Human hair waste may be a viable option as fertilizer for edible crops
Cigarette smoking during pregnancy is associated with potentially harmful changes in both maternal and fetal thyroid function, according to a new study accepted for publication in The Endocrine Society’s Journal of Clinical Endocrinology & Metabolism ( JCEM ). “We studied the influence of cigarette smoking on thyroid function of two groups of women at different
Full Post: Smoking during pregnancy impacts thyroid function of mother and fetus
Agricultural crop production relies on composted waste materials and byproducts, such as animal manure, municipal solid waste composts, and sewage sludge, as a necessary nutrient source.
Studies have shown that human hair, a readily available waste generated from barbershops and hair salons, combined with additional compost, is an additional nutrient source for crops. Although human hair has become commercially available to crop producers in the past couple years, it has not been proven to be an exclusive source of nutrients in greenhouse container production.
Vlatcho D. Zheljazkov, Juan L. Silva, Mandar Patel, Jelena Stojanovic, Youkai. Lu, Taejo Kim, and Thomas Horgan of Mississippi State University recently published a research study in HortTechnology designed to determine whether commercially available noncomposted hair waste cubes would support plant growth in horticulture crops as a sole source of nutrients.
The study compared the productivity of four crops: lettuce, wormwood, yellow poppy, and feverfew, grown in commercial growth medium using untreated control, noncomposted hair cubes at differing weights, a controlled-release fertilizer and a water-soluble fertilizer. Results showed that, with the addition of hair waste cubes, yields increased relative to the untreated control but were lower than yields in the inorganic treatments, suggesting that hair waste should not be used as a single source for fast-growing plants such as lettuce.
Zheljazkov suggests that, “once the degradation and mineralization of hair waste starts, it can provide sufficient nutrients to container-grown plants and ensure similar yields to those obtained with the commonly used fertilizers in horticulture. However, it takes time for the hair to start degrading and releasing nutrients, as is reflected in lower yields in the hair treatments relative to the inorganic fertilizers for lettuce and wormwood.”
Because of possible health concerns, further research is necessary to determine whether human hair waste is a viable option as fertilizer for edible crops.
To help provide a streamlined system for disposing of hazardous pharmaceutical waste that is protective of public health and the environment, the U.S. Environmental Protection Agency is proposing to add hazardous pharmaceutical waste to the Universal Waste Rule. The proposed rule encourages generators to dispose of pharmaceutical waste that is classified as non-hazardous under the
Full Post: EPA seeks public comment on proposal to add hazardous pharmaceutical waste to universal waste rule
The global giant Unilever which specialises in home, personal care and foods products has promised women a new deodorant which will apparently slow down the growth of underarm hair. Unilever plans to launch the products in the UK next month which will be presented as both sprays and ‘roll-on’ deodorants under the names Sure
Full Post: New deodorant promises to slow down the growth of underarm hair
Scientists in Beijing say they have discovered a genetic cause for a certain type of premature baldness and they suggest their discovery offers hope in future that those who inherit this rare type of baldness will eventually be able to keep their hair. A team from Peking Union Medical College led by Xue Zhang
Full Post: Culprit found in rare type of baldness
New research in an animal model suggests that a diet high in inorganic phosphates, which are found in a variety of processed foods including meats, cheeses, beverages, and bakery products, might speed growth of lung cancer tumors and may even contribute to the development of those tumors in individuals predisposed to the disease. The study
Full Post: Diet high in inorganic phosphates increases risk of lung cancer
Every day we all lose thousands and thousands of scalp hairs – men and women. New follicles grow in their place all the time so we don’t notice this hair loss, unless you are going bald. If this is the case, you are probably a man in the 25-40 year age group. Baldness affects men more
Full Post: Propecia is one such drug that has proved to be very successful in treating male baldness