Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "

about us





L-Citrulline changes apple into pear


L-Citrulline changes apple into pear
Supplementation with the amino acid L-citrulline can reduce the amount of abdominal fat. Molecular researchers at the Universite Paris Descartes have published an article on this in Molecular Nutrition and Food Research. If the French researchers have got the right end of the stick, then L-citrulline may help people with an apple-shaped body to acquire a pear-shaped body.

Belly fat
If you tend to put on fat in the abdominal area you're doubly unlucky. Belly fat or, as physiologists prefer to call it, visceral fat, increases the chance of heart attacks and diabetes, and it's a disaster for your figure too: 'apples' are regarded as less attractive than 'pears'.

Whether you're an 'apple' or a 'pear' depends on your hormonal balance, and also your age. The older you are, the more easily you accumulate fat in your abdominal cavity. The French researchers wondered whether L-citrulline could reduce age-associated abdominal fat deposition. Researchers who had given older lab animals L-citrulline had sometimes reported this effect. [J Nutr. 2007 Dec;137(12):2680-5.]

L-Citrulline & Fat
The researchers gave young and old rats a hefty dose of L-citrulline daily for three months. At the end of the experimental period the researchers examined samples of visceral fat tissue from the animals, and compared these with tissue from rats of the same age that had not been given L-citrulline.

In the old rats L-citrulline boosted the secretion of free fatty acids [NEFA] and glycerol from the visceral fat cells. That means that the visceral fat cells release their contents more easily into the bloodstream so that the body can burn them.

L-Citrulline changes apple into pear

At the same time L-citrulline reduced the speed with which the visceral fat cells stores nutrients as fat. The amino acid reduced the flux and reduced the effect of the enzyme cytosolic phosphoenolpyruvate carboxykinase or PEPCK-C. This probably happened as a result of L-citrulline sabotaging the functioning of the fat sensor PPAR-gamma in the visceral fat cells.

L-Citrulline changes apple into pear

The inhibition of growth processes in visceral fat cells also took place in the young rats.

"This metabolic action of L-citrulline in the young rat could be a mechanism to limit lipid storage and to facilitate fat burning", the researchers write.

"In advanced age, fat depots are redistributed, leading to an increased ratio of visceral to subcutaneous fat mass. The L-citrulline-induced reduction of fat deposit in visceral adipose tissue could prevent this increase in ratio of visceral to subcutaneous fat, and hence limit the associated pathological risks (e.g. diabetes, cardiovascular diseases) related to aging."

"In obesity, the rise in adipose tissue mass also affects predominantly visceral fat, and L-citrulline effects in this pathophysiological situation remain an open question."

Mol Nutr Food Res. 2014 Sep;58(9):1765-75.

L-Citrulline in watermelon prevents sore muscles 03.04.2014
Better sports drinks or pre-workout shakes contain L-citrulline 01.04.2014
L-Citrulline helps you hold on to muscle mass during a weight-loss diet 10.10.2013

Weight Loss Supplements
Weight Loss
Amino Acids

Kaempferia parviflora, a supplement for your six-pack Aronia berries reduce belly fat Pantethine treatment reduces visceral fat and fatty liver

Kaempferia parviflora, a supplement for your six-pack
If you give people with a generous amount of body fat a capsule with Kaempferia parviflora every day, their body weight will not change much. But the effect of Kaempferia parviflora on the midsection fat reserves is of a different order...

Aronia berries reduce belly fat
You could draw this conclusion from a Japanese animal study that researchers at Hokkaido University published in the Journal of Oleo Science. According to the study, the phenols in aronia increase insulin sensitivity.

Pantethine treatment reduces visceral fat and fatty liver
Of all types of fat in the human body, visceral fat is the most risky for health. Supplementation with the vitamin B5 analogue pantethine may reduce the amount of visceral fat.