ED can be caused by a handful of things, but one thing’s for sure: You need a healthy supply of the neurotransmitter nitric oxide (NO) to get and maintain an erection. NO is produced in nerve tissue and helps jolt your Johnson by relaxing the smooth muscle so blood can fill the penis. After the initial release of NO, your body releases a cascade of chemicals—including more of the neurotransmitter—to help keep you hard and happy, according to a study in the Proceedings of the National Academy of Sciences.
Mirja Holtrop was born and raised in Germany, where she studied Computer Science and Public Relations. After working as a Marketing Assistant for a couple of years she joined the Dr. Rath Health Foundation. In the early 2000s she moved to South Africa where she studied Education at the University of Cape Town. Her first book, ‘The Secret of Cells’, was published in 2004.
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.
In total, 24 RCTs, including 2080 patients with ED, were identified. Among these, 12 evaluated monopreparations (five ginseng [n = 399], three saffron [n = 397], two Tribulus terrestris [n = 202], and one each Pinus pinaster [n = 21] and Lepidium meyenii [n = 50]), seven evaluated formulations (n = 544), and five investigated dietary supplements in combination with pure compounds (n = 410). Ginseng significantly improved erectile function (International Index of Erectile Function [IIEF]-5 score: 140 ginseng, 96 placebo; standardized mean difference [SMD] 0.43; 95% confidence interval [CI] 0.15-0.70; P < 0.01; I2 = 0), P. pinaster and L. meyenii showed very preliminary positive results, and saffron and T. terrestris treatment produced mixed results. Several herbal formulations were associated with a decrease of IIEF-5 or IIEF-15, although the results were preliminary. The quality of the included studies varied, with only seven having a prevalent low risk of bias. The median methodological quality Jadad score was three out of a maximum of five. Adverse events were recorded in 19 of 24 trials, with no significant differences between placebo and verum in placebo-controlled studies.
10 ways of knowing that you are properly squeezing your pelvic floor muscles (PFM): 1) The base of your penis retracts inwards towards the pubic bone as you contract your PFM. 2) The testes rise towards the groin as you contract your PFM. 3) When you place your index and middle fingers in the midline between the scrotum and anus you feel these muscles tighten as you contract your PFM. 4) You can pucker your anus (not the gluteal muscles) as you contract your PFM. You feel the anus tighten and pull up and in, known as “anal wink.” 5) You get the same feeling as you do when you are ejaculating when you contract your PFM. 6) When you touch your erect penis, you feel the erectile cylinders surge with blood as you contract your PFM. 7) You can make your erect penis elevate (lift and point) as you contract your PFM. 8) You can stop your urinary stream completely when you contract your PFM. 9) You can push out the last few drops of urine that remain after completing urination when you contract your PFM. 10) After pursuing PFM training, you notice improvements in erectile rigidity and durability as well as better quality ejaculations, ejaculatory control and improvement in urinary control.
Eating more fruit, vegetables, fish, and less red meat and refined grains can decrease the risk of ED. Maintaining a healthy weight is also important, since men who have a waist that is 42-inches or more are 50 percent more likely to get erectile dysfunction. Obesity increases the risk of vascular disease and diabetes, which are known to contribute to ED.
When considering vitamin supplementation for erectile dysfunction, one of the first vitamins that you may come across in literature would be Vitamin D. This is a vitamin that can be easily obtained through many types of dairy products like milk, cheese, and yogurt and is also in abundance if you live in a tropical climate. Sunlight is able to give us a natural dose of vitamin D daily.  Although vitamin D is usually associated with improving bone strength and prevention osteoporosis, another valuable feat of vitamin D is the fact that it helps reduce atherosclerosis. Studies confirm that there is a similar underlying mechanism that occurs between conditions like cardiovascular disease and erectile dysfunction. As blood vessels are damaged and filled with plaques, the diameter for blood to flow through is gradually reduced. After a few years, the amount of blood may be reduced substantially. Vitamin D is able to help activate cells that remove some of these dangerous plaques and delay the onset of ED. 
The Aztecs referred to avocados as testicles because of their scrotum-like appearance. They were onto something. The green fruit is rich in potassium, vitamin B6 and vitamin E, nutrients that have been associated with increased libido. Plus, avocados’ good monounsaturated fats protect your heart and boost circulation, while their abundant minerals and carotenoids supply energy and stamina. For some creative ways to consume the fruit, check out our 10 avocado recipes for weight loss.
A study published in May 2014 in The Journal of Sexual Medicine found that some men can reverse erectile dysfunction with healthy lifestyle changes, such as exercise, weight loss, a varied diet, and good sleep. The Australian researchers also showed that even if erectile dysfunction medication is required, it's likely to be more effective if you implement these healthy lifestyle changes.