Hormones (also known as hormones), are organic molecules produced by the endocrine glands and released into the bloodstream to control the body's activities. They play an important role in regulating growth, development, metabolism, and reproduction.
Hormones come in a wide variety of forms, depending on the type of hormone and its function, but in general, hormones can be divided into three main groups:
- Group 1: Steroid Hormones: have a ring structure similar to cholesterol, including sex hormones (estrogen, testosterone) and cortisol. Soluble in lipids, easily passes through cell membranes.
- Group 2: Hormones Peptides and Proteins: are chains of amino acids linked together by peptide bonds. Not soluble in lipids, need receptors on the cell membrane to act. Examples: Insulin, glucagon, growth hormone (GH).
- Group 3: Amino acid-derived hormones: synthesized from amino acids, often have simpler structures than peptide and protein hormones.
The role of hormones in the body
- Regulation of growth and development: Growth hormone, sex hormones.
- Regulates metabolism: Insulin, glucagon, thyroxine.
- Homeostasis regulation: Aldosterone, ADH.
- Reproductive regulation: Sex hormones.
- Regulation of emotions and behavior: Adrenaline, noradrenaline.
Age: Age is a concept that refers to the length of time a person has lived from birth to the present, usually measured in years, months or days. Age is not just a number, but also reflects the physical, psychological and social changes that a person experiences during life. Age is an important factor that affects the production and activity of these hormones.
Hormonal changes with age
1. Puberty: This is the stage of strong growth hormones, especially sex hormones, causing obvious body changes in both men and women.
When does puberty begin? is an important transitional period from childhood to adulthood, marking physical, psychological and physiological development.
When does it start? There is no specific age, it can start earlier or later in each person, depending on many factors such as genetics (genetic genes from parents play an important role), health (obese children often reach puberty earlier), nutrition (a balanced and nutritious diet helps children develop healthily and at the right stage), living environment (exposure to chemicals, stress can also affect the puberty process) and adulthood (hormone levels are stable at the highest level, supporting optimal physiological functions). In developed countries, puberty usually begins around 9-12 years old (girls) and 10-13 years old (boys). However, this is only an average number and can vary greatly.
Signs: In girls, breasts begin to develop, pubic hair appears, and menstruation begins. In boys, the voice deepens, pubic hair grows, and the testicles and penis develop.
2. When is adulthood? This is a question that many people, especially young people, often ask.
Legally: In most countries, adulthood is defined as 18 years old. Once you reach this age, you are considered responsible for your actions and have the right to participate in social activities such as voting. Scientifically: Brain development continues until about age 25. Therefore, from a scientific perspective, many people believe that true psychological and cognitive maturity may occur later than the legal requirement.
Socially: Adulthood also depends on culture, society and different expectations. In some cultures, people consider getting married, having a stable job or being independent as signs of maturity.
So, what is maturity really? Maturity is not just a matter of age, but also involves many other factors such as: Responsibility, the ability to take responsibility for one's own decisions and actions; being financially independent, living independently and making decisions for oneself; building and maintaining healthy relationships; having emotional stability, the ability to control oneself and face difficulties; having insight into oneself, life and society.
3. Middle age: Hormone levels begin to decline, especially sex hormones, leading to symptoms such as menopause in women and decreased libido in men.
Middle age is a stage in life that lies between youth and old age. However, there is no exact age to determine the beginning and end of this stage. Middle age is often considered to be the period from 40 to 65 years old. However, this is only an estimate, and in reality, middle age can vary depending on many factors such as: In terms of health, people in good health often feel younger than their age and can prolong middle age. In terms of culture, each culture has a different concept of middle age. In terms of individuals, each person's perception of middle age is different. Some people feel old at 40, but others still feel young at 60. There is no exact definition of middle age, because: The diversity of each person has a different aging process, depending on genetics, lifestyle, living environment...; as social standards change, the concept of middle age also changes over time and depends on each society. Common changes in middle age: Physical changes (decreased ability to recover after exercise; decreased vision, hearing; appearance of bone and joint problems). Psychological changes (feeling worried about the future; wanting to spend more time with family; tending to look back on the past). Social changes (children grow up, leave home; may have to face the care of elderly parents).
4. Aging: Hormone decline continues, affecting many bodily functions, such as reduced bone mass, reduced immunity, and increased risk of disease. Aging is a natural stage in human life, marking the end of adulthood and the beginning of a new phase with physical, psychological, and social changes.
Each person and each culture has different concepts about aging. However, in general, aging is often associated with the following characteristics: Physical changes (decreased health, susceptibility to disease; reduced mobility, less sensitive senses; wrinkled skin, gray hair). Psychological changes (may feel lonely, bored; remember the past more; care more about health and safety). Social changes (retirement, having more free time; social relationships may change; may need care from others). In addition, there are other factors that affect the aging process such as: Genetics (genetic genes play an important role in the aging process); lifestyle (diet, exercise, living habits, stress ... all affect the aging rate); environment (environmental pollution, exposure to toxic substances can also accelerate the aging rate).
Major hormones and their roles
Estrogen: The main female hormone, plays an important role in the development of female sex characteristics, regulates menstruation and protects the cardiovascular system.
Testosterone: The primary male hormone, responsible for the development of male sex characteristics, strengthening of muscles and bones, and increasing sexual desire.
Growth hormone: Stimulates cell growth and development, helps maintain muscle and bone mass.
Thyroid hormone: Regulates metabolism, affects energy, body temperature and heart rate.
Cortisol: Stress hormones help the body cope with stress, but if they increase for a long time, they can be harmful to health.
Effects of hormonal changes
Hormonal changes with age can cause many symptoms and health problems, including:
- Menopause: Menstrual irregularities, hot flashes, vaginal dryness, mood swings.
- Low testosterone: Decreased libido, erectile dysfunction, decreased muscle mass, increased belly fat.
- Decreased bone density: Bone fractures, especially in the elderly.
- Metabolic disorders: Obesity, diabetes, cardiovascular disease.
- Mood disorders: Depression, anxiety.
How to deal with hormonal changes?
Healthy diet: Eat lots of green vegetables, fruits, whole grains, limit sweets, saturated fats and alcoholic beverages.
Exercise regularly: Helps boost heart health, improve mood and maintain a healthy weight.
Get enough sleep: Helps the body recover and produce hormones effectively.
Reduce stress: Practice relaxation techniques such as yoga and meditation.
Regular health monitoring: Consult your doctor for appropriate advice and treatment.