The improvements in IIEF-erectile function domain (IIEF-EF) score for moderate and severe ED patients in the niacin group were 3.31 and 5.28 and in the placebo group were 2.74 and 2.65, respectively. In the lower range of mild and mild-to-moderate ED, there was no significant improvement in erectile function. Of the 160 patients in the study, 32 were using statins; 18 in the niacin group and 14 in the placebo group. For patients not receiving statin treatment, there was a significant improvement in IIEF-Q3 scores (0.47) for the niacin group, but not for the placebo group. To summarize, niacin alone can improve the erectile function in patients suffering from moderate to severe ED and dyslipidemia.
It is now thought that ED is part of the cardiovascular disease complex related to metabolic syndrome (MS). Although endothelial dysfunction and atherosclerosis are believed to be part of the main mechanisms for ED in patients with MS, other mechanisms account for ED in MS include androgen deficiency, drugs, the veno-occlusive mechanism, etc. Because dyslipidemia is one of the key risk factors for the development of endothelial dysfunction and atherosclerosis in MS patients, there is a close relationship between ED and dyslipidemia.

The human body only contains 2 or 3 grams of zinc at any given time. Zinc is distributed throughout the body in organs, blood, and bones. It can be difficult to diagnose zinc deficiency. While a low blood zinc level does indicate a deficiency, a normal blood level does not necessarily indicate the absence of a deficiency. And examination of the hair for zinc or a zinc taste test (ZTT) may also be used for supportive evidence in the diagnosis of zinc deficiency.
Research has shown that the same eating patterns that can cause heart attacks due to restricted blood flow in the coronary arteries can also impede blood flow to and within the penis. The blood flow is needed for the penis to become erect. Diets that include very few fruits and vegetables along with lots of fatty, fried, and processed foods can contribute to decreased blood circulation throughout the body.

A double-blind, partial crossover study on the therapeutic effect of yohimbine hydrochloride on erectile dysfunction was done in 82 sexually impotent patients. All patients underwent a multifactorial evaluation, including determination of penile brachial blood pressure index, cavernosography, sacral evoked response, testosterone and prolactin determination, Derogatis sexual dysfunction inventory and daytime arousal test. After 1 month of treatment with a maximum of 42.0 mg. oral yohimbine hydrochloride daily 14 per cent of the patients experienced restoration of full and sustained erections, 20 per cent reported a partial response to the therapy and 65 per cent reported no improvement. Three patients reported a positive placebo effect. Maximum effect takes 2 to 3 weeks to manifest itself. Yohimbine was active in some patients with arterial insufficiency and a unilateral sacral reflex arc lesion, and in 1 with low serum testosterone levels. The 34 per cent response is encouraging, particularly in a Veterans Administration population presenting with a high incidence of diabetes and vascular pathological conditions not found in regular office patients. Only few and benign side effects were recorded, which makes this medication worth an attempt, often as a first line of treatment even at a dose of 8 tablets.
You've probably heard of the old saying "use it or lose it". Your sex muscles are just like any other muscles. If you're not using them regularly (masturbation doesn't count) they will lose size and strength. This commonly happens as you age. Considering most people judge a healthy sex life to be 3-5 times per week, that's not a lot of use for these important muscle groups. Therefore, it's best to exercise the muscles which support a healthy sex life so you can enjoy sex well into your 80's.

The key to all of this is the endothelium, the inner lining of blood vessels that helps blood flow smoothly. Regular exercise has been shown to improve the way the endothelium works. The endothelium lines the blood vessels in the heart and the penis, explains Dr. Hellstrom, but the blood vessels in the penis are about one-third the size of those in the heart. So if you fail to have erections due to vascular problems, that indicates that you’re at risk for heart problems as well.
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