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When it comes to the healthiest foods to eat throughout life, human beings never stop eating. From birth to death, the average person eats between 10 and 20 tons of food products. For each stage of life, there are particularly suitable foods capable of:

Satisfying nutritional needs appropriate to the stage. For example:

  • During growth periods, the body needs foods that provide body-building nutrients such as proteins and calcium.
  • During Youth, the body needs more energy-producing foods that supply the calories for physical work.
  • Adults require more regulating nutrients, such as vitamins and minerals.

Preventing specific diseases and disorders associated with each life stage, such as:

The foods of one stage determine the diseases of the next

It is well known that the illnesses suffered during the second half of life are due, to a great extent, to the diet followed during the first half: infancy, childhood, adolescence, and youth. For example:

Coronary disease: Prevention of heart disease begins in infancy, childhood, and adolescence with a diet regimen that includes less saturated fats and cholesterol and is rich in minerals, vitamins, and fiber.

Diabetes: A Harvard University study revealed that women who eat a lot of sweets and little fiber, particularly whole grains, are at greater risk of diabetes.

Obesity begins in infancy and childhood.

Osteoporosis: This disease is prevented by adequate calcium intake during growth periods, particularly during preadolescence.

healthiest foods to eat for nursing babies

Healthiest Foods To Eat for Nursing Babies

Mother’s milk – This is the ideal baby food. It provides all necessary nutrients in the proper quantity and quality and antibodies that protect against infectious diseases.

Complementary foods while nursing

No foods other than breast milk or—less preferably—infant formula should be introduced before the infant reaches the age of four months since they increase the risk of eczema and other allergic reactions and digestive disorders. To reduce the incidence of food allergies and eczema or atopic dermatitis, wheat, eggs, and fish should not be initiated until after 12 months, and peanuts until three years of age.

Infant Formulas

The three primary drawbacks to infant formulas are:

Infections caused by improper hygiene in preparing nursing bottles.

Over-concentration of the formula results in dehydration of the infant, resulting in overdose.

Adverse reactions to milk-based formulas, the most common which are:

  • Intolerance, usually caused by the deficiency of the enzyme lactase, which is necessary to digest lactose (milk sugar).
  • Allergy to cow’s milk proteins in the formula. The formula must be substituted for one based on soy or an essential diet using hydrolyzed casein or whey. So-called hypoallergenic milk-based formulas are usually ineffective.

Soy Based Formulas

Soy-based infant formulas are an alternative to classic formulas based on cow’s milk. They are helpful in cases of milk intolerance or allergy. They are considered to meet the protein needs of the infant if they contain:

  • More than 2.45 grams per 100 kcal (calories) of proteins.
  • And more than 640 micromoles of sulfurated amino acids (methionine and cysteine) per 100 kcal (calories).

Most soy-based infant formulas meet these requirements.

Citrus Juice

As the infant is weaned, there is an increased risk of anemia due to iron deficiency. This may be avoided by giving the infant a few sips of citrus fruit juice (tangerine or orange juice, for example) along with infant cereal. Studies show that the vitamin C in citrus juice doubles the bioavailability (percentage absorbed) of iron found in grains. This eliminates anemia in infants.

Cow’s Milk, Inadequate for Nursing Babies

woman pouring milk into a glass

Although traditionally unadapted cow’s milk has been used to feed nursing babies, today it is known that this presents serious drawbacks that do occur with mother’s milk:

It frequently produces allergies and intolerance.

It provokes intestinal bleeding: A study at the University of Iowa revealed that thirty percent of infants fed cow’s milk showed occult blood in the stool. This is due to tiny intestinal hemorrhages. The same occurred with 5 percent of children fed adapted infant formulas based on cow’s milk.

Increased risk of diabetes: Several studies show that the earlier cow’s milk is introduced into an infant’s diet, the greater the risk of diabetes later. On the other hand, the longer the infant is breastfed, the lower the risk.

Healthiest Foods To Eat for Children

children playing soccer in a grass area

Plant-based foods – An diet is entirely satisfactory for children according to the department of nutrition of King’s College in London. A strict vegetarian diet is adequate if iron and vitamin B12 deficiencies are avoided. Researchers at the Department of Pediatrics of the University of Milan concluded that in developed countries, 12-month-old children consume excess animal protein, which is detrimental to their health.

