White hair is formed when melanocyte cells in hair follicles reduce or lose their ability to produce melanin - the pigment that determines hair color. This process is affected by age, genetics, oxidative stress, smoking and the deficiency of some micronutrients.
A scientific review published in PubMed Central (PMC) shows that premature graying is associated with deficiencies in iron, copper, zinc, vitamin B12 and some other micronutrients in some groups. This is why a balanced diet is considered an important factor in maintaining hair health.
Black beans are a source of plant protein, fiber, iron, folate, magnesium and antioxidant polyphenol compounds. According to the U.S. Department of Agriculture (USDA) FoodData Central, black beans contain significant levels of iron and folate, two nutrients necessary for blood production and nourishing rapidly growing tissues such as hair follicles.
In addition, the black bark of beans contains anthocyanins - an antioxidant group that is also present in blueberries, purple grapes and many other dark fruits. A study published in the National Library of Medicine (PubMed) shows that anthocyanins have antioxidant ability and protect cells from the effects of free radicals.
This type of water provides more polyphenols and natural minerals, and also helps replenish water for the body. However, you should not add too much sugar because high sugar levels can increase inflammatory reactions and affect metabolic health.
In addition to drinking water, black beans can also be used in porridge, low-sugar sweet soup or combined with brown rice, black sesame and other nuts to increase nutritional value.
However, experts emphasize that drinking only black bean water will not prevent gray hair if the cause comes from genetic factors or natural aging.
Experts recommend that if you want to maintain healthy hair, you need to combine many factors such as eating enough protein, supplementing with iron, vitamin B12, vitamin D, omega-3, getting enough sleep and limiting prolonged stress. These are more scientifically based measures than expecting a separate type of food.
