What is the most relevant determining factor in the onset of menses?

What is the most relevant determining factor in the onset of menses?

Menarche is affected by genetic factors, race, environmental conditions, nutrition, physical activity, geographic location, urban or rural residence, health status, psychological factors, blindness, body mass index (BMI), family size, socioeconomic status, parental educational level, occupation of parents, loss of …

What indicates the onset of menarche?

Menarche symbolizes the onset of sexual maturity and is characterized by the onset of the first menstrual bleeding. The average age at menarche is 13.8 years; however, it ranges from 9 to 18 years and varies by race and ethnicity [1].

What is the determinant of puberty?

50-80% age of puberty is determined by genetic factors. Environmental and physiological factors also influence on age of puberty (11). There is relationship between parental marital quality and daughters’ maturity, father absence in childhood and lower age menarche (12).

What are the major influences on the age of onset of menarche?

Besides genetics, menarche is also influenced by socioeconomic and environmental factors. Race, BMI, geography, nutritional habits, exercise all have been shown to influence menarcheal age; furthermore, Third World girls adopted in developed countries present early menarche.

What is puberty and what are some of the factors related to an early onset of puberty?

Both genetic and environmental factors are involved in the timing of puberty. Body fat and/or body composition may play a role in regulating the onset of puberty. Puberty is associated with the development of secondary sex characteristics and rapid growth.

What is the first occurrence of menstruation?

Menarche is the onset of menstruation. The average age for menarche in the United States is now 12.8 years. Menarche is preceded by puberty-induced body changes that occur between ages 9 and 16 years.

Which factor is most closely associated with menarche?

BODY SIZE factors, including height, weight, body mass index (BMI), and body fat percentage, have long been found to be strongly associated with the onset of menarche. The relationship of the growth spurt in height and weight to menarche has long been studied.

What is the significance of menarche and menopause?

A woman’s age at menarche (first menstrual period) and her age at menopause are the alpha and omega of her reproductive years. The timing of these milestones is critical for a woman’s health trajectory over her lifespan, as they are indicators of ovarian function and aging.

What are the most important nutrition concerns with the onset of puberty?

Increased caloric, protein, iron, calcium, zinc and folate needs have to be provided during this critical period of rapid growth. Severe primary or secondary malnutrition also can delay the onset and progression of puberty.

What is the importance of nutrition in adolescence?

Healthy eating during adolescence is important as body changes during this time affect an individual’s nutritional and dietary needs. Teens are becoming more independent and making many food decisions on their own. Many teens have a growth spurt and an increase in appetite and need healthy foods to meet their needs.

What factor is often related to the onset of puberty for females?

Both males and females experience hormonal changes before the 1st physical signs of puberty are manifested. As sex hormones increase, changes in the body’s proportion of lean, fat, and skeletal mass occur. For females an increase in body fat begins at 7 years and continues through ages 16-18 years.

What is the most accurate definition of puberty stage?

Puberty is a period in human development during which the body changes as people transition from childhood to adulthood. It usually begins between ages 8 and 14 for girls and 9 and 13 for boys. During puberty, older children and teens experience both sexual changes as well as growth spurts.

What is the first physical manifestation of puberty?

In boys, testicular enlargement is the first physical manifestation of puberty (and is termed gonadarche). Testes in prepubertal boys change little in size from about 1 year of age to the onset of puberty, averaging about 2–3 cm in length and about 1.5–2 cm in width.

How long does puberty last?

“Normal” puberty onset can range from ages 8-13 years of age and may take, on average, 1.5 to 6 years to complete.

Why does the age of puberty decline so early?

Most experts, including Steingraber, agree that the early decline in the age of puberty is likely directly attributable to decreased rates of disease and increased nutrition, and the ability of human females to adapt their sexual maturation to environmental cues (e.g., health, food and shelter).

What is the major landmark of puberty for females?

The major landmark of puberty for females is menarche, the onset of menstruation, which occurs on average between ages 12 and 13. For males, first ejaculation occurs on average at age 13. In the 21st century, the average age at which children, especially girls, reach puberty is lower compared to the 19th century,…