Nothing much but you won't be as healthy and miss out on some of the important nutrients that should really be needed. You could become weaker or not grow up very tall (and no that is not what happened to dwarfs and or midgets)
deficiency and weakness in body
deficiency disease
the lack of the vitamin that is in carrots.
No, a lack of vitamin C does not cause night blindness, but it can cause scurvy. A lack of vitamin A causes night blindness.
vitamin D
Scurvy. Vitamin C is in fruit, and a lack of fruity-foods will lead to Scurvy.
Lack of Vitamin D.
yes
Rickets
Beriberi is caused by a lack of vitamin B1, pellagra by a lack of vitamin B3, while pernicious anemia is due to a lack of vitamin B12. A lack of Vitamin B is simply called a Vitamin B Deficiency.
diabetess
Yes. The most common feature is the bowing of the legs.
Lack of vitamin D can cause Rickets in children. Rickets is the softening of bones. Vitamin D plays a part in bone health because it helps us absorb calcium Lack of vitamin D also puts you at risk of cardiovascular diseases. Lack of vitamin D has been linked to people with high blood pressure
Iron is a mineral, but it shouldn't make you sick. Lack of iron means usually leads to fatigue. Too much iron can cause heart and brain damage.