpensive in NZ, available through most labs with a GP request, and stable enough to track over months rather than weeks.

General reference ranges:

  • Population average: around 1.0 to 1.2 g/L
  • Lower risk target for primary prevention: under 0.9 g/L
  • Aggressive target for those with existing risk factors: under 0.8 g/L

We work alongside your GP on interpretation and any medication decisions. Our role is the nutrition and training inputs that shift the number.

Visceral fat: the metabolic engine room

Subcutaneous fat sits under the skin. Visceral fat sits inside the abdominal cavity, wrapped around the liver, pancreas, and gut. It is metabolically active in ways subcutaneous fat is not. It releases free fatty acids directly into the portal vein, drives hepatic insulin resistance, raises VLDL output, and pushes ApoB up.

This is why the two markers travel together. A man with rising visceral fat almost always has rising ApoB, even if his weight on the scale has barely moved.

BMI misses this entirely. Waist circumference catches some of it. A BIA scan with segmental analysis, which we run on every client, gives a usable visceral estimate and a baseline to track against. Across our 1,300+ client coaching base, the pattern is consistent: men aged 50 to 65 carrying visceral fat above the healthy threshold almost always show elevated ApoB when they test.

The scale can stay still for a year while visceral fat climbs and ApoB drifts upward. The mirror lies. The markers do not.

What actually moves them

The inputs overlap, which is convenient. Reduce visceral fat and ApoB tends to follow. The levers, in order of impact:

Protein and fibre first. Most men over fifty undereat both. Aim for 1.6 to 2.2 g of protein per kg of target bodyweight, and 30 to 40 g of fibre daily. Protein protects lean mass during fat loss. Soluble fibre, from oats, legumes, kūmara, and fruit, lowers ApoB through bile acid binding.

Reduce refined carbohydrate and alcohol. Both drive hepatic de novo lipogenesis, which raises VLDL and ApoB. Alcohol also parks fat preferentially in the visceral depot. Two drinks a night is not neutral at this age.

Saturated fat: contextual, not catastrophic. For men with elevated ApoB, reducing saturated fat below 10% of total energy usually drops the number. This is not a moral position on butter. It is a dose response. Replace with monounsaturated fats: olive oil, avocado, nuts.

Resistance training, three to four sessions weekly. Muscle is a glucose sink. More muscle means better insulin sensitivity, less visceral storage, and lower hepatic VLDL output. Compound lifts, progressive load.

Zone 2 cardio, 150 to 180 minutes weekly. Improves mitochondrial function and fat oxidation. Walking briskly counts if the heart rate sits in the right range.

Sleep and stress. Cortisol drives visceral fat storage independently of calories. Seven to eight hours, consistent timing.

How to test and track

Ask your GP for ApoB alongside the standard lipid panel. If Lp(a) has not been measured once in your life, request it. It is largely genetic, measured once, and changes the risk calculus.

For visceral fat, a BIA scan with segmental output gives a working number. Re-scan every 8 to 12 weeks. ApoB can be retested every 12 to 16 weeks once you have made dietary changes. Earlier than that and you are reading noise.

Track the trend, not the single result. Three data points in a line tell you more than one in isolation.

What to do this week

  • Book an ApoB test through your GP, with Lp(a) added if you have never had it measured.
  • Get a baseline BIA scan with visceral fat estimate, or measure waist at the navel as a proxy.
  • Lift protein to 1.6 g per kg of target bodyweight, starting at breakfast.
  • Cut alcohol to two standard drinks per week for the next eight weeks and observe.
  • Schedule three resistance sessions and two Zone 2 walks into next week's calendar before the week begins.