Deficiency diseases

When a nutrient is missing long-term:

• Scurvy — bleeding gums, weak wounds. Cause: lack of Vit C.
• Night blindness — can't see in low light. Cause: Vit A.
• Rickets — weak, bent bones. Cause: Vit D / calcium.
• Beri-beri — weak muscles, nerve damage. Cause: Vit B₁.
• Anaemia — pale, tired. Cause: Iron.
• Goitre — swollen neck (thyroid). Cause: Iodine.
• Kwashiorkor — swollen belly, stunted growth. Cause: Protein.
• Marasmus — extreme thinness. Cause: severe energy + protein deficiency.