Why did my ApoB go up after menopause?
On this page
Because menopause itself raises it. In SWAN, a US study that followed 1,054 women through their final period, total cholesterol, LDL and ApoB were the only heart risk factors that jumped in the year before and the year after the last period, more than age alone explained. The same food changes still lower it.
What we’d do
Don’t blame your diet for the jump. Judge your ApoB against the goal for your risk, start the food changes if you’re over it, and retest a few months later at the same lab. If your periods stopped before 45, tell your doctor, since early menopause is on the guideline’s list of things that raise risk.
A step on the staircase
Most heart risk factors drift up slowly with age, like a ramp. In SWAN, blood pressure, blood sugar, insulin and inflammation markers all fit that ramp. Total cholesterol, LDL and ApoB were different. They climbed steeply in the two years around the final period, like a step on a staircase, and the same pattern showed up in every ethnic group in the study.
SWAN started with 3,302 women, African American, Chinese, Hispanic, Japanese and white. Each had a checkup every year for 10 years. The 1,054 in this analysis reached their final period naturally, without surgery and without hormone therapy before it, so the researchers could time each woman’s numbers against her own last period.
What the guideline says
The 2026 US guideline lists the menopausal transition, along with pregnancy, among the physiological causes of high LDL. It also puts early menopause (before 45) and premature menopause (before 40) on its list of things that raise heart risk. The ApoB goals don’t change at menopause. They depend on your risk, the same as before.
- Under 60 very high risk
- Under 70 high risk
- Under 90 borderline or intermediate risk
- 120 raises risk
- 140 severe
mg/dL over g/L. Rungs from the National Lipid Association (2024), matched to the 2026 US guideline's LDL goals. Ticks from the 2026 guideline.
Timing your tests
If your last period fell between two ApoB tests, part of any rise may be the step itself. That makes it easy to think a diet stopped working. Keep going, and give it a few months.
| Situation | What to do |
|---|---|
| Periods stopped between two tests | Expect part of a rise to be timing. Retest in a few months |
| Started food changes around the same time | They may be working against the step. Judge them over two or three retests |
| ApoB 140 or more | See a doctor before planning a diet |
| Periods stopped before 45 | Tell your doctor. It’s a risk enhancer in the guideline |
The food changes still work
The 2019 feeding trial behind the food sizes on this site had more women than men, 69 of 113. Halving saturated fat lowered ApoB about 6 to 7 mg/dL in four weeks, and swapping meat for beans, nuts and soy about 3 to 4 more. What would lower my ApoB? puts each change against your number, and cholesterol.guide covers what menopause does to the rest of the panel.
4 sources
- Matthews KA and others, Are changes in cardiovascular disease risk factors in midlife women due to chronological aging or to the menopausal transition?, Journal of the American College of Cardiology, 2009pubmed.ncbi.nlm.nih.gov
- Blumenthal RS, Morris PB, Gaudino M and others, 2026 ACC/AHA guideline on the management of dyslipidemia, JACC, 2026doi.org
- The same guideline, full text, Circulation, 2026api.iscpcardio.org
- Bergeron N and others, red meat, white meat and plant protein on high and low saturated fat diets, a feeding trial in 113 adults, American Journal of Clinical Nutrition, 2019pmc.ncbi.nlm.nih.gov
