Supplements should deliver sustained benefits without accumulating side effects. We consider ingredient sourcing (organic, non-GMO, medical-grade), manufacturing standards (cGMP certification, third-party testing), and potential side effects. Products earn high marks when multiple studies or authoritative health organizations support their efficacy, especially those with peer-reviewed human trials. This measures how effectively the supplement addresses key age-related concerns like heart health, hormonal balance, and bone strength. Human research has not shown that beta-sitosterol increases testosterone, and it is not a testosterone booster. Rarely, it can worsen a genetic condition called sitosterolemia, where the body absorbs too many plant sterols. Most men tolerate beta-sitosterol well, but some may experience nausea, gas, constipation, reduced libido, erectile dysfunction, or hormonal changes. Supplements work best alongside a healthy lifestyle. This ensures professional oversight and becomes part of your medical record, which is important for comprehensive care. Yes, especially if you have medical conditions or take prescription medications. The male fish saw lower testosterone levels. Studies have looked at endocrine disrupting effects of beta-sitosterol in fish. RxList does not provide medical advice, diagnosis or treatment. Sudhop T, Lutjohann D, Kodal A, et al. Inhibition of intestinal cholesterol absorption by ezetimibe in humans. Nor did Serenoa repens provide noticeable relief, generally considered to be a decrease of 3 points, in urinary symptoms (27). This is a popular herbal medicine for BPH and the review found that it was well tolerated, but was no better than placebo in improving urinary symptom scores. The research that has been undertaken, which is summarized in Sidebar 3, offers hope that alternative treatment options are available and may produce clinically effective therapies in the future, once suitably refined. Effect of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor on sterol absorption in hypercholesterolemic subjects. Beta-sitosterol has also been linked to reports of erectile dysfunction (ED), loss of interest in sex, and worsened acne. Don't confuse beta-sitosterol with sitostanol, a similar substance contained in the product called Benecol. The federal Food and Drug Administration (FDA) allows manufacturers to claim that foods containing plant sterol esters such as beta-sitosterol are for reducing the risk of coronary heart disease (CHD). In foods, beta-sitosterol is added to some margarines (Take Control, for example) that are designed for use as part of a cholesterol-lowering diet and for preventing heart disease. Not everyone needs supplements, but they can be valuable nutritional insurance. Do I really need to take supplements if I'm over 40 and eat pretty well? It's the single supplement most likely to add healthy years to your life. While other supplements target specific issues like joints or energy, Olivea offers the broadest impact on longevity and disease prevention.