Millennia of selective breeding have resulted in varieties that display a wide range of traits; e.g. suited for a particular environments/latitudes, producing different ratios and compositions of terpenoids and cannabinoids (CBD, THC, CBG, CBC, CBN...etc.), fibre quality, oil/seed yield, etc. Hemp grown for fiber is planted closely, resulting in tall, slender plants with long fibers.[citation needed]
^ Jump up to: a b c This paper begins with a history of hemp use and then describes how hemp was constructed as a dangerous crop in the U.S. The paper then discusses the potential of hemp as an alternative crop. Luginbuhl, April M. (2001). "Industrial hemp (Cannabis sativa L): The geography of a controversial plant". The California Geographer. 41. California Geographical Society. pp. 1–14. hdl:10211.2/2738. Hemp contains less than 1% THC, or tetrahydrocannabinols, the psychoactive property in marijuana. In other words, smoking hemp cannot create a 'high.' ... The dense growth of hemp eliminates other weeds.... The best growing technique for hemp, planting 300 to 500 plants per square meter, also helps authorities easily tell the hemp from marijuana, which is a plant that is less densely cultivated. (Roulac 1997; 149).
Hemp has been grown for millennia in Asia and the Middle East for its fibre. Commercial production of hemp in the West took off in the eighteenth century, but was grown in the sixteenth century in eastern England.[148] Because of colonial and naval expansion of the era, economies needed large quantities of hemp for rope and oakum. In the early 1940s, world production of hemp fiber ranged from 250 000 to 350 000 metric tonnes, Russia was the biggest producer.[130]
In the Australian states of Tasmania, Victoria, Queensland, Western Australia, New South Wales, and most recently, South Australia, the state governments have issued licences to grow hemp for industrial use. The first to initiate modern research into the potential of cannabis was the state of Tasmania, which pioneered the licensing of hemp during the early 1990s. The state of Victoria was an early adopter in 1998, and has reissued the regulation in 2008.[77]
There are no known allergic reactions to hemp seed, but the contact that the seeds may have had with THC-covered plant parts could result in small residues of THC on the seeds. This means that you could possibly experience the feeling of being “high” or under the effect of the psychotropic chemical. This effect of hemp seed is quite rare and isn’t harmful, but it can be an uncomfortable feeling if not anticipated.
Use of industrial hemp plant and its cultivation was commonplace until the 1900s, when it was associated with its genetic sibling a.k.a. Drug-Type Cannabis species (which contain higher levels of psychoactive THC). Influential groups misconstrued hemp as a dangerous "drug",[56] even though hemp is not a recreational drug and has the potential to be a sustainable and profitable crop for many farmers due to hemps medical, structural and dietary uses.[57][2]

As of December 2018, Hemp is federally legal to grow again in the United States. The government passed the Hemp Farming Act of 2018, part of the 2018 Farm Bill[95] signed by President Donald Trump on 20 December 2018.[95] This bill changed hemp from a controlled substance to an agricultural commodity, legalizing hemp federally, which made it easier for farmers to get production licenses, get loans to grow hemp, and allowed them to get federal crop insurance.[95] Some states still consider it illegal to grow hemp, but 41 states have begun the process to make hemp legal to grow at the state level, as of 2019.[96]

Two tablespoons of hemp seed serve up 90 calories and six grams of fat. Watching what you eat? I say, "Keep sprinkling!" That two-tablespoon serving size offers two grams of fiber, five grams of protein, 300 mg of potassium, 15 percent of your vitamin-A requirement and 25 percent of your daily iron needs. It’s hard to find another food that nutrient-dense.

Hemp seed has a wide range of effects on heart health, including the proper balance of cholesterol or fatty acids in the body. Most specialists recommended a specific balance of 3:1 or 4:1 omega-6 fatty acid to omega-3 fatty acid. According to Dr. Delfin Rodriguez Leyva’s, ( Department of Physiology, University of Manitoba and Institute of Cardiovascular Sciences, St Boniface Hospital Research Centre, Canada) report in the Nutrition and Metabolism Journal, this seed is one of the only plant substances in the world where this is the normal balance already. The proper balance of saturated fats in the body is essential to the normal functioning of the body, and the prevention of various conditions, including atherosclerosis, heart attacks, and strokes. Furthermore, since this seed has a high content of fiber, heart health is further boosted because fiber scrapes off excess cholesterol from the artery walls that also lead to heart conditions, and takes them to the excretory system where they can be processed and eliminated.