How can you lower hs-CRP naturally?

What hs-CRP measures and what counts as high

C-reactive protein (CRP) rises with inflammation. Testing.com explains that the standard CRP test is built to catch significant inflammation from infection or injury, while the high-sensitivity version, hs-CRP, shows whether low-grade inflammation is building cardiovascular risk.

The American Heart Association and the CDC define three cardiovascular risk categories, as summarised by testing.com:

• Below 1.0 mg/L: low risk.
• 1.0 to 3.0 mg/L: moderate risk.
• Above 3.0 mg/L: high risk.
• Above 10 mg/L: likely reflects acute illness or injury, not long-term cardiac risk.

Why one high result is often temporary

CRP responds fast. Testing.com notes that even a mild cold or another recent infection, illness or injury can push hs-CRP well above 10 mg/L. That is why a high result, above 3.0 mg/L, should be confirmed with a repeat test, ideally two weeks later, when you are free of acute illness.

Exercise matters too. A systematic review in the Journal of the American College of Cardiology found that exercise produces a short-term inflammatory response, even though regular activity lowers CRP over time. A hard session shortly before your blood draw can therefore make a result look worse than your usual level.

So before you change anything, make sure the number reflects your normal state. A few simple steps make a repeat test fairer:

• Wait until you are free of a cold or other infection, and re-test a high result about two weeks later (testing.com).
• Avoid an unusually hard workout shortly before the blood draw (JACC review).
• Tell your doctor if you take hormone replacement therapy, which is linked to higher hs-CRP (testing.com).
• Keep the conditions the same each time, so a change reflects you rather than the circumstances of the test.

Weight and physical activity

Weight loss has the clearest link. A systematic review of 33 weight loss studies, covering lifestyle, diet, exercise and surgical programmes, found that CRP fell in a roughly straight line with weight. Across all the studies, each 2.2 pounds lost went with an average fall of 0.13 mg/L. The link was weaker when the lifestyle studies were analysed on their own. The authors concluded that weight loss may be an effective non-drug way to lower CRP. Because the link was roughly linear, larger weight loss went with larger falls in CRP.

Regular activity helps too. The same JACC review looked at studies comparing people by activity level and at exercise training trials. Both showed a long-term anti-inflammatory effect, which the authors suggest may contribute to the benefits of habitual physical activity. The short-term rise after a single workout and the long-term fall from training are both real, which is why timing matters when you test.

Diet pattern

The strongest dietary evidence is for an overall eating pattern, not a single food. A meta-analysis of 17 randomised trials with about 2,300 adults compared Mediterranean-style diets with control diets over at least 12 weeks. hs-CRP fell by about 1 mg/L more on the Mediterranean diet, and other markers of inflammation and blood vessel function improved as well.

Results varied a lot between trials, so the average effect will not apply to everyone. Every trial lasted at least 12 weeks, so expect any change to build over months rather than days. Testing.com lists diet among the changes that can bring CRP down, alongside exercise and quitting smoking.

Smoking and alcohol

Smoking is linked to higher inflammation, and the effect reverses slowly after quitting. A study of 15,489 people in the US National Health and Nutrition Examination Survey (NHANES III) found that CRP and other inflammatory markers rose with how much people smoked and fell with time since quitting. Smoking less improved them too. Inflammatory markers recovered more slowly than traditional heart risk factors, returning to baseline about 5 years after people stopped.

Alcohol is less clear-cut. In a national survey of about 1,800 German adults in the late 1980s, heavy drinkers had higher CRP than moderate drinkers, mainly among men. Non-drinkers also had higher CRP than moderate drinkers, but a survey of this kind cannot show that alcohol lowers inflammation, and it is not a reason to start drinking. The useful finding is that heavy drinking goes with higher CRP.

Sleep and oral health

Poor sleep is linked to higher CRP. A meta-analysis of 72 studies with more than 50,000 adults found that sleep disturbance was associated with higher CRP. Very long sleep was also linked to higher CRP. The link with shorter sleep was weaker, and short-term sleep deprivation in the lab did not raise CRP. The authors concluded that sleep disturbance and long sleep, rather than short sleep, go with higher markers of inflammation.

Gum disease is a less obvious source of inflammation. A systematic review found that people with periodontitis had hs-CRP about 1.56 mg/L higher on average than people without it, and studies often found their levels above 2.1 mg/L. Treatment studies showed CRP fell by about 0.50 mg/L after periodontal therapy, although the authors rated that evidence as modest.

When to speak to a doctor

Speak to your doctor if your hs-CRP is above 10 mg/L, if it stays high on a repeat test, or if you feel unwell. Testing.com notes that a result above 10 mg/L likely reflects an acute illness or injury, and that if a high result holds once recent illness is ruled out, your provider may recommend more testing.

Your provider reads hs-CRP alongside your full health picture, including cholesterol, blood pressure, diabetes status and family history, not on its own. If you take any medicine or supplement, do not change it because of an hs-CRP result without talking to your doctor first.