Puberty occurs when areas within the brain awaken beginning a cascade of hormone signals which conclude with the gonads (ovaries and testicles) increasing their production of the female and male sex hormones estrogen and testosterone. Under the influence of these hormones a child begins the transition from childhood to sexual maturity. In boys puberty is associated with a growth spurt, the appearance of facial, axillary (arm pit) and pubic hair, acne, deepening of the voice, growth of the testicles and penis while girls undergo a growth spurt, develop breasts, acne, pubic and axillary hair, and growth of the clitoris.
Historical data shows the average age of puberty today is many years sooner than in previous generations. Most experts attribute earlier puberty to better nutrition. A recent article in metabolism.com reviewed how “over-nutrition” accelerates obese children into puberty sooner (referred to as precocious puberty) than normal weight children. The latest studies on causes of precocious puberty suggests that a child’s social environment also exerts an important influence on the timing of puberty. Researchers in Madrid publishing in The Journal of Clinical Endocrinology and Metabolism 95:4305 2010 analyzed the age of puberty in normal children, adopted children and children whose families immigrated (children not adopted but subject to high levels of personal stress) to Spain. Adopted children were 25 times more likely than other groups of children to undergo precocious puberty (breast development before the age of 8 years in girls, and boys under 9 years of age with testicular growth). Over-all girls were 11 times more likely than boys to demonstrate precocious puberty.
Researchers speculate that socio-emotional stresses early in life of children who are later adopted result in changes in the brain that cause premature maturation of vital nerve pathways. This early brain maturation later results in stimulation of the pituitary gland, turning on the hormone pathways that cause puberty. This seems strange to me because various forms of deprivation in childhood can also delay puberty. For example, girls who have anorexia remain child-like in their body development and may fail to menstruate even into their late teens. A decade ago I studied hormone levels in adults during the stress of illness and surgery and found this lowered the sex hormone levels in their blood. This makes sense from an evolutionary point of view because during stressful conditions nature wisely cuts off the reproductive hormones. Why make babies if the environment is hostile in some way? Why the opposite occurs in children under stress of adoption is an interesting but unanswered question.
Gary Pepper, M.D.,
Metabolism.com is pleased to share the following article provided by our guest contributor, Tom Hines.
In some ways, your body is like a machine — it works best when itâ€™s properly maintained and tuned up. Food is your fuel and when you fill your tank with lousy fuel, your engine sputters and stalls. If your bodyâ€™s engine is sluggish and needs a jumpstart, spirulina and other green superfoods can help deliver the energy necessary to keep the machine running smoothly, avoiding a breakdown.
Spirulina is a â€˜green superfood,â€™ a term used to describe various nutrient-rich natural supplements, which include Chlorella, Wheat Grass, Barley Grass, Alfalfa and Kelp. Unlike most store-bought supplements, the concentrated vitamins and minerals they provide are not synthetic. Green superfoods are whole foods harvested directly from nature and are exactly what your body needs to offset stress and to clear away toxins.
SAD is very sad indeed
S.A.D. stands for Standard American Diet â€“ there was never a more apt acronym. The majority of U.S. citizens today subsist on processed fast food laden with refined carbohydrates and saturated fats. Meats are frequently tainted with growth hormones, antibiotics and pathogens. For people who manage to work the recommended five to nine daily servings of fruit and vegetables into their diet, modern agricultural techniques have stripped crops of many vitamins and minerals.
Processed and cooked foods, which are the cornerstones of the S.A.D, and beverages such as coffee, tea, soft drinks and alcohol create an acidic blood pH, encouraging the growth of bacteria, fungus and mold. In an overly acidic environment, the body literally begins to compost. Illnesses such as heart disease and diabetes are often the result of the composting process. Green superfoods have an alkalizing effect, counteracting the acidity caused by poor diet, stress and toxic overload and setting the stage for a return to good health.
