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Home / Fitness / Weight-loss / Vitamin A induces weight loss in cold conditions: Know how

Vitamin A induces weight loss in cold conditions: Know how

The conversion of white into brown adipose tissue induces weight loss and new research says that vitamin A levels in the body can stimulate this.

By: Jahnavi Sarma   | | Updated: November 20, 2020 9:40 am
Tags: effective weight loss  Weight loss in winters  Winter weight loss  
weight loss
वजन घटाना है तो डाइट में शामिल करें ये 5 फैटी फूड, मिलेगा भरपूर पोषण

A recent study conducted by a research team from MedUni Vienna’s Division of Endocrinology and Metabolism shows that cold ambient temperatures increase vitamin A levels in humans and mice. This helps convert “bad” white adipose tissue into “good” brown adipose tissue which stimulates fat burning and heat generation leading to weight loss. This “fat transformation” is usually accompanied by enhanced energy consumption and is therefore considered a promising approach for the development of novel obesity therapeutics. The study has now been published in the journal Molecular Metabolism. Scientists from Harvard University, Boston and Rutgers University, New Jersey were also involved in the study. The study was funded by the Austrian Science Fund (FWF), the Vienna Science and Technology Fund (WWTF) and the research fund of the Austrian Diabetes Society. Also Read - Weight loss: Dance your way to fitness with ZUMBA

White fat stores calories, brown fat burns it

In humans and mammals, at least two types of fatty depots can be discerned, white and brown adipose tissue. During obesity development, excess calories are mainly stored in white fat. In contrast, brown fat burns energy and thereby generates heat. More than 90 per cent of the body fat depots in humans are white which are typically located at the abdomen, bottom, and upper thighs. Converting white into brown fat could be a new therapeutic option to combat weight gain and obesity. Also Read - 5 useful steps to jumpstart your workout routine for weight loss



Even moderate cold increases vitamin A levels in body

Researchers from Vienna were able to demonstrate now that moderate application of cold increases the levels of vitamin A and its blood transporter, retinol-binding protein, in humans and mice. Most of the vitamin A reserves are stored in the liver and cold exposure seems to stimulate the redistribution of vitamin A towards the adipose tissue. The cold-induced increase in vitamin A led to a conversion of white fat into brown fat (“browning”), with a higher rate of fat burning and weight loss. Also Read - Weight loss: Reset these hormones to lose stubborn belly fat

Elevated vitamin A levels stimulated faster metabolism

When researchers blocked the vitamin A transporter “retinol-binding protein” in mice by genetic manipulation, both the cold-mediated rise in vitamin A and the “browning” of the white fat were blunted: “As a consequence, fat oxidation and heat production were perturbed so that the mice were no longer able to protect themselves against the cold,” explains Kiefer. In contrast, the addition of vitamin A to human white fat cells led to the expression of brown fat cell characteristics, with increased metabolic activity and energy consumption.

But supplements are not recommended

The results of this study show that vitamin A plays an important role in the function of adipose tissue and affects global energy metabolism inducing weight loss. However, this is not an argument for consuming large amounts of vitamin A supplements if not prescribed, because it is critical that vitamin A is transported to the right cells at the right time. However, now that researchers have discovered a new mechanism by which vitamin A regulates lipid combustion and heat generation in cold conditions, it could help them to develop new therapeutic interventions that exploit this specific mechanism.

(With inputs from IANS)

Published : November 19, 2020 2:24 pm | Updated:November 20, 2020 9:40 am
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