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• The 1941 National Nutrition Conference on Defence announced the first recommended dietary allowances (RDAs), which provided guidelines for total calories and specific nutrients including protein, calcium, phosphorus, iron, and vitamins.
• Wild edible plants serve as sources of carbohydrates, proteins, and fibers, and are rich in vitamins and minerals including vitamin A, vitamin C, zinc, iron, calcium, iodine, thiamine, riboflavin, niacin, and folate.
• Uddin et al. (2012) reported that mature leaves of Portulaca oleracea contain high amounts of calcium, iron, and zinc. Wenzel et al. (1990) further identified that Portulaca oleracea shoots are abundant in omega-3 fatty acid, α-tocopherol, ascorbic acid, β-carotene, and glutathione, making the plant a source of minerals, vitamins, and antioxidants for functional foods and nutraceutical applications.
• Pregnant women require adequate amounts of macronutrients (carbohydrates, fats, and proteins) and micronutrients (iron, zinc, and various vitamins) for fetal growth, brain development, and skeletal development.