Spirulina and Chlorella, the most super of the green superfoods
Spirulina is a blue-green algae whose name comes from its spiral coil shape. High quality spirulina thrives in both salt and fresh water in tropical climates and it is known to have nourished the Aztecs, who harvested the algae from Lake Texcoco. Some of the benefits of Spirulina are:
- Contains all of the essential amino acids vital to human health
- An excellent protein source for all vegetarians, including vegans
- Balances blood sugar by boosting glycogen, which offsets insulin
- Rich in GLA (gamma linolenic acid) and other essential fatty acids Delivers an array of vitamins, including the all-important folic acid
- High in potassium and a dozen other minerals
- Improves focus and mental clarity
Chlorella is a single-celled green algae whose name is derived from Greek and Latin words that translate to â€œlittle green.â€ In the 1940â€™s and 1950â€™s, intensive research was done on little green algaeâ€™s potential role in solving world hunger, due to its high protein content and its bounty of beneficial vitamins and minerals. The natural health community, meanwhile, has always touted Chlorellaâ€™s health-imparting properties, particularly in the area of detoxification. In addition to being the very best source of chlorophyll, here are some more of Chlorella supplement benefits:
- Rids the body of toxins and stored waste
- Tones and cleanses the blood
- Reduces body odor, acting as an internal deodorant
- Improves bowel health and reduces flatulence
- Naturally freshens the breath
- Clears the skin
Cereal grasses and seaweed
Wheat grass is a popular juicing ingredient due to its superior nutrition, which it delivers without raising blood sugar. It also helps to lower blood pressure.
Barley grass alkalizes the blood and strengthens the digestive system.
Alfalfa helps reduce LDL (low-density lipoprotein) or bad cholesterol, without affecting levels of HDL (high-density lipoprotein) or good cholesterol and studies are underway to determine its effectiveness at lowering blood sugar levels and its ability to invigorate the immune system.
Kelp is a brown-algae seaweed, which grows in abundant kelp forests in shallow oceans all around the world. Kelp is rich in iodine and therefore beneficial to overall thyroid health. Its high vitamin and mineral content promotes pituitary and adrenal gland health as well. Itâ€™s renowned for its contribution to lustrous hair and skin. Taken shortly after exposure, it can also mitigate the negative ramifications of heavy metals and irradiation.
Making the most of green superfoods
Incorporating Spirulina, Chlorella and other green superfoods into the diet is easy, since they are all available in powdered form. Simply mix the desired amount into salad dressing, or add it to soup, juice or water. The taste is fresh and green and the active enzymes of living food add a healthy dimension even to a less than healthy meal. Of course, pregnant or breastfeeding women and people taking medications should consult with their doctors before incorporating any new food into their diets.
Many people who regularly incorporate green superfoods into their daily regimen have reported increased energy, mental clarity and an overall healthy glow. When stress, toxic thoughts and an imperfect diet have left your bodyâ€™s engine sluggish, green superfoods are a quick and easy way to put yourself back on the road to health. Long may you run!
About the Author
Tom Hines, co-owner of NutritionGeeks.com (MN #1 Now Foods herbal provider), has been working in the nutrition industry since 1997, is a competitive powerlifter, lives with his wife Netti and three boys TJ, Grady and Brock on the prairie in west central Minnesota, spends his leisure time coaching youth wrestling, working with his horses and being play toy #1 for his boys.
A member of metabolism.com, Louise Infante, is a great enthusiast of the vegetarian life style. Louise submitted this blog to metabolism.com so we could help her get the word out. I found the article extremely informative and hope you do too. Thanks Louise for your effort.
Here is what Louise has to say:
Give me five minutes and Iâ€™ll give you 1 very good reason for being vegetarian.
While fish is the most important dietary way to obtain the long-chain omega-3s eicosapentaenoic acid and docosahexaenoic acid, which has been shown to be essential in supporting brain health, low intake of eicosapentaenoic acid and docosahexaenoic acid in vegetarians does not adversely affect mood, reported by a new study (Nutr J. 2010;9:26. DOI:10.1186/1475-2891-9-26).
A research team from Arizona State University conducted a cross-sectional study to compare the mood of vegetarians who never eat fish with the mood of healthy omnivorous adults.
An overall total of 138 healthy Seventh Day Adventist adults residing in Arizona and California (64 vegetarians and 79 non-vegetarians) were enrolled in the study and completed a health history questionnaire, food frequency questionnaire and 2 psychometric tests, the Depression Anxiety Stress Scale and also the Profile of Mood States..
Vegetarians had significantly lower mean intakes of eicosapentaenoic acid, docosahexaenoic acid and the omega-6 arachidonic acid; they had higher intakes of the omega-3 alpha-linolenic acid and the omega-6 linoleic acid.
“Seed oils are the richest sources of Î±-linolenic acid, notably those of rapeseed (canola), soybeans, walnuts, flaxseed (Linseed oil), clary sage seeds, perilla, chia, and hemp.”
However, the vegetarians also reported significantly less negative emotion than omnivores in both psychometric tests. Mean total psychometric scores were positively linked to the mean intakes of eicosapentaenoic acid, docosahexaenoic acid and arachidonic acid , and inversely related to alpha-linolenic acid and linolenic acid intake.
