The B12 Conversation I Should Have Had at 60 — Not 64

At sixty-four, my wife looked up from the crossword one evening and said, gently, "You've asked me about the plumber twice this week. Same question."

I laughed. She didn't. She's not the kind to keep count for nothing.

I'd been putting things down and forgetting where. Reading glasses on top of the refrigerator, twice. Car keys on the mantel instead of the hook by the door. Nothing that scared me — but enough that I'd started to develop a private theory about "just getting older." A neighbor's wife had died of Alzheimer's the year before, and I was carrying that around quietly without telling anyone, my wife included.

The theory was wrong. It cost me a thirty-dollar blood test to find out how wrong. And it cost me two years of unnecessary worry before I asked for it.

The Signs I Was Ignoring, Plainly

Let me list them the way I'd list them for a friend now, if he told me what he was dealing with:

• Reading glasses in strange places I didn't remember putting them
• Car keys not where they should be, two or three times a week
• Repeat questions to my wife — she noticed before I did
• An afternoon fog around three or four p.m. that coffee didn't seem to cut anymore
• A vague, hard-to-describe tiredness that a good night's sleep didn't fix

None of these are dramatic. That's the whole problem — every single one of them can be blamed on age, and I blamed all of them on age for close to two years.

The Conversation That Finally Happened

I went to my primary care doctor about a mild blood pressure question. As an afterthought — mostly to satisfy my wife, who had asked me to mention it — I described the forgetfulness.

He didn't rush to reassure me. He also didn't jump to anything scary. He looked at me a minute and said: "Before we assume anything about your brain, let's rule out the boring stuff. Add a B12 to your labs."

Two weeks later, the results:

• B12: 187 pg/mL (normal range starts at 200)
• Everything else normal

He circled the 187 with the same red pen my other doctor would use three years later on my cholesterol number. "This is almost certainly a big piece of what you're feeling," he said. "Common finding after sixty. It's one of the second-easiest things to miss on a physical, and second-easiest things to fix."

Why This Happens After 60 (and Nobody Told Me)

I want to explain the mechanism, because I didn't understand it either until the appointment, and understanding it made me stop being scared:

As we age, the stomach gradually produces less of a protein called intrinsic factor, and less stomach acid. Both are required to properly absorb B12 from food. This isn't a disease — it's normal aging — but it means the B12 you're eating in your sixties may not be reaching your bloodstream at the same rate it did in your forties. The NIH's Office of Dietary Supplements notes that up to 10–30% of older adults have some form of B12 malabsorption, most of them without knowing it.

Two other things compound the problem, and this is where you need to look at your medicine cabinet:

• Metformin. If you take it for diabetes or prediabetes, long-term use significantly lowers B12 levels. Doctors know this; some routinely check. Many don't.
• Long-term acid reducers. If you've been on omeprazole, pantoprazole, or another proton pump inhibitor for years — for heartburn or reflux — these also reduce B12 absorption, because you need stomach acid to release B12 from food.

Bring your medication list to whichever doctor orders the test. It matters.

What I Actually Did

Two things, in parallel.

1. Sublingual methylcobalamin, 1000 mcg daily

The tablets you dissolve under your tongue. They cost about $12 for a bottle that lasts two months. The reason for sublingual rather than a regular swallowed pill: it bypasses the stomach entirely and absorbs directly into the bloodstream, which sidesteps the exact problem — poor gastric absorption — that caused the deficiency in the first place. Studies comparing sublingual B12 to injection have found comparable efficacy for most people, and it's a lot cheaper and less annoying than weekly shots at the clinic.

My doctor was clear: "If your levels don't come up in two months, we go to injections. But start with these."

2. Food changes that stuck

I didn't want to be dependent on a pill for the rest of my life if I could help it. So I built B12 into meals I was already eating:

• Two eggs at breakfast instead of one. One large egg has about 0.6 mcg of B12; not a lot, but consistent.
• Canned sardines twice a week. A tin has about 8 mcg — more than three days' recommended intake in one lunch. This is the same lunch that later became part of our diet overhaul at sixty-seven. It started here.
• Nutritional yeast — one tablespoon in scrambled eggs. A tablespoon of the fortified kind has around 8–10 mcg — many times the daily requirement. It tastes a little like cheese; my wife adds it to popcorn now too.
• Beef liver pâté once a month. Old-fashioned, and I know most people won't touch it. But three ounces of liver has about 70 mcg of B12 — the single most concentrated food source there is. My wife makes a chicken-liver version with brandy and butter; we spread it on toast for a Sunday lunch, and it's genuinely good.

Two Months Later

Repeat blood test:

• B12: 380 pg/mL — nearly doubled

The fog lifted first, at about the three-week mark. It happened gradually enough that I only realized it after the fact — one Wednesday afternoon I looked at the clock at 4 p.m. and noticed I hadn't been reaching for coffee. The repeat questions to my wife stopped somewhere in the second month. I do still occasionally put my reading glasses on top of the fridge; that's me, not the deficiency.

I keep taking the sublingual daily — one tablet, first thing in the morning, alongside the blood pressure pill. My most recent number was 512, comfortably in the range where the doctor said the symptoms tend not to come back.

An Honest Warning About Timing

Not everything reverses if you catch this late. Prolonged B12 deficiency, especially over years, can cause peripheral neuropathy — tingling or numbness in the feet and hands — and cognitive changes that don't fully reverse even with treatment. My doctor told me this frankly. I was lucky; I caught it at the fog stage, before it moved further.

If you have any of the signs I described and haven't had your B12 checked lately — I'd ask for it at your next appointment, not next year. It's a $30 add-on to a blood draw you were probably going to have anyway. That's the whole reason for this article.

The Signs at a Glance

Questions People Have Asked Me

How do I ask my doctor for the test? Say exactly this: "I'd like to add a B12 level and a folate to my next blood draw." Both are cheap, both are useful, and folate goes hand-in-hand with B12 in the metabolic pathway. If your doctor asks why, tell them what you've been noticing.

Is high-dose B12 supplementation safe? For most people, yes — B12 is water-soluble and the body excretes what it doesn't use. The one important exception is if you have a specific condition called Leber's disease, in which case B12 can be harmful; your doctor will know. Otherwise, you can't really "overdose" on B12 the way you can on a fat-soluble vitamin.

Do I need injections? Most people don't. Injections are typically reserved for pernicious anemia (an autoimmune condition that fully blocks B12 absorption) or for people whose levels don't come up on sublingual within a couple of months. Ask about sublingual first.

Can I just eat more meat? If you have a normal stomach and no absorption issues, yes — a diet with meat, eggs, dairy, and fish will keep most people at a healthy B12 level. But if you're already deficient at sixty-plus, food alone often can't correct it fast enough, because the absorption problem is what caused the deficiency in the first place. Supplement first, then use food to maintain.

The Bigger Point

The best conversation about your health you'll have in your sixties is not with a Google search — it's with someone who watches you at close range and doesn't say anything for a long time before they do.

My wife counted. She sat on it, quietly, for probably a month before she brought it up at the crossword. If you have someone who's watching that way — a spouse, a grown daughter, an old friend who's known you thirty years — take them seriously when they finally say something quiet. That's the person who catches it.

And if you don't have that person? Then make yourself that person for someone else. My wife has caught two things about me now that I would have missed on my own. It's the second-best deal in this marriage.