Macronutrients are nutrients that the body needs in large amounts to provide energy and build and repair tissues. Protein is one of the three macronutrients, along with carbohydrates and fats.

Carbohydrates are the body's main source of energy. They are broken down into glucose, which is then used for energy by cells throughout the body.

Omega-3 fatty acids are essential fatty acids that the body cannot produce on its own. They are found in high amounts in fatty fish, such as salmon, tuna, and mackerel.

The recommended daily intake of fruits and vegetables for adults is 4-6 servings. One serving is equivalent to about 1 cup of raw vegetables or 1/2 cup of cooked vegetables, or 1 cup of fruit or 1/2 cup of dried fruit.

Scurvy is a disease caused by a deficiency of vitamin C. Symptoms of scurvy include fatigue, weakness, bleeding gums, and impaired wound healing.

Vitamin D is essential for the absorption of calcium from the intestines. Calcium is necessary for strong bones and teeth, and it also plays a role in muscle function and nerve transmission.

Spinach is a good source of iron, which is essential for the production of red blood cells. Red blood cells carry oxygen throughout the body.

The recommended daily intake of sodium for adults is 2,300 mg. Sodium is an essential mineral that helps regulate blood pressure and fluid balance in the body.

Goiter is a swelling of the thyroid gland, which is caused by iodine deficiency. Iodine is essential for the production of thyroid hormones, which regulate metabolism, growth, and development.

Fiber is a type of carbohydrate that cannot be digested by the body. It helps to promote bowel regularity and prevent constipation.

Yogurt is a good source of calcium, which is essential for strong bones and teeth. Calcium also plays a role in muscle function and nerve transmission.

The recommended daily intake of water for adults is 3 liters. Water is essential for many bodily functions, including regulating body temperature, transporting nutrients, and removing waste products.

Zinc deficiency can cause a variety of symptoms, including loss of appetite, impaired wound healing, skin rashes, and decreased immune function.

Vitamin A is essential for protecting eyesight. It helps to produce the pigment rhodopsin, which is necessary for vision in dim light.

Bananas are a good source of potassium, which is essential for regulating blood pressure and fluid balance in the body.