*Technical Question* What are the mechanisms for growth, especially during the teen years?

Question by calloonous: *Technical Question* What are the mechanisms for growth, especially during the teen years?
I am looking for an answer or answers that would relate to human biology, specifically at the cellular level. What hormones are related to bone activities? How are these hormones regulated by the body, age and other environmental factors? Further more, are such mechanisms consistent throughout the "growth" period, commonly known as until age 21? What website or other resources can I research into for this topic?


Best answer:

Answer by Smiley Girl
"Growth is triggered in both boys and girls by increased levels of the sex hormone testosterone. This chemical also triggers the sexual organs to develop. In fact, the relationship between growth of the skeleton and puberty is so strong that a teenager's developmental age can be measured by looking at the maturity of the bones in their hand and wrist."

"Control of Growth

Hormones are chemicals produced by special cells in glands and other organs of the body; most hormones are produced by cells in the endocrine glands. These hormones, which are produced in very small amounts, are released into the bloodstream and travel to the "target organ" or tissue where they exert their effect.

Several hormones are involved in regulating growth. Some act directly on target organs, while others act by triggering the production of other hormones, which activate specific organ functions necessary for growth. This finely tuned system can malfunction in several ways, causing abnormal growth.

The pituitary gland is often called the master gland because it produces several hormones that control the functions of other glands. It is located in the middle of the skull below the part of the brain called the hypothalamus. The pituitary gland has two distinct parts: An anterior (front) lobe and a posterior (rear) lobe. The pituitary gland secretes its hormones in response to chemical messages from the hypothalamus, the part of the brain to which it is connected.

Growth hormone is an anterior pituitary hormone whose main effect is to promote growth of body tissues. Other anterior pituitary hormones affect growth indirectly by working through other glands. These other hormones include:

Thyroid Stimulating Hormone (TSH) - causes the thyroid gland to produce thyroid hormone, which regulates body metabolism and is essential for normal growth.
Adrenocorticotropic Hormone (ACTH) - causes the adrenal glands to produce cortisol (stress hormone) and other hormones that enable the body to respond to stress. Too much cortisol will cause growth failure in a child.
Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH) - cause the sex glands (ovaries or testes) to produce sex hormones, which are necessary for adolescent sexual development and the growth spurt that accompanies puberty.
The major hormone produced by the posterior pituitary gland -is called vasopressin, or anti-diuretic hormone (ADH). It controls water output through the kidneys."

hope this helps a little

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How much height can a teen gain from taking human growth hormone?

Question by HOCKEY PRO K MOORE: How much height can a teen gain from taking human growth hormone?
So lets say a teen who was 15 was 5'2 and was able to get perscribed HGH. and was to do 3 months worth of it.

How much height can he possibly grow from it? Thanks


Best answer:

Answer by Live 4 life Cena.
Eat more! Don't be fooled because the article is referring to more of healthy, low-fat foods rather than junk food. Junk food can range from burgers to those cookies that you always bought! Adding a lot of vegetables and fruits to your diet will help you. Also, drinking bouillon, a Haitian soup, made with filtered water will help you feel full.

BasketballExercise every day! This could be the most difficult step to follow. But what you can do is actually start slowly then steady increase the amount of exercise. For example, today you will walk for 10 minutes, repeat this for the whole week. For the next week, double your workload. You may get leaner that way! The important thing is to get your heart rate up and start, now!
Feed your temptations once in a while. Go ahead and have that donut or slice of pizza, but before you do, drink a few glasses of water and eat a bowl of raw veggies such as cucumbers, celery, carrots, and tomatoes. They will fill you up and you will have very little room to eat the "junk" food.

Scrumptious!Consume things that have no calories. There are two things you eat and drink that contain no calories: water and fiber. The more of these you get into your diet, the better off you will be. For example, you can eat a pound of mixed salad greens with assorted raw vegetables (carrots, red cabbage, celery, broccoli, onion, etc.) with a low or no-calorie salad dressing and only have eaten 100-150 calories. This is because of the high water and fiber content of the salad and low calorie dressing. Also, eat lots of celery. It has only 8 calories, but amazingly, it takes more than 8 calories to digest it. So, you actually BURN calories by eating celery! It's not much, about 2 calories per 8 inch stalk, but it sure doesn't hurt.
Avoid sodas as much as possible. Instead, drink flavored water or unsweetened iced tea.
Take broth-based soups. They are a relatively low in calories. A commerically-available ready to eat "chicken and stars" soup may only have 80 calories for 1 serving, much less than diet "meal shakes" or nutrition bars.

These may help you.Practice good eating habits. Always use utensils and sit at the table. This stops you from eating precariously. Eating with your hands will mean that you take in more food in one scoop. Don't forget to eat slowly and stop when you're full. Similar to the above step, if you can't stop, drink up! Maybe your body is thirsty and hungry no more! Also, you can do any other chores (other than eating). For instance, go shopping, or play badminton with your friend, or play games on the computer!
Spread out your diet! Eat more small chunks of meals, rather than 3 big meals. If you eat 100-150 calories or so every two hours, your body stays in a higher-metabolism digesting mode. This allows you to burn more calories than eating just 3 meals a day.[1]

Source(s):
http://centerformedicalweightloss.com/la...
http://www.smallstep.gov/?gclid=CIqXsZjb...
http://exercise.about.com/cs/weightloss/...
http://www.fourhourworkweek.com/blog/200...
http://www.netdoctor.co.uk/health_advice...

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Are whey isolate protein supplements ok to use as a teen?

Question by Matt: Are whey isolate protein supplements ok to use as a teen?
I know you have to work out for them to work, and I have a plan for that. But in general, is whey isolate a good supplement to use? Btw, I'm staying away from anything with human growth hormone. Not sure about creatine because I don't know our school's athletics policy is on that, but any recommendations are welcome.


Best answer:

Answer by Steven
Yes protein is completely safe to use. Creatine wont be against your schools policy. I would use it, but only take about 2.5 grams a day.

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