Eating plums, especially dried plums, significantly lowers LDL levels and total cholesterol levels, particularly in adults with existing health issues.

2024 Food Science & Nutrition The effects of plum products consumption on lipid profile in adults: A systematic review and dose–response meta‐analysis Heydarian A, Tahvilian N, Asbaghi O, Cheshmeh S, Nadery M, Aryaeian N

Systematic Review Cholesterol LDL Plum

The researchers conducted a systematic review and meta-analysis using keyword searches on databases such as PubMed, Scopus, and ISI Web of Science up to a specified date. They were on a mission to find eligible trials that would help ascertain the benefits of plum consumption on adult lipid profiles.

In their observation of the collected data, they concluded that plum, specifically dried plum consumption, had a noteworthy impact on LDL levels, mainly when the subjects were in an unhealthy state. This consumption led to a significant decrease in total cholesterol levels in the unhealthy subjects. Nevertheless, the study couldn't establish major changes in triglycerides and HDL concentrations as a result of the plum consumption.

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Walnut consumption coupled with concurrent training improves lipid profile, steroid hormone levels, and systematic inflammation in elderly men.

2021 Biology of Sport Moderate walnut consumption improved lipid profile, steroid hormones and inflammation in trained elderly men: a pilot study with a randomized controlled trial Kamoun A, Hammouda O, Turki M, Maaloul R, Chtourou M, Bouaziz M, et al.

Randomised Controlled Trial Cholesterol Cortisol CRP

The study created two matched groups of fit elderly men and placed one on a diet inclusive of walnuts (15g/day for six weeks) alongside their concurrent (resistance and endurance) training. The other group did the concurrent training without the walnut-supplemented diet. The study then took fasting blood samples from the participants 48 hours before and after the intervention for biochemical assessments.

The group consuming walnuts saw a significant improvement in their lipid profiles with increased high-density lipoprotein levels and decreased total cholesterol, low-density lipoprotein and triglyceride levels. The walnut-eating participants also saw an increase in testosterone levels after the training, which was significantly higher than the group not consuming walnuts. Additionally, the walnut-consuming group experienced lowered cortisol levels and decreased C-reactive protein compared to the group not consuming walnuts. It is plausible the results could be attributed to the presence of polyunsaturated fatty acids in walnuts.

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Strawberry interventions significantly reduced CRP levels and may improve total cholesterol and LDL-cholesterol in individuals with high baseline levels.

2020 British Journal of Nutrition Effects of strawberry intervention on cardiovascular risk factors: a meta-analysis of randomised controlled trials Gao Q, Qin LQ, Arafa A, Eshak ES, Dong JY

Meta-Analysis Cholesterol CRP LDL

We included eleven RCT in this meta-analysis (six for blood pressure, seven for lipid profile, seven for fasting blood glucose and six for C-reactive protein (CRP)). Overall, the strawberry interventions significantly reduced CRP levels by 0·63 (95 % CI −1·04, −0·22) mg/l but did not affect blood pressure, lipid profile or fasting blood glucose in the main analyses. Our analysis stratified by baseline endpoint levels showed the strawberry interventions significantly reduced TC among people with baseline levels >5 mmol/l (−0·52 (95 % CI −0·88, −0·15) mmol/l) and reduced LDL-cholesterol among people with baseline levels >3 mmol/l (−0·31 (95 % CI −0·60, −0·02) mmol/l). There was little evidence of heterogeneity in the analysis and no evidence of publication bias.

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Incorporating daily doses of walnuts into the diet of elderly individuals significantly reduces the concentrations of several inflammatory biomarkers.

2020 Journal of the American College of Cardiology Effects of 2-Year Walnut-Supplemented Diet on Inflammatory Biomarkers Cofán M, Rajaram S, Sala-Vila A, Valls-Pedret C, Serra-Mir M, Roth I, et al.

Randomised Controlled Trial Anti-Inflammatory Cholesterol Walnut

This study followed the WALHA study protocol and involved 708 elderly participants from two centers, one in Barcelona, Spain, and another in Loma Linda, California. They were randomly assigned into two groups: one group incorporated walnuts, at least 15% of energy (30 to 60g per day), into their diets, while the other group abstained from walnuts. The participants visited dietitians every two months for advice to maintain their allocated diets and physical activity level. The walnut group received 8-week allotments of raw-piece walnuts in sachets for daily consumption. The researchers conducted assessments of inflammatory biomarkers at the start and end of this 2-year study.

Differences in the changes of inflammatory markers between diets were analyzed using multivariate-adjusted analysis of covariance. Of the 634 participants who completed the study, 66% were women and 32% were on statins. The average age was 69 years. There were no changes in body weight throughout the trial. Incorporation of walnuts into the diet resulted in significantly reduced concentrations of six out of ten examined biomarkers. Changes in inflammatory molecules were not related to changes in the main food groups.

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Drinking 1litre of mineral water daily with meals can reduce risk factors for heart and metabolic diseases, particularly when replacing sugary drinks.

2016 Nutrients An Intervention with Mineral Water Decreases Cardiometabolic Risk Biomarkers. A Crossover, Randomised, Controlled Trial with Two Mineral Waters in Moderately Hypercholesterolaemic Adults Toxqui L, Vaquero M

Clinical Study Blood Sugar Cholesterol LDL

This randomized-controlled crossover trial involved 64 adults with moderate hypercholesterolemia. Participants were assigned to consume 1 liter per day of either sodium-bicarbonated mineral water (BW) or control mineral water low in minerals (CW) alongside their main meals for eight weeks. This was followed by an eight-week washout period. The study measured various cardiometabolic risk biomarkers including blood lipids, glucose, insulin, aldosterone, urine pH, urinary electrolytes, blood pressure, body weight, and overall fluid, energy, and nutrient intake from diet and beverages.

The intervention led to a decrease in total cholesterol, LDL cholesterol, and glucose levels, with a trend towards lower oxidized LDL. Apolipoprotein B increased, but there was no significant difference between the types of water consumed. The study also observed a decrease in energy and carbohydrate intake from beverages, attributed to a reduction in soft drink and fruit juice consumption. BW specifically increased urinary pH and reduced calcium/creatinine excretion, indicating a moderate alkalizing effect on the body, without impacting blood pressure. Overall, consuming 1 liter of mineral water daily appeared to reduce cardiometabolic risk biomarkers, likely due to the replacement of sugary beverages with water.

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