![]() ![]() In a 4-week study, 59 people with hyperlipidemia took either 2 tablespoons (30 ml) of rice bran oil or soybean oil. If untreated, this inflammation can trigger atherosclerosis - the hardening and narrowing of the arteries, which can lead to heart disease ( 16).įurthermore, test-tube studies in mouse cells reveal that other active compounds called tocotrienols inhibit inflammation ( 17). In particular, it may target inflammation in your blood vessels and heart membrane. One of these compounds is oryzanol, which has been shown to suppress several enzymes that promote inflammation ( 15). Several compounds in rice bran oil have antioxidant and anti-inflammatory effects. Has antioxidant and anti-inflammatory effects Rice bran oil may reduce heart disease risk by improving cholesterol levels.Ĥ. Researchers attributed the improvements in cholesterol levels to the oil’s plant sterols, which prevent your body from absorbing cholesterol. In a 4-week study in people with hyperlipidemia, following a low-calorie diet with 2 tablespoons (30 ml) of rice bran oil per day led to significantly decreased LDL (bad) cholesterol, as well as reductions in other heart disease risk factors, such as body weight and hip circumference ( 14). Just a 1 mg/dL decrease in LDL can reduce heart disease risk by 1–2% ( 13).Įight of the studies involved people with hyperlipidemia, or high concentrations of fat in the blood, while the remaining ones monitored people without this condition. Human studies likewise note that this oil reduces LDL (bad) cholesterol ( 12).Ī review of 11 randomized, controlled trials in 344 people linked rice bran oil intake to significantly lower LDL (bad) cholesterol levels - an average drop of 6.91 mg/dL. In fact, the Japanese government recognizes this oil as a health food because of its cholesterol-lowering effects ( 3).Įarly studies in mice show that rice bran oil significantly lowers LDL (bad) cholesterol while boosting HDL (good) cholesterol ( 10, 11). ![]() Rice bran oil may promote heart health ( 9). Rice bran oil may help lower blood sugar levels and improve insulin resistance, though more human studies are necessary. Yet, no changes in insulin levels occurred, suggesting that rice bran oil may even support healthy blood sugar levels without affecting insulin ( 8).Īs such, more research is needed. The morning after 19 healthy men ate a single meal containing 3.7 grams of rice bran mixed in oil, their blood sugar levels dropped 15%, compared with those who didn’t eat this ingredient ( 7). In a 17-day study in mice with type 2 diabetes, rice bran oil significantly lowered blood sugar levels by increasing insulin levels, compared with the control group ( 6).Ī human study found similar results. In a test-tube study in mouse cells, rice bran oil reduced insulin resistance by neutralizing free radicals, which are unstable molecules that may lead to oxidative stress ( 5). Yet, if you develop insulin resistance, your body stops responding to this hormone. Insulin lowers blood sugar by transporting sugar into your cells. Rice bran oil may support healthy blood sugar levels by improving insulin resistance, a risk factor for type 2 diabetes ( 4). ![]()
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