Jeffrey Dean Leach (born 1967 in Boston, Texas, known as Jeff Leach) is an American businessman and microbiome researcher from Texas. [1] He is known for his work on the gut microbiome of the Hadza hunter gatherers, [2] founding the Human Food Project, publishing archeology magazines, deceptive business practices, being accused of sexual assault, and founding the Naked Pizza restaurant chain.
Leach studied archaeology at the University of Texas and New Mexico State University. [3] In the 1990s, Leach was affiliated to the Center for Archaeological Research at the University of Texas at San Antonio, [4] co-founded the Center for Indigenous Research in El Paso, Texas with Ray Maudlin. [5]
He then founded the Paleobiotics lab in New Mexico [6] and collaborated with Kristin Sobolik of the University of Maine. [7] In 2012 he co-founded the Human Food Project [8] and the American Gut Project with Jack Gilbert and Rob Knight, publishing results in 2018. [9] As part of his work on the gut microbiome of the Tanzanian Hadza hunter gatherers he had a fecal transplant from a Hadza man. [10] This was criticized by anthropologist John Hawks [11] and science writer Ed Yong, who said of the idea of inducing a healthy microbiome that "This reasoning is faulty". [12]
He was a Visiting Research Fellow at King's College London. In 2010 he said he was studying for a Ph.D. at the University of Leicester [3] and in 2019 he said he was pursuing a Ph.D. at the University of York. [1]
In the late 1990s and early 2000s, Leach was the publisher of Discover Archaeology (launched in 1998), [13] Dinosaur Magazine, Egypt Revealed, and Archeology Today. He used Beto O'Rourke's web design company Stanton Street Design. [14] In 2003, a court in Texas found he had sold subscriptions for magazines that had closed and had charged for a tour of the Middle East that did not happen. Details of this civil court case were recently published in Science magazine [1] "Leach was found to have violated laws against deceptive trade practices. The Texas attorney general alleged that Leach had sold subscriptions to magazines that had stopped publishing and had accepted more than $100,000 in payments for a tour in Egypt that was to feature the actor Omar Sharif, but was never organized. Leach failed to contest the claims and the court found them admitted and proven."
In 2001, he was involved with Mike Kammerer in plans to find Amelia Earhart's plane. [15] [16]
Leach co-founded Naked Pizza, originally called World's Healthiest Pizza, in New Orleans in 2006 with Randy Crochet, aiming to create a healthy pizza. They used whole grains and inulin from agave. They recovered after Hurricane Katrina destroyed their restaurant and gained investors, notably Mark Cuban in 2009, who encouraged them to use social media to attract further investment including from the Kraft family. [17] [18] [19] [6] Leach sold his share as expansion plans failed and the flagship store closed in 2016. [20] While running Naked Pizza, Leach and a man named Jeff Reifman won a competition in 2009 to find Wired journalist Evan Ratliff, who was in hiding for a month. [21]
Leach moved to ghost town Terlingua from Austin in 2013. In 2017 he founded Basecamp Terlingua, a holiday rentals company. [22] In 2019, he founded a company marketing the alcoholic drink sotol and a festival dedicated to the drink with his girlfriend. [23] [24]
He grew up in Boston, Texas [3] and is from Austin, Texas. With his ex-wife he has a daughter, born around 2000, whose type 1 diabetes diagnosis aged 2 led him into researching healthy food and biology. [18] His children and their mother lived in Canada in 2010. [3]
In late 2019, Leach was accused of multiple counts of assault by four women and a man, including sexual assault. [1] [25] [26] Leach denies the allegations and unsuccessfully sued an accuser for defamation, [27] though his appeal to the Eighth Court of Appeals in El Paso in March 2020 is still pending. Airbnb removed his Basecamp Terlingua from its listings in November 2019, following the allegations. [28] He was indicted by a grand jury in February 2020 for an alleged 2014 assault, with a $20,000 bond from Brewster County sheriff's office. [29] At a hearing in December 2020, Leach declined a plea deal by DA Sandy Wilson and Judge Roy Ferguson confirmed that the case would go to trial, likely in August 2021. [28] The indictment was subsequently dropped, and a prolonged defamation case initiated against the accusers. [30]
Food additives are substances added to food to preserve flavor or enhance taste, appearance, or other sensory qualities. Some additives have been used for centuries as part of an effort to preserve food, for example vinegar (pickling), salt (salting), smoke (smoking), sugar (crystallization), etc. This allows for longer-lasting foods such as bacon, sweets or wines. With the advent of ultra-processed foods in the second half of the twentieth century, many additives have been introduced, of both natural and artificial origin. Food additives also include substances that may be introduced to food indirectly in the manufacturing process, through packaging, or during storage or transport.
