4 Benefits of Eating an Avocado a Day
1. Firmer, More Elastic Skin Although avocados are technically a fruit, they're more akin to vegetables from a nutritional standpoint. With an abundance of monounsaturated fatty acids, including oleic acid, and phytochemicals like lutein, zeaxanthin, phytosterols, vitamins E and A, niacin and folate, they're uniquely suited to supply your body with an abundance of healing nutrition. "The natural combination of carotenoids, lutein, and zeaxanthin, along with the unsaturated fatty acids, provides a superior combination that increases the carotenoid absorbability. It has been demonstrated that these carotenoids have the ability to reach and concentrate at the skin," noted a team of researchers from the University of California Los Angeles and the David Geffen School of Medicine. The team studied 39 overweight women between the ages of 27 and 73, who ate their regular diets with or without a daily avocado for eight weeks. At the end of the study, the avocado group had firmer, more elastic skin on their forehead compared to those who didn't eat the fruits. It's possible the carotenoids in the avocado helped ward off skin aging by stimulating cells known as fibroblasts to make collagen and elastin, along with offering anti-inflammatory effects and providing protection against ultraviolet light. 2. Improved Cognitive Health Avocados are an excellent source of lutein, a carotenoid that's well-known for its role in vision health, as it helps filter blue light and may also have antioxidant and anti-inflammatory properties. Lutein concentrates in the macular area of the retina, and lutein levels in the retina are associated with lutein levels in the brain. Meanwhile, lutein concentrations in the brain are associated with positive measures of cognitive function. A study of older adults tested the effects of avocado intake on cognition, with subjects consuming one avocado, one potato or one cup of chickpeas daily for six months. The avocado group increased their lutein levels by 25%. They also had increased macular pigment density (MPD), a biomarker for lutein levels in the brain, which was associated with improved working memory and better efficiency in approaching a problem.