Watermelon: the latest 'functional food'?

Relaxnews
Tuesday 19 October 2010 00:00 BST
Comments
(Anelina)

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

No matter how you slice it, watermelon is a sweet, low-calorie, high-fiber treat. But now research suggests that watermelon can help reduce and prevent high blood pressure.

Researchers at Florida State University in the US discovered that watermelon is rich in the amino acid L-citrulline, a precursor of L-arginine, that reverses the effects of prehypertension by maintaining arterial function and improving proper blood flow. Published in the journal American Journal of Hypertension, the study is the first of its kind to show this benefit in humans.

"These findings suggest that this 'functional food' has a vasodilatory effect," said Arturo Figueroa, co-author of the study in a news release on October 13, "and one that may prevent hypertension from progressing to full-blown hypertension, a major risk factor for heart disease."

Why study watermelon? "Watermelon is the richest edible natural source of L-citrulline," said Figueroa, which is closely related to the amino acid L-arginine. L-arginine is required for the formation of nitric oxide, which helps the regulation of vascular tone and healthy blood pressure.

In the study, nine volunteers (four men and five women aged 51-57 years) took a daily dose of six grams of the amino acid L-citrulline/L-arginine, contained in the extract of watermelon.

Figueroa suggests that consumers can rely on synthetic pills of L-citrulline for now - he recommends an optimal dose of four to six grams a day for people with high blood pressure, especially those who are older or with chronic diseases such as type 2 diabetes.

Garlic is another natural food shown to have a modest effect on lowering blood pressure and may help relax blood vessels. US health expert Andrew Weil, MD, suggests using garlic to help reduce blood pressure, along with other tried-and-true methods, such as eliminating salt, reducing animal protein, and eating four to five servings of nuts, seeds, and dry beans per week.

To read more of Dr. Weil's health tips to treat high blood pressure: http://www.drweil.com/drw/u/ART00686/high-blood-pressure-treatment

To read more about L-citrulline: http://www.webmd.com/vitamins-supplements/ingredientmono-1245-L-CITRULLINE.aspx?activeIngredientId=1245&activeIngredientName=L-CITRULLINE

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in