Logs & Writing
This is a collection of my short and longer writings, lifestyle notes and blog, vlog, favorites, quotes, and other publications: the flow of present moments, now, current happenings and activities, mental states, immersion, focus, involvements, moods, feelings, and states of mind.
Our regulation of eating depends upon a complex accord of signaling chemicals - hormones.
The main trigger of appetite is ghrelin, which has acylated form and unacylated, the latter acts as an abolisher to the first. But there are about two dozen chemicals that play a supporting role, and about the same number of appetite suppressants like insulin (produced in the pancreas), leptin (in fat cells), and PYY and oxyntomodulin (in the digestive system). Such hormones suppress ghrelin release. If anything is wrong in this regulative system, overeating can be expected.
All these hormones travel through the liquids of the body with these messages and provide communication between the brain and the digestive system and its microbiome. If the main messengers are in low concentrations, others take their role.
Compared to other micronutrients, fats are less effective in suppressing hunger. Sugar and protein cause fast 70-percent drop in ghrelin both in rodents and humans, and fat reduces it much slower and only by half. Background ghrelin concentrations, pre-breakfast, rise as most people lose weight. But after several months of a weight-reducing low-fat diet, the levels remained unchanged. Simple sugars, particularly in isolated form, can affect choices of food and its amount, even for the next day. After a drink high in fructose, people may choose fattier foods than after one glucose-sweetened.
Heavy people misread or ignore hunger and satiety signals. Obese individuals usually have the lowest ghrelin levels, and anorexics very high. By normal-weight, more ghrelin production is suppressed while consuming more calories. When overweight, ghrelin drops the same after all meals - the same as in regular-weight people after a 1,000-calory meal.
Food preferences, feeding-regulating hormones, and gut-brain signaling depend on sleep too.
- Details
- Author: Lena Nechet
- ▲ Logs & Writing
- ▼ Essays & Notes
- Goals: learning
- Properties: formal
Hormones are chemical messengers that manage processes in an organism.
Tissues of human and animal bodies secrete hormones into fluids to travel until they reach specific cells and attach to the right receptors, which play a role of gatekeepers. A hormone can have many roles.
Environmental hormones, or hormone mimics, or endocrine disruptors, are the growing number of chemicals that the body may mistake for hormones.
Some plants, fungi, and bacteria have compounds that resemble human hormones well enough that it allows them to attach to some receptors, which would keep the body's genuine hormones from connecting to the cell and transferring the message. Pesticides and chemicals used in plastics can do this as well.
The human body makes about 50 different hormones, which orchestrate cells in the the body.
Most known hormones, their function area, production place, and some characteristics:
- Adrenaline (stress), by adrenal glands above the kidneys;
- Ghrelin (hunger), mostly in the stomach - low energy signals;
- Insulin (metabolic) - helps the body move sugar;
- Leptin (satiety), by fat cells - "enough to eat" signals or whether the energy should be burned or stored as fat.
- Melatonin (sleep ), by the brain’s pineal gland;
- Thyroxine (growth), by the thyroid;
- Estrogen (sex);
- Testosterone (sex), by the testes in males, by the ovaries and adrenal glands in females - tells the male body to develop masculine characteristics, such as facial and body hair, a deep voice and muscle strength; in female body promotes such traits as axillary and pubic hair growth, regulate sexual desire, vaginal lubrication, mood, and muscle development;
- Details
- Author: Lena Nechet
- ▲ Logs & Writing
- ▼ Essays & Notes
Poems × 9
My own verse.
Verse is a metrical writing.
Poem
- a verbal composition, in which the words are chosen for their sound
and for ideas and images they suggest, and are arranged in separate
lines, often ending in rhyme.
Poetry is a form of literature that uses aesthetic and
rhythmic qualities of language. This form of art is thousands years old,
and originated in Africa.
Essays & Notes × 62
My short and longer texts, from notes to formal essays, with lists, facts, and opinions.
Essays - short literary compositions, presenting ideas in a non-fictional way.
Notes - brief records, especially written down to aid the memory; comments, explanations.
Blog × 52
This is my weblog and personal journal: notable days and my lifestyle from running and swimming to frugan food, plus occasional informal reports and random anecdotes.
Journal - periodically and randomly published records of personal experiences and observations.
Anecdotes - brief accounts of an incident,
stories with a point to communicate an abstract idea about a person,
place, or thing through the concrete details of a short narrative.
Vlog × 33
My random video logs - videos from daily life and something notable to remember.