Wednesday, June 24, 2026

From LDL & HDL to LLD & HLD: A Project Manager's Guide to Reading Blood Test Reports

Yesterday, during a customer meeting, the discussion unexpectedly moved from project documentation to health checkups.

The customer was reviewing his blood test report and confidently said:

"Doctor says my LLD is high, but HLD is also improving."

For a moment, my project management instincts kicked in.

LLD? Low-Level Design?

HLD? High-Level Design?

Then reality returned. He meant LDL and HDL.

But the accidental terminology crossover sparked an interesting thought: what if we interpreted a blood test report the way IT professionals interpret a project report?

Let's explore.


HDL (Good Cholesterol) = HLD (High-Level Design)

Every successful project starts with a strong High-Level Design.

It provides direction, structure, governance, and strategic clarity.

Similarly, HDL (High-Density Lipoprotein) is the "good cholesterol." It helps remove excess cholesterol from the bloodstream and keeps things running smoothly.

Health WorldProject World
HDLHLD
Provides protectionProvides direction
Higher is generally betterBetter HLD means fewer surprises
Prevents future problemsPrevents future rework

Conclusion: A project with a solid HLD and a body with healthy HDL are both set up for long-term success.


LDL (Bad Cholesterol) = LLD Gone Wrong

Low-Level Design is essential.

However, excessive documentation, over-engineering, and unnecessary complexity can become project cholesterol.

LDL (Low-Density Lipoprotein) tends to accumulate where it shouldn't.

Similarly, poorly controlled LLDs tend to generate:

  • Excessive dependencies

  • Complicated workflows

  • Technical debt

  • Endless review meetings

Health WorldProject World
High LDL creates blockagesExcessive complexity creates bottlenecks
Restricts flowRestricts progress
Requires interventionRequires redesign

Conclusion: Some LDL is necessary. Some LLD is necessary. Too much of either creates operational challenges.


Triglycerides = Pending Action Items

Every project has them.

Open tickets.

Pending approvals.

Unresolved risks.

Deferred decisions.

Individually harmless.

Collectively dangerous.

Just as elevated triglycerides indicate excess stored energy, a project overloaded with pending actions stores unfinished work that eventually slows delivery.


Blood Pressure = Project Pressure

A little pressure keeps things moving.

Too much pressure causes damage.

In medicine, sustained high blood pressure strains critical systems.

In projects, sustained management pressure leads to:

  • Burnout

  • Escalations

  • Quality issues

  • Resignations

Both doctors and project managers should remember:

Pressure is a metric, not a strategy.


Hemoglobin = Team Productivity

Hemoglobin carries oxygen.

Productive teams carry projects.

When hemoglobin levels are low, fatigue follows.

When team productivity is low, deadlines begin to drift.

In both cases, management's first reaction is usually the same:

"Let's investigate the root cause."


Vitamin D = Stakeholder Support

Everyone ignores it until it becomes a problem.

Projects with inadequate stakeholder support resemble people with Vitamin D deficiency:

  • Progress slows

  • Morale drops

  • Unexpected symptoms appear

  • Everyone wonders why things feel difficult

The prescription is remarkably similar:

Get more exposure.


HbA1c = Technical Debt Index

HbA1c doesn't tell you what happened yesterday.

It tells you what has been happening for months.

Technical debt behaves exactly the same way.

A project may appear healthy during a sprint review, but accumulated shortcuts eventually show up in architecture assessments just as HbA1c reveals long-term sugar management.


ECG = Project Audit

Nobody schedules one because they're excited.

They schedule one because they want assurance that everything is functioning correctly.

The findings are also similar:

  • Normal

  • Minor observations

  • Needs monitoring

  • Please come back immediately


Final Diagnosis

A healthy professional should monitor:

  • HDL

  • LDL

  • Blood Pressure

  • HbA1c

A healthy project should monitor:

  • HLD

  • LLD

  • Team Pressure

  • Technical Debt

And if a customer ever tells you that his LLD is high and HLD is improving, don't correct him immediately.

First ask:

"Are we discussing your health report or your project status report?"

Because in today's world, either answer could be correct.

From LDL & HDL to LLD & HLD: A Project Manager's Guide to Reading Blood Test Reports

Yesterday, during a customer meeting, the discussion unexpectedly moved from project documentation to health checkups. The customer was revi...