Cheerful senior couple having fun while eating watermelon in the backyard. (Photo/Gettyimages)
A recent scientific study has revealed that watermelon may reverse erectile dysfunction, offering new hope to millions of men struggling with sexual performance.
Haitham Al-Madhagi of Thamar University in Yemen explained that watermelon works similarly to Viagra by increasing nitric oxide levels.
This compound relaxes blood vessels, facilitating improved blood flow to the penis. According to the study, the fruit’s health effects also extend to sperm quality and testicular function.
“Watermelon has played an important dietary and medicinal role throughout the history of mankind,” the study noted. “Its antioxidant properties improve sperm quality and male sexual dysfunction.”
The findings are significant, given that more than half of middle-aged men reportedly experience erectile dysfunction (ED) at some point, although often temporarily.
Vitamin D Deficiency Also Impacts Sexual Health, Study Shows
The watermelon health discovery comes as separate research from Spain highlights another factor in erectile dysfunction: vitamin D deficiency. Published in The British Journal of Pharmacology, the study found that men with low vitamin D levels had weaker erectile responses and lower levels of a protective protein called SLPI.
The researchers, from Complutense University of Madrid, examined tissue from men deficient in vitamin D and conducted electrical stimulation tests on corpora cavernosa—the penile tissue responsible for erections. They observed that deficiency in vitamin D led to reduced nerve responsiveness and diminished Viagra effectiveness in animal models.
“Our results suggest vitamin D deficiency may contribute to the lack of response to this first-line treatment of erectile dysfunction,” said Dr. Miguel Olivencia, co-author of the study.
Lifestyle and Diet Play a Critical Role in Treating Erectile Dysfunction
Erectile dysfunction is a common condition affecting around 50% of men over 40. It can result from high blood pressure, stress, alcohol use, diabetes, or nerve damage. However, scientists emphasize that lifestyle changes—including diet—can help.
Both studies underscore how natural remedies and nutrient balance may offer alternative or complementary solutions to pharmaceuticals. Incorporating foods like watermelon, salmon, mackerel, and eggs—rich in antioxidants and vitamin D—can improve sexual health outcomes.
UK guidelines suggest vitamin D supplements during autumn and winter, especially for individuals with darker skin or limited sun exposure. However, excessive intake poses health risks, including potential kidney and heart damage.