Properly combined vegetable proteins are adequate for children’s diets. Children must take in enough calories from carbohydrates to ensure proper assimilation of these proteins. Thus, proteins are not required for energy and can be used for body development.

In a study performed at Loma Linda University with 2,272 Seventh-day Adventist children, who followed an overall ovolactovegetarian diet, it was found that:

  • They grew normally for their age.
  • They showed the healthy characteristic of a lower percentage of body fat than children in public schools where the diet was omnivorous.

Fruits and vegetables – Public health experts regularly recommend to parents in general that they increase the number of fruits and vegetables in the regular diets of their children. Natural fruit is preferable to its juice, whose excess consumption can lead to undernourishment and diarrhea.

Nuts – Nuts can be introduced after one year, except peanuts, which should not be introduced until age two or three because of the risk of allergy. Pine nuts are an excellent first nut. They are very nutritious and are generally the best tolerated of any oil-bearing nut.

Fiber – Children also need fiber, and the refined diet typical of developed countries tends to be deficient in this essential non-nutritive component. Because of this, experts in childhood nutrition stress the necessity of including fiber in children’s diets in fruits, vegetables, whole grains, and legumes. After three years of age, the recommendation is that each day the child consumes an amount of fiber calculated by adding five grams to the number of grams equivalent to the child’s age. Ovolactovegetarian children (those following a plant-based diet including eggs and dairy products but no meat) develop or better than omnivorous children and are at lower risk of obesity.

Healthiest Foods To Eat for Adolescents

Oil-bearing nuts and seeds – All of these are highly recommended for adolescents because they provide essential amino acids and fatty acids for growth, B group vitamins, vitamin E, and minerals:

group of people taking selfie
  • Pistachios are a good source of iron;
  • Cashews and squash seeds, of zinc;
  • Almonds, of calcium;
  • Sunflower seeds, of magnesium and iron.

Dates and dried fruits – Adolescents crave sweets, dates, raisins, and other dried fruits are the best option and help reduce or eliminate chocolate, pastry, and candy consumption.

Sandwiches – These are a preferred adolescent food. They are best when made with whole-grain bread. Avoid sandwiches made with sausage or other prepared meats (they promote cancer) and hamburgers (they foster heart disease).

Nutritional Needs of Adolescents

Adolescents need to eat more than adults of equal body weight. During adolescence, the need for specific nutrients increases. Thus, they must be given special consideration.

various foods that are rich in calcium

Proteins – Boys need from 45 to 66 grams daily, while girls require 46 to 55 grams. Legumes combined with grains and their derivatives (bread, pasta, etc.), oil-bearing nuts, and potatoes can adequately meet the protein requirements of adolescents. The protein supply is more than assured if dairy products and eggs are added.

Calcium – This mineral is necessary for bone development. RDA (Recommended Dietary Allowance) for adolescents from 11 to 18 years of age is 1200 mg, almost 50 percent more than the RDA for adults (800 mg). In addition to milk and dairy products, oil-bearing nuts, sesame, oranges, cabbage, and broccoli are good sources of calcium.

Iron – RDA for girls is 15 mg, 50 percent more than adults (10 mg). RDA for boys is 12 mg. Young women in this age group are at greater risk of iron deficiency anemia because of puberty and the onset of menses, among other reasons. A diet rich in natural foods provides sufficient iron for adolescents. The following must be considered:

  • Tea, coffee, and bran reduce iron absorption.
  • Vitamin C, present in fresh fruits and vegetables, facilitates iron absorption.

Zinc – This trace element is necessary for adequately developing the reproductive organs. Oysters are very rich in zinc; however, they are not required. Wheat germ, sesame seeds, squash seeds, and oil-bearing nuts are good sources of zinc for adolescents.

Fiber – Adolescents tend to consume less fiber than is necessary (20 to 25 grams daily). Fiber is found only in plant-based foods: whole grains, fruits, vegetables, and legumes.

Healthiest Foods To Eat for Youth

four kids working on a project

Athletes – Their diet should be based on the food pyramid, with particular attention to these nutrients and foods:

Complex carbohydrates – Grains and their derivatives (flakes, porridge, bread, pasta, etc.), starchy tubers such as potatoes, and legumes should form the basis of a diet for athletes. These sources of carbohydrates increase performance and stamina more effectively than animal-based foods and proteins.

