15 diseases that only occur due to a deficiency in these vitamins.

Vitamin deficiency related to severe hair loss
Studies show that a deficiency in vitamin B (biotin) leads to hair loss. Other B vitamins help in the production of red blood cells, which deliver oxygen and nutrients to hair follicles and the scalp, promoting hair growth. In general, if vitamins A, B7 (biotin), and iron are not provided, they can lead to physical and mental deficiencies, such as hair loss, acne, depression, etc.

Vitamin deficiency related to headaches and dizziness
B vitamins protect the nervous system and play an important role in safeguarding the body from headaches. Both primary and secondary types of headaches often have signs of vitamin deficiency. A deficiency in vitamin B2, vitamin B6, calcium, and magnesium can be more influential in causing headaches.

Vitamin deficiency related to depression
Depression is one of the most common mental health problems. Nutritional factors and deficiencies in certain nutrients and vitamins play a significant role in the onset of depression or exacerbate its symptoms. One of the vitamins that plays a big role in the onset of depression is vitamin D. A deficiency in this vitamin leads to depression, dementia, and autism.

Vitamin deficiency related to insomnia
Some vitamins and nutrients help regulate the body's biological clock and improve sleep. A deficiency in vitamin B6 leads to insomnia because without this vitamin, the body cannot properly produce sleep hormones.

Vitamin deficiency related to night blindness
A deficiency in vitamin A causes difficulty seeing at night or in the dark. To increase vitamin A and improve vision, consuming carrots is beneficial as they are rich in beta-carotene, a precursor to vitamin A.

Vitamin deficiency related to cracks at the corners of the mouth
Cracks and splits at the corners of the mouth may be due to a deficiency in vitamins B2, B3, B12, or a lack of iron and zinc. This problem is more common among vegetarians and those whose diets are not suited to their physical condition.

Vitamin deficiency related to gum bleeding and long-lasting wounds
Gum bleeding and wounds that do not heal are mainly caused by a deficiency in vitamin C. To prevent vitamin C deficiency and scurvy, it is recommended to consume 10 mg of vitamin C daily. Tangerines, oranges, bell peppers, papayas, and kiwis are major sources of vitamin C.

Vitamin deficiency related to red pimples on the face and body
A deficiency in vitamins A, D, and fatty acids is one of the main causes of red pimples on areas like thighs, arms, and cheeks. To combat these pimples, consume leafy green vegetables, orange and yellow vegetables rich in vitamin A, and fatty fish while also getting sunlight exposure.

Vitamin deficiency related to fatigue
Constant fatigue can be a sign of certain diseases or a deficiency in one or more specific vitamins. Deficiencies in riboflavin (vitamin B2), vitamin D, and vitamin B12 contribute to fatigue. Eating fish, meat, eggs, and mushrooms can help reduce fatigue.

Vitamin deficiency related to loss of appetite
A wide range of issues can reduce appetite and prevent the sensation of hunger in individuals. One of the causes is a deficiency in biotin. Consuming almonds, eggs, legumes, and other biotin-rich foods will help resolve loss of appetite.

Vitamin deficiency related to dry skin
Dry skin can be caused by several factors, one of which is a deficiency in vitamins A and B. Vitamin B3 (niacin) is the most important vitamin for skin health, and a deficiency can lead to pellagra. Biotin deficiency also causes skin dryness and flakiness. To prevent dry skin, include leafy vegetables, nuts, grains, and fatty fish in your diet.

Vitamin deficiency related to nausea, constipation, and bloating
Nausea, constipation, and bloating are common symptoms that many people experience. Interestingly, in addition to other causes, a deficiency in vitamin B12 can also lead to these symptoms. Vitamin B12 is found in liver, kidney, turkey, tuna, and other foods, and its deficiency is often hard to detect because the body stores a large amount of it.

Vitamin deficiency related to numbness in the hands and feet
A deficiency in folic acid and vitamins B6 and B12 leads to frequent numbness and tingling in the extremities (fingers and toes). To increase these vitamins, consume vegetables such as beets, asparagus, spinach, and eggs.

Vitamin deficiency related to diarrhea
There are many causes of diarrhea, one of which is a deficiency in vitamin B9. If you experience this problem without a specific cause, consume sources of vitamin B9 such as liver and cooked legumes.

Vitamin deficiency related to pain in the fingers, calves, and soles of the feet
A deficiency in calcium, potassium, or magnesium causes cramps and muscle tightening in areas like the calves, fingers, or the soles of the feet without any apparent reason. To reduce these pains, consume fruits like cherries, apples, grapes, bananas, and also leafy green vegetables.