The signs: bloodshot eyes, slow reaction time, anxiety, lack of motivation, nervous, weight gain, and you should sit and have a talk with them if they don't wanna talk seek help for them if it's going to far ♀️
Vitamin D is a commonly underconsumed nutrient (also Vitamin A, Vitamin E, folate, Vitamin C, calcium etc). A longterm consequence of poor diet include an increased risk of cardiovascular disease, osteoporosis and cancer.