The study team noted there is also the possibility that vegetarians may make better dietary choices and could generally be healthier and happier.
If you want to give it a try, here is an example of vegetarian recipe based on Italian cuisine
Italian Spaghetti with Zucchini
* 17 oz. Spaghetti
* 24 oz. Of thin sliced zucchini
* 1 / 2 cup walnuts oil
* A few basil leaves
* 2 tablespoons of yeast flakes
* Salt and pepper
In a skillet or frying pan heat the oil and when hot, add garlic and zucchini. Raise heat and stir often to complete their cooking. They need to be golden and crispy outside and tender inside. Cook the pasta, drain and sautÃ© in pan with zucchini, basil and yeast. Serve immediately.
Zucchini contain fewer calories and possess no fat. But they are a good source of potassium, e vitamin, ascorbic acid, folate, lutein and zeaxanthin.
These types of nutrients are extremely sensitive to heat and to enjoy their benefits you should find a quick solution to cook or even eat raw in salads.
From the therapeutic perspective, zucchini have laxative, refreshing, anti-inflammatory, diuretic and detoxifying action.
About the Author – Louise Infante writes for vegetarian menu blog, her personal hobby blog centered on vegetarian cooking tips to help people live better.
Hey everyone. Itâ€™s been a while since i checked back w/you guys so hereâ€™s an update- it will be 11 months on the 25th of July for me. I have continued to gain in spite of my efforts -cutting calories, upping activity, working on my stress levels etc â€¦ I have gained 22 lbs back of the 30 I had lost before I quit. I have gone to the doctor and gotten checked out and it may actually be a thyroid problem [my TSH is deficient ..?..] Evidently smoking not only assaults the lungs but also other thingsâ€¦ You guys may want to talk to your doctors even if itâ€™s just to rule out anything. Iâ€™m hoping that sheâ€™ll put me on meds to tell the truth. If itâ€™s low but not enough to do anythingâ€¦ I really donâ€™t think I can handle the thought of that right nowâ€¦ Anyway, Iâ€™ll let you all know what happens-cross your fingers n send me some good vibes Good luck everyone
While many members of metabolism.com struggle with low metabolism, fatigue and weight gain, there are those who struggle with the opposite. Being underweight can be as difficult to cope with as being overweight. Here is advice from one of our members who is an emergency medical technician, on how he has adjusted to this issue.
I am 28 y/o 5â€²9â€³ and I weigh 146 lbs. I have a high metabolism and it bothers me, too. I currently go to the gym at my rescue squad (which is free, thank god!) 3 days a week. I know that I have to eat more protein, carbs and high calorie foods in order to â€œpack on the lbsâ€ especially since I workout regularly, but it is difficult to really discipline myself to eat them daily and in abundance because I get tired or sick of eating them. Anything worthwhile isnâ€™t easy so its discipline, discipline, and more discipline.. and its pasta, pasta, and more pasta lol
I used to be really stressed out through highschool and college, too.. because of being in school, being underweight, having mild acne, not sleeping much at night, etc. Finally, I am in a good place in my life. I am with EMS, got a good job as an EMT, I go to the gym frequently, manage my stress levels with quiet/down time to myself and have cleared my acne.. I am slo getting plenty of sleep at night, which is a huge factor for those of you who work out in the gym.. because you know your muscles need time to repair and rebuild (plenty of water helps, too.. ) STRESS can cause weight loss so it might be a good idea for those of you with high stress levels to MAKE time for yourself to reduce stress. Consider every day events and feelings that cause you stress and work on eliminating them.. not for peace of body, but for peace of mind, too. Pilates, yoga, breathing exercises, meditation and a good self image are all good sources of stress relief.
How you see yourself is who you are. If you see yourself as being weak and nothing then you are telling yourself thats who you are.. and ultimately that is who you will be. A huge part of becoming someone you want to be (the best version of yourself) is to become that person from the inside out. Think like the beast and tell yourself â€œI am a raging beast!â€ When youâ€™re at the gym, let out some groaning and moaning or shout something aggressive when you reach your peak rep of whatever set youâ€™re doing. It will push you to go harder. What you put into the gym is what you get out of it and I have learned that recently. Iâ€™ve got to â€œstep it upâ€.
Plenty of water, good/lean protein, carbs, vitamins, sleep at night (at least 8 hrs) and aggressive workouts are doing it for me, little by little, but Iâ€™ve got to step it up. My goal is 160 lbs by summer 2010. I am going to acheive my goals.. ARE YOU??