Carbohydrates
Carbohydrates are the main energy
source for the brain. Without carbohydrates, the body could not function
properly. Sources include Yams (almost same as sweet potatoes), Brown rice (basmati,
a long grain rice), fruits, breads and grains, starchy vegetables and sugars.
Make at least half of the grains you
consume whole grains. Whole grains and fruit are full of fiber, which reduces
the risk of coronary heart disease and helps maintain normal blood glucose
levels.
Protein
Protein is the major structural
component of cells and is responsible for the building and repair of body
tissues. Protein is broken down into amino acids, which are building blocks of
protein.
9 out of the 20 amino acids (known
as essential amino acids), must be provided in the diet you take as they cannot
be synthesized in the body.
Ten to 35 percent of your daily
calories should come from lean protein sources such as low-fat meat, dairy,
beans or eggs.
Fat
Fat is an energy source that when
consumed, increases the absorption of fat-soluble vitamins including vitamins
A, D, E and K. Twenty to 35 percent of your daily intake should come from fat.
Choose healthy options such as omega-3-rich foods like fish, walnuts and
vegetable-based oils. Omega-3s help with development and growth. Limit intake
of saturated fats such as high-fat meats and full-fat dairy. Other smart
choices include nuts, seeds and avocado.
Vitamins
Vitamin C is necessary for the
synthesis of collagen, which provides structure to blood vessels, bone and
ligaments. Rich sources include citrus fruits, strawberries and peppers.
Folate, found in foods, helps to prevent birth defects. Pregnant women or women
who plan to become pregnant should speak with their physician about taking a
folic acid supplement, the synthetic form of folate, in addition to their diet.
Vitamin D helps to maintain calcium homeostasis. It can be found in food
sources or synthesized by the sun.
Minerals
Sodium helps to maintain fluid
volume outside of the cells and helps cells to function normally. Keep intake
under 2,400 milligrams per day. Potassium maintains fluid volume inside and
outside of cells and prevents the excess rise of blood pressure with increased
sodium intake. Rich sources include bananas, potatoes and tomatoes. Calcium
helps to maintain and build strong bones and teeth. Include three servings of
calcium-rich foods per day including milk, low-fat cheese and yogurt.
Water
Water helps to maintain homeostasis
in the body and transports nutrients to cells. Water also assists in removing
waste products from the body. All beverages and high-moisture foods such as
soup and watermelon contain water and count towards your daily water
requirement. Adults should consume 25 to 35 milliliters of fluids per kilogram
body weight or 2 to 3 liters per day.