The human microbiome is the aggregate of all microbiota that reside on or within human tissues and biofluids along with the corresponding anatomical sites in which they reside, including the gastrointestinal tract, skin, mammary glands, seminal fluid, uterus, ovarian follicles, lung, saliva, oral mucosa, conjunctiva, and the biliary tract. Types of human microbiota include bacteria, archaea, fungi, protists, and viruses. Though micro-animals can also live on the human body, they are typically excluded from this definition. In the context of genomics, the term human microbiome is sometimes used to refer to the collective genomes of resident microorganisms; however, the term human metagenome has the same meaning.
Lunchables is an American brand of food and snacks manufactured by Kraft Heinz in Chicago, Illinois, and marketed under the Oscar Mayer brand. They were initially introduced in Seattle in 1988 before being released nationally in 1989. Many Lunchables products are produced in a Garland, Texas, facility, and are then distributed across the United States.
The Clostridia are a highly polyphyletic class of Bacillota, including Clostridium and other similar genera. They are distinguished from the Bacilli by lacking aerobic respiration. They are obligate anaerobes and oxygen is toxic to them. Species of the class Clostridia are often but not always Gram-positive and have the ability to form spores. Studies show they are not a monophyletic group, and their relationships are not entirely certain. Currently, most are placed in a single order called Clostridiales, but this is not a natural group and is likely to be redefined in the future.
Terlingua is a mining district and census-designated place (CDP) in southwestern Brewster County, Texas, United States. It is located near the Rio Grande and the villages of Lajitas and Study Butte, Texas, as well as the Mexican state of Chihuahua. The discovery of cinnabar, from which the metal mercury is extracted, in the mid-1880s brought miners to the area, creating a city of 2,000 people. The only remnants of the mining days are a ghost town of the Howard Perry-owned Chisos Mining Company and several nearby capped and abandoned mines: the California Hill, the Rainbow, the 248, and the Study Butte mines. The mineral terlinguaite was first found in the vicinity of California Hill.
Gut microbiota, gut microbiome, or gut flora are the microorganisms, including bacteria, archaea, fungi, and viruses, that live in the digestive tracts of animals. The gastrointestinal metagenome is the aggregate of all the genomes of the gut microbiota. The gut is the main location of the human microbiome. The gut microbiota has broad impacts, including effects on colonization, resistance to pathogens, maintaining the intestinal epithelium, metabolizing dietary and pharmaceutical compounds, controlling immune function, and even behavior through the gut–brain axis.
Dysbiosis is characterized by a disruption to the microbiome resulting in an imbalance in the microbiota, changes in their functional composition and metabolic activities, or a shift in their local distribution. For example, a part of the human microbiota such as the skin flora, gut flora, or vaginal flora, can become deranged, with normally dominating species underrepresented and normally outcompeted or contained species increasing to fill the void. Similar to the human gut microbiome, diverse microbes colonize the plant rhizosphere, and dysbiosis in the rhizosphere, can negatively impact plant health. Dysbiosis is most commonly reported as a condition in the gastrointestinal tract or plant rhizosphere.
The term "infectobesity" refers to the hypothesis that obesity in humans can be caused by pathogenic organisms, and the emerging field of medical research that studies the relationship between pathogens and weight gain. The term was coined in 2001 by Dr. Nikhil V. Dhurandhar, at the Pennington Biomedical Research Center.
The Hadza, or Hadzabe, are a protected hunter-gatherer Tanzanian indigenous ethnic group, primarily based in Baray, an administrative ward within Karatu District in southwest Arusha Region. They live around the Lake Eyasi basin in the central Rift Valley and in the neighboring Serengeti Plateau. As descendants of Tanzania's aboriginal, pre-Bantu expansion hunter-gatherer population, they have probably occupied their current territory for thousands of years with relatively little modification to their basic way of life until the last century. They have no known close genetic relatives and their language is considered an isolate.
Joseph Francis Tolbert, better known as Frank X. Tolbert, was a Texas journalist, historian, and chili enthusiast. For the Dallas Morning News, he wrote a local history column called Tolbert's Texas that ran from 1946 until his death in 1984.
Skin flora, also called skin microbiota, refers to microbiota that reside on the skin, typically human skin.
Vaginal flora, vaginal microbiota or vaginal microbiome are the microorganisms that colonize the vagina. They were discovered by the German gynecologist Albert Döderlein in 1892 and are part of the overall human flora. The amount and type of bacteria present have significant implications for an individual's overall health. The primary colonizing bacteria of a healthy individual are of the genus Lactobacillus, such as L. crispatus, and the lactic acid they produce is thought to protect against infection by pathogenic species.
Microbiota are the range of microorganisms that may be commensal, mutualistic, or pathogenic found in and on all multicellular organisms, including plants. Microbiota include bacteria, archaea, protists, fungi, and viruses, and have been found to be crucial for immunologic, hormonal, and metabolic homeostasis of their host.
William R. Davis is a Milwaukee-based American cardiologist, low-carbohydrate diet advocate and author of health books known for his stance against "modern wheat", which he labels a "perfect, chronic poison."
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