Preliminary findings from an ongoing study presented in April at the Experimental Biology 2016 meeting in San Diego, CA, indicates that the daily consumption of walnuts has a positive effect on cholesterol levels, without increasing body weight.
The researchers studied data on 514 older adults, with an average age of 69, participating in the Walnuts and Healthy Aging (WAHA) study.
Around half the participants were asked to add a handful of walnuts to their daily diet, representing 15 percent of their daily calorie intake, while the other half were asked to consume their usual daily diet without nuts.
After 1 year, the team found that participants on the walnut diet had significantly lower levels of LDL cholesterol than those consuming their usual diet. There were no significant differences between the groups regarding changes in body weight and levels of “good” HDL cholesterol.
Blood Sugar Management
Research has also demonstrated that walnut oil can help to regulate blood sugar levels making it suitable for people with diabetes or pre-diabetes. According to studies, walnut oil can help reduce blood sugar levels while also increasing the body’s production of insulin.
In conclusion, we showed that the addition of 15 ml walnut oil to the previous diet of diabetics, for 90 days, significantly decreased the total cholesterol, LDL cholesterol, triglyceride, and total cholesterol to HDL ratio, which are all important in the management of diabetes. It can be hypothesized that these effects may have an impact on the reduction of CAD risk of and other disease-related complications in diabetic patients. This assumption needs future studies to be confirmed. Finally, it can be concluded that walnut oil may serve as a helpful natural remedy in hyperlipidemic patients with type 2 diabetes.
According to research, walnut oil is also excellent for your heart. Walnut oil contains no cholesterol and is full of healthy polyunsaturated fats and monounsaturated fats. Studies have found that its nutritional makeup can help reduce cholesterol levels and blood pressure while improving the circulation of blood around the body.
Because of these effects, walnut oil could help reduce the risk of heart attack, stroke and atherosclerosis.
Frequent consumption of walnuts and/or walnut oil (which typically is how walnut products are consumed) may improve cardiovascular risk via mechanisms that extend beyond their established cholesterol-lowering action.
The cardio-protective benefits of walnut oil are primarily due to the high concentration of alpha-linolenic acid (ALA), which is an omega-3 fatty acid that ultimately is converted to eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), and omega-3 fatty acids that are easily utilized by the body. A study published in the American Journal of Clinical Nutrition reported that one tablespoon of walnut oil provides 1.4 grams of ALA. Men require 1.6 grams and women 1.1 grams of ALA per day. Walnuts differ from other nuts because they primarily consist of omega-3 fatty acids whereas monounsaturated fats are found in higher levels in most other types of nuts.