Some studies show that watermelon may have effects on erectile dysfunction that are similar to the ED drug Viagra and may also increase sexual desire. Watermelon is rich in beneficial ingredients known as phytonutrients. Phytonutrients are also antioxidants. One of their benefits is that they relax the blood vessels that supply an erection. Although watermelon is 92 percent water, the other 8 percent may work wonders for your heart and your sexual enjoyment.
Contrary to popular belief, the penis does not have a mind of its own. To make it a fine and upstanding specimen, your neurons must be co-ordinated with military precision. You need thiamine, aka vitamin B1, for a healthy nervous system, so eat pork to help fire your swimmers in the right direction. Can’t or don’t eat pig? Get your B from beans and wholemeal bread.
Enlargement of the prostate gland, another condition that occurs with increasing frequency in men as they age, can also cause ED. In a 2012 Swiss study, 82 men with moderate to severe symptoms of prostate enlargement, who were also experiencing problems such as ED or loss of libido, took 320 mg of saw palmetto extract daily for 8 weeks. At the end of the study, the men’s ‘International Prostate Symptom Score’ (IPSS), a method of measuring prostate health based on a questionnaire, was reduced by an average of 51 percent. In addition, their ED, libido, and other sexual functions had also improved by an average of over 40 percent. Unlike the drug approaches used in conventional medicine, which can even cause ED as a side effect, saw palmetto is very effective in treating prostate problems and is free from side effects.
In a study done to determine if vitamin D supplementation would actually help patients with ED, 143 patients with ED were tested to determine vitamin D levels. It was found that of these cases, 46 percent of patients suffered from substantial vitamin D deficiency and only 20 percent were found to have adequate levels of vitamin D. In these cases, it was also determined that inadequate arterial blood flow was the root cause of ED more commonly in patients with low vitamin D levels.  Vitamin D supplementation can improve both these parameters.
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.