The period of the biggest appetite is generally during the teenage years, specifically during the rapid growth spurts of puberty.
The second decade, 10-20
In the teenage years, a growth in appetite and stature driven by hormones, signals the arrival of puberty. How a teenager approaches food during this critical period will shape their lifestyle choices in later years.
On an average day in 2014–16, individuals age 65 and older spent about 20 percent more time eating and drinking as a primary activity than younger age groups—74.6 minutes per day versus an average of 62.1 minutes for those age 18–64.
The answer, according to Dr. Shazhan Amed, a pediatric endocrinologist at BC Children's Hospital in Vancouver, is that it's perfectly normal for some kids this age to develop astounding appetites. Girls often begin their pubertic growth spurt around age 10, and boys slightly later, sometime between 12 and 14.
During childhood and adolescence, physiological, psychological, and behavioral processes strongly promote weight gain and increased appetite while also inhibiting weight loss and decreased appetite.
There's no single "hardest" age, but many parents and experts point to ages 14-16 as particularly challenging due to intense hormonal shifts, social pressures, identity formation, increased desire for independence, and conflicts with parents as teens push boundaries, with some studies suggesting 14 (especially for girls) and 15 (for boys) are peak difficulty points.
As teenagers grow and develop, it's normal for them to start eating a lot more. Your child's body is going through a major growth spurt and extra food provides extra energy and nutrients to support this.
Girls begin puberty at different ages. It can start as early as age 9. By age 15, most girls have fully developed.
The 2-2-2 food rule is a simple guideline for leftover safety: get cooked food into the fridge within 2 hours, eat it within 2 days, or freeze it for up to 2 months to prevent bacteria growth, keeping it out of the temperature "danger zone" (40-140°F or 5-60°C).
Further, women more frequently report experiencing craving in everyday life [3,5,80].
Gen Z: The Future Of Health
Alkhoudr says. They also have tools at their fingertips to support better health. Digital devices make it easier than ever to access nutrition information, track caffeine use, connect with therapists and support groups, stream exercise videos and find other supports for better health.
Most people begin to notice a shift in the appearance of their face around their 40's and 50's, with some also noticing a change in their 30's.
Understanding the 3-3-3 Rule
Specifically, the rule suggests: Three balanced meals per day. Three hours between each meal. Three hours of movement per week.
Digestive issues: As you get older, your digestion (gastric emptying) can slow down, making you feel fuller longer. You are also more likely to be constipated, which can make you not want to eat. Hormonal changes: Age-related changes to hormone levels and responsiveness can disrupt your body's hunger signals.
When we don't listen to our hunger and fullness cues, it can cause us to sometimes over- or under-eat. A very common misconception is that the sensation of hunger is associated with losing weight.
A significant amount of the body's growth begins to take place around ages 10-12 and peaks around 13-14. Because a teen's body is growing and developing so much at this time, they have higher metabolic needs. This means they need more calories and more vitamins and minerals, especially certain ones like calcium.
Once you have your first meal, depending on its content and balance, it's recommended to have each subsequent meal every three to four hours to prevent dips in blood sugar levels (which can lead to feeling hangry). Meals should include a protein-rich food, high-fiber starches, vegetables, fruits, and fat.
80% healthy, whole foods, and 20% for fun, less-nutritious treats. The key is consistency over time, not perfection at every meal. So, if one day you have a pizza, no big deal—just aim to get back on track with your next meal.
For most teens, mood swings begin around puberty, typically between ages 11 and 13, and gradually settle as they move into their late teens and early 20s. By this time, hormonal fluctuations stabilize, and the brain's emotional regulation systems — particularly the prefrontal cortex — continue to mature.
In general, breast development begins between the ages of 8 and 13. A girl's breasts are typically fully developed by age 17 or 18. However, in some cases, breasts can continue to grow into a woman's early 20s.
During Puberty Girls Grow Fast and Early
Unlike boys, their fastest rate of growth occurs early in puberty. They also gain more fat than boys in preparation for their menstrual cycle. They go from gaining about 5 pounds a year before puberty, to 12-23 pounds during puberty as shown below.
Especially during the growth spurt, teens tend to have greater nutritional needs to support growth in height. Parents may notice that their teens have a greater appetite during this time, which makes consuming and maintaining a balanced diet throughout puberty extremely important.
A key feature of ADHD is impulsivity. People with ADHD tend to act quickly and this can easily spill over into eating behaviors. They might grab food impulsively, eat faster than others, or even forget to eat until they're absolutely starving, leading to overeating.
Leikin says puberty plays a major factor in eating patterns for teens. “Their body has an increased demand for calories needed for growth in weight, height, muscle, bone and organs,” she says. “It is essential for their body to consume enough calories for optimal growth and development.”