Nutrient deficiencies occur when the body lacks essential vitamins and minerals, causing health issues like fatigue, weak immunity, and skin problems. Vitamin A deficiency leads to night blindness and dry skin, while B1 (thiamine) deficiency causes beriberi with neuropathy or heart issues. Niacin deficiency triggers pellagra, marked by dermatitis, diarrhea, and dementia. Vitamin B12 deficiency […]