Wheat germ – This contains a substance called octacosanol, which facilitates the combustion of fats and naturally increases stamina. Athletes should take 2 to 4 spoonfuls of wheat germ each morning.

Kiwis and other vitamin C-rich fruits – It has been proven that athletes who eat abundant kiwis improve stamina. It is reasonable to expect similar results with guava, currants, oranges, and other vitamin C-rich fruits.

Proteins – Contrary to what was once believed, athletes do not need to increase protein consumption but rather carbohydrates. It is sufficient if protein consumption is appropriate to:

  • Body weight (0.75 grams per kilo of weight), or
  • Calorie intake – the amount that provides ten percent of total calories consumed, or up to fifteen percent for younger athletes.

Students – In addition to a good breakfast, young people involved in intense mental activity should increase their consumption of these foods:

Oats – This grain supplies the essential nutrients for the healthy function of the neurons: glucose (released slowly as its starch digests), essential fatty acids such as linoleic acid, phosphorus, lecithin, and vitamin B1.

Pine nuts – Because of their richness in essential fatty acids, proteins, vitamins, and minerals, which are of excellent nutritional quality for the nervous system.

Almonds, walnuts, wheat germ, and figs.

A good Breakfast for the Youth

A good breakfast is essential to optimal physical and intellectual performance. For example:

  • Muesli, cereal flakes, or oatmeal.
  • Soymilk or yogurt.
  • Fresh fruit.
  • Oil-bearing nuts: walnuts, almonds, pine nuts, hazelnuts, pistachios, etcetera.
  • Wheat germ, to assure good supplies of vitamins and trace elements.

Healthiest Foods To Eat for Future Parents


father reading with his son

The diet and lifestyle of the future father have a much more significant influence than was once thought on the future child’s health. This is particularly important in the three months before conception since sperm takes that long to develop. Following these simple counsels improves the quality of the semen and sperm, reducing the risk of congenital disabilities in the newborn.

Before procreating, men should increase their consumption of:

Carrots, spinach, broccoli, mangos, and apricots since they are excellent sources of beta-carotene (provitamin A), which, in sync with vitamins C and E, safeguards the sperm and inhibits damage to the genetic code.

Citrus fruits, guava, currants, and kiwis, thanks to their abundance in vitamin C. Two kiwis of four oranges a day provide the RDA of vitamin C.

Wheat germ, almonds, other nuts, and avocado are excellent vitamin E sources.

Sunflower seeds, squash, and sesame since they supply zinc, which is necessary for sperm development.

Legumes and vegetables, which provide folates, are necessary for sperm formation.

Avoid the following foods for three months before procreation:

Alcoholic beverages and tobacco damage the sperm and may result in congenital disabilities.

Meat – Residues of hormones given to the animals and remaining in meat can negatively influence the quality of the semen.

Chemical products such as pesticides, insecticides, and organic solvents: Avoid contact with these substances. Whenever possible, eat organically grown foods.


woman playing with young daughter on her lap

The prospective mother’s diet before conception is as essential, if not more so than it is for the duration of pregnancy, to give birth to a healthy baby and reduce the risk of congenital birth defects.

Dietary recommendations before getting pregnant

Ensure a sufficient supply of antioxidants (provitamin A, vitamins C and E) by eating abundant fruits, vegetables, and nuts.

Avoid folate deficiency – It is known that this deficiency causes a variety of malformations.

Avoid eating liver, foie-gras, and pate – These tend to contain high levels of vitamin A, which can cause fetal malformations.

Avoid meat, mainly if it is not well cooked, which can transmit toxoplasmosis. This disease causes fetal malformations.

Avoid obesity – Studies conducted in California proved that obese women are twice as likely to give birth to deformed infants.

Avoid weight-loss diets – Food restriction involves a smaller amount of essential nutrients to form ova correctly.


  • George D. Pamplona-Roger, M.D. “Encyclopedia of Foods and Their Healing Power.” George D. Pamplona-Roger, M.D. Encyclopedia of Foods and Their Healing Power. Trans. Annette Melgosa. Vol. 2. Chai Wan: Editorial Safeliz, 2005. 378, 379, 380, 381, 382, 383. Print.

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