More Than a Number: The Four Risks That Shape Your Retirement

Many people can tell you their portfolio balance. Far fewer can tell you what else determines whether their retirement actually works.

That's understandable. The balance is the number on the statement. It's concrete, and it feels like a score. But judging retirement readiness by that one figure is a little like judging your health by your weight—useful, and nowhere near the whole story.

A framework published in the Journal of Financial Planning offers a wider view.¹ It treats retirement as four connected risks to manage rather than a single investment problem to solve: longevity, market, health, and decision.

Only one of those is about the market.

Why the Market Gets All the Attention

There's a reason investment performance dominates most retirement conversations: it's the part we can measure.

Market risk can be modeled, simulated, and stress-tested with well-established tools, and decades of research have gone into questions like how much you can safely withdraw and how the timing of returns changes outcomes.¹

That's valuable work. It also creates a bias toward the measurable. Risks that resist modeling tend to get less attention even when they carry as much weight.

Here's what each of the four looks like.

When Your Money Has to Last Longer

Longevity risk is the oldest concern in retirement planning: the possibility of outliving your assets.

It has grown harder to manage. People are living longer, pension income has largely disappeared, and responsibility for funding an uncertain number of years has shifted almost entirely to individuals.¹

The hard part isn't the long life. It's the not knowing. A plan has to hold up whether retirement lasts 15 years or 35, and those can be very different plans.

When the Market Doesn't Cooperate

Market risk covers volatility, inflation, and the order in which returns arrive.

That last part surprises people. Two retirements with identical average returns can end up in very different places depending on when the good and bad years happen.¹ A downturn early in retirement, while you're withdrawing, tends to do more damage than the same downturn later on.

This is the risk the industry has studied most, and there are well-developed approaches for managing it. It's also the risk most likely to crowd out the other three.

When Your Health Sets the Budget

Health risk has moved from the edge of retirement planning to the center of it.

For older Americans, chronic illness is the norm. More than 9 in 10 adults age 65 and older live with at least one chronic condition.² That shapes spending, income needs, and how much flexibility a plan needs built into it.

Costs are the harder part. Medical prices have climbed at more than double the rate of overall inflation since 1970.¹ And roughly 7 in 10 adults will need some form of long-term care, which can run past $100,000 a year and typically isn't covered by Medicare.¹

Health risk also behaves differently than market risk. A market downturn is usually a period you move through. A serious health event can permanently change what a household spends and who provides care.

When Decisions Get Harder to Make

This is the risk almost nobody plans for.

Retirement brings hundreds of financial decisions, made over decades: when to withdraw, how to adjust, whether to react to a headline. And the ability to make those decisions well doesn't hold steady forever.

Estimates suggest roughly 14% of adults over 65 have dementia, with another 15% experiencing mild cognitive impairment.¹ Financial decision-making tends to follow an inverse U-shape over a lifetime, peaking in midlife and gradually declining after.¹

The consequences show up in the numbers. Households affected by cognitive decline may see their net worth fall by roughly 25% in the years before a diagnosis.¹

Market declines are episodic. Cognitive change usually isn't. And decisions made under strain rarely get a second attempt.

Why These Risks Don't Stay Separate

The four risks also interact, which is what makes this more than a list.

Say you retire with a healthy portfolio. A few years in, a health event raises your monthly expenses. Covering it means larger withdrawals, which happen to land during a market downturn. And if retirement runs longer than expected, those larger withdrawals have more time to add up.

One change. Several consequences.

A portfolio balance tells you where you stand today. It doesn't tell you how the pieces of your life might move together over 30 years.

Where Do You Go From Here?

Retirement rarely arrives one risk at a time.

Investments matter. So does preparing for expenses you can't forecast, staying flexible when circumstances shift, and having a way to think through consequential decisions before they turn urgent.

Where any one person should focus depends on the full picture: health history, family longevity, income sources, timeline, and what they're actually retiring into. That's the kind of question worth working through with a financial professional, someone who can look at all four risks together instead of one at a time, and help you plan for the ones that never show up on a statement.

 

Sources:

1. The Financial Planning Association, 2026 [URL: https://www.financialplanningassociation.org/learning/publications/journal/JUN26-beyond-sequence-returns-four-risks-retirement-security-OPEN]
2. CDC, 2025 [URL: https://www.cdc.gov/pcd/issues/2025/24_0539.htm]

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