Puberty Diet Guide for Teens

Nutrition is a basic human need and is a prerequisite for a healthy and disease-free life. A proper, well-balanced, nutritious diet is essential from the very early stages (pre-conception) of life for proper growth, development, to remain active, and disease-free. Eating is an important and integral part of a healthy lifestyle and is something that should be taught at a young age. Requirements of essential nutrients vary with age, gender, physiological status, and physical activity. Dietary intakes lower or higher than the body’s requirements during significant periods of life such as infancy, childhood, adolescence, pregnancy, and lactation can lead to harmful consequences.

Adolescence is one of the most important periods of continuous growth and development. Adolescence (teenage) is a growth period which is spread over almost a decade. It is a transitional phase from childhood to adulthood, from ages 10 to 19, including mental, social, and emotional development. During this period, rapid growth is accompanied by hormonal changes, sexual maturation, and often emotional bouts.

An important process within adolescence is puberty, which can be described as the process of physical development from a child to an adult. Scientifically, puberty is a biological process of physical and hormonal changes that transforms a child’s body into an adult body capable of sexual reproduction. It usually starts between ages 8 to 13 for girls and 9 to 14 for boys. It involves growth spurts, voice deepening, menstruation in girls, acne, body hair, and emotional shifts driven by hormones like testosterone and estrogen.

It is important to note that puberty is a part of adolescence. Adolescence cannot occur without puberty. So, puberty refers to the changes in the body into an adult, while adolescence is the entire process of growing into an adult. Due to all these, adolescence is also known as “the period of second growth spurt.” The growth spurt in girls occurs around 8 to 13 years of age, and in boys, it occurs slightly later, between ages 9 and 14.

Other important changes during this period are:

• Body composition – The composition of the body changes during the process of maturation. These changes occur due to hormonal influences which regulate the development of sex characteristics. Girls deposit a relatively greater amount of total body fat, whereas boys deposit more muscle mass.
• Increase in height and weight – The time around puberty is the period of maximum growth. Growth in girls, in terms of both height and weight, is greatest in the year prior to menarche. Girls rarely continue growth in height into their late teens, as most females gain only 2 to 3 centimetres in height after the onset of menstruation. In contrast, in boys, growth in height and weight continues till late teens, and they achieve their full height by the age of 18 to 20 years.
• Sexual maturity – At this stage of life, along with growth in height, both adolescent girls and boys develop sexual maturity. In girls, there is breast development, growth of pubic hair, and menarche (start of the menstrual cycle). In boys, sexual changes include deepening of the voice, broadening of shoulders, development of pubic hair, and growth of the penis and testicles.
• Psycho-social changes – Adolescence is a very delicate phase where teens gradually move from the protection and safety of parents to the freedom of mature adulthood. During this shift, adolescents face many problems such as changes in body shape, the need to be accepted in peer groups, and struggles between right and wrong decisions. These further result in psychological, emotional, and social stress.

Factors affecting diet and feeding pattern during adolescence

During adolescence, there are many factors that influence eating habits, such as growing independence, busy schedules, and increased participation in social life, which gradually increase the practice of eating out, especially junk food with friends.

• Breakfast is generally skipped.
• Teenage girls particularly tend to skip meals in order to control their weight.
• Family conflicts due to differences in opinions often lead to anger being expressed through food habits.
• Excessive snacking, especially on market-bought foods while binge-watching favourite series or scrolling through social media.
• Sedentary lifestyle.
• Irregular eating patterns, unhealthy food choices, and late-night munching.

All these factors collectively affect their feeding habits and fulfillment of nutrition. It is most important to meet nutritional needs and inculcate healthy eating habits to step into healthy adulthood.

Nutritional requirements of adolescence

Food and nutrition play a very important role during this period, as rapid physical growth demands more energy and nutrients. Therefore, adopting healthy eating and maintaining a healthy lifestyle are very essential to ensure optimal growth and development.

The ICMR-NIN dietary guidelines for Indians emphasize a balanced, nutrient-dense diet for adolescents to support rapid growth, requiring higher energy and protein.

• Nutrient-dense diet – Focuses on high-quality proteins like pulses, lentils, and lean meats. Iron-rich foods are especially important for girls to cope with menstruation, such as meat, fish, poultry products, green leafy vegetables, pulses, dry fruits, and seeds like aliv seeds. Vitamin C-rich foods like amla, oranges, and other citrus fruits help in better absorption of iron.
• Calcium-rich foods – To support bone density, such as milk, ragi, leafy greens, and moringa.
• Healthy fat intake – Adolescents require a higher energy contribution from healthy fats such as nuts and avocados.
• Reduce intake of processed food – Minimize the consumption of high fat, high sugar, and salt (HFSS) foods, including bakery items, packaged foods, and carbonated beverages.
• Hydration – Consume an adequate amount of water to ensure proper hydration.

The guidelines emphasize the “My Plate for the Day” approach, ensuring a mix of cereals, legumes, leafy vegetables, and milk.

Complications related to adolescence

One of the most common problems of the present day is the comparatively early onset of puberty in girls (early menarche) and delayed puberty in boys. It has been found that puberty in girls begins at an earlier age compared to past decades. Some evidence suggests that obesity can accelerate the onset of puberty in girls and delay it in boys.

Probable reasons linked to early puberty:

• Obesity and hormonal changes – One of the major reasons for hormonal changes leading to early puberty is excess body fat, especially around the belly area, which can alter levels of hormones such as insulin, estrogen, and leptin, often leading to earlier onset of puberty, especially in girls.
• Junk food intake – High intake of junk food and animal fat can increase levels of insulin-like growth factor 1 (IGF-1), a hormone that plays a key role in promoting pubertal development.
• Malnourishment and poor eating habits – Some children are fussy eaters, and parents often lure them with tempting foods, especially junk foods high in fats and sugar. This makes the child nutrient-deficient, thereby increasing the risk of early puberty.
• Stress and lifestyle factors – Inadequate sleep, excess screen exposure, school pressures, and stress at home are major stressors that can lead to early puberty, especially in girls.

Although adolescence is a very critical and stressful phase for children, it can be carefully managed with the help of parents by taking care of their nutrition and physical and emotional well-being, along with incorporating physical activities and meditation. Taking care of their sleep patterns so that they get proper sound sleep and ensuring proper nutrition can help, as a healthy adolescence leads the pathway to healthy adulthood.