Want to lose weight and look younger? Follow these simple stepsPixabay

Christmas is just around the corner and you may want to be in your best looks. By restricting calories and consuming amino acids, you can lose weight and look younger, according to researchers.

Dr Rozalyn Anderson, co-editor of The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, claimed that reducing calorie intake can delay ageing.

The landmark study explains how consuming 25 percent fewer calories per day can slower adults' age by 0.6 years. It states that a grownup man can stick to 1,875 calories and a woman can have 1,500 calories over a 24-hour period.

Also read Fat doesn't make you fat: Study shows high-fat diet can prevent weight gain

"Remarkably, caloric restriction (CR) has been shown to be effective in delaying aging in multiple species and the results in humans look equally promising," Mail Online quoted Anderson.

"Indeed for many studies, CR is used as the gold-standard for enhanced longevity against which new drugs and anti-aging strategies are measured," she added.

The study also focuses on the effects of fasting throughout the day. According to it, ageing can be altered through diet. "Ultimately what these studies show is that what you eat influences how you age, and it's not all bad news," Dr Anderson said.

"'One of the things that people sometimes miss is the amazing fact that aging can be altered; caloric restriction research proves this," she added.

Eating soybeans, cheese and beef can help you in reducing weight.Reuters

Meanwhile, another study that was published in the Journal of Physiology explains how consumption of amino acid rich food can help those people who are desperate to stay slim.

The study claims that by consuming three specific amino acids -- leucine, isoleucine and valine -- that are known as "the building blocks for protein" can help in reducing body weight.

These amino acids can be found in high quality beef, cheese and soybeans. So, including these food items in the diet will not just help one in losing weight, but it will also play a vital role in preventing controlling blood sugar, according to Dr Dudley Lamming, a lead investigator.