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This IKEA-cafeteria staple can actually help you put things together in the bedroom. In addition to packing four times your daily requirement of Vitamin B12 in one average-sized filet, herring is also rich in magnesium, which boosts testosterone and keeps sperm healthy and viable. On top of that, oily fish like herring are sky-high in vitamin D, which can help you get and keep it up. In a recent study published in the Journal of Sexual Medicine, Italian researchers examined 143 men with ED; 80% had suboptimal levels of the nutrient, and the men with severe ED had a 24% lower level of D than those with a mild form of the condition. The theory is that low levels of D promote dysfunctional blood vessels and a shortage of nitric oxide.
Intensive lifestyle changes that include a Mediterranean type diet, circuit-type resistance training, with 15- to 60-second rest between sessions has shown to improve erectile score in a randomized trial. Men in the intervention group had a significant decrease in glucose, insulin, low-density lipoprotein cholesterol, triglycerides, and blood pressure, and a substantial increase in HDL cholesterol.15

Antioxidants  boost nitric oxide production and prevent NO breakdown. Ascorbic acid has direct effects on the bioactivity of NO, and augments NO production in a variety of body processes. The effects are actually synergistic with Vitamin E. Both vitamins are not usually measured, and a reasonable dose of Vitamin C is 500 to 1,000 mg daily. Vitamin E supplementation should be limited to <400 IU per day because of potential adverse long-term health effects of higher doses.
L-arginine is an amino acid that is necessary for the lining of the blood vessels to produce nitric oxide. Nitric oxide allows the blood vessels to relax, thus improving blood flow throughout the body, including to the penis. Studies on L-arginine and erectile dysfunction have used between 2,000-5,000 mg a day in divided doses.ii Supplemental arginine is best taken on an empty stomach.3
In a prospective human phase 1 open-label and single-arm study reported by Haahr et al. (27), 17 men with refractory post radical prostatectomy ED were given a single intracavernosal injection of autologous adipose-derived regenerative cells (ADRCs) freshly isolated after a liposuction. The procedures were well-tolerated and over a 6-month follow-up period, 8 of 17 men showed improvement of their erectile function.
Energy-boosting goji berries have been used for thousands of years in Chinese medicine to help increase energy and enhance the release of hormones. Goji increases the body’s ability to handle stress and support healthy mood, mind and memory—all while giving you the get-up-and-go energy needed to get your workout to the next level,” says Dr. Lindsey Duncan, celebrity nutritionist (he’s worked with Tony Dorsett and Reggie Bush). “Goji is also beneficial for increasing blood flow, which helps to oxygenate all of the cells and tissues of the body, which increases your drive—that’s why they call goji the ‘Viagra of China.’”
Poor sleep patterns can be a contributing factor for erectile dysfunction, Mucher says. One review published in the journal Brain Research emphasized the intricate relationship between the level of sex hormones like testosterone, sexual function, and sleep, noting that testosterone levels increase with improved sleep, and lower levels are associated with sexual dysfunction. Hormone secretion is controlled by the body’s internal clock, and sleep patterns likely help the body determine when to release certain hormones. 
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