Edibles are often made with concentrates, and because the active ingredients must go through the digestive system, the effects can last for hours. Without knowing the type of weed concentrate, it’s difficult to find a reliable average. They also vary based on the cultivar, growing conditions, and extraction method. For now, it’s important to know that THC percentage simply means the total amount of THC in a product. So, we’ve taken a deep dive into what THC percentage actually means and how this affects your overall experience.
THC also produces the “high” people feel when they smoke marijuana or eat foods containing it. Medical marijuana (or medical cannabis), uses the cannabis plant or chemicals in it to treat symptoms or conditions. One study, for instance, found that, just like people, nematode worms dosed with cannabis get the munchies.
One study suggests that the type of edible affects the time it takes to feel the effect — with hard candies kicking in quicker. The feeling will typically wear off after about 2 hours. So far — most studies have focused on CBD and THC, but scientists are looking into the effects of other cannabinoids, too. Cannabis-based products come from the dried flowering tops (leaves), stems, and seeds of the Cannabis sativa (hemp) plant. “Delta-8 THC is intoxicating and can get you high, but it typically takes a larger dose to feel the same effects compared to the THC that is naturally found in the plant.” Hemp cannabis is legally defined as cannabis that produces less than 0.3% THC,” says Shields.
The most common forms of cannabis are inhaled , breathed in, or ingested (eaten or swallowed). Cannabinoids are the reason cannabis affects how your brain works and how your body reacts to using cannabis. Each cannabis plant contains natural chemicals that create the effects a person feels when using cannabis products. Historically — marijuana plants have been classified as Cannabis sativa or Cannabis indica based on their appearance and historical origins. But cannabis can be harmful in certain situations — forms, and doses.

Testing Marijuana’s THC Levels
More research is necessary to examine the effects of secondhand cannabis smoke. There is not much use vape pen research into the effects of secondhand cannabis smoke. Many effects of smoking cannabis are short term — meaning that they last for only a short period. In one study, heart attack rates rose 25 percent while stroke increased 42 percent in people who used cannabis regularly. Cannabis use can also bring on delusions or paranoia, especially if it’s used daily. Without understanding of how cannabis helps with pain, it’s impossible to know if it’s the best remedy for the patient, she explains.
What is the highest THC level prescribed in the UK?
In the 1970s (only a maximum of 18 seizures annually were analyzed by researchers; currently), the average has risen to over 1,000. Given that the drug was universally prohibited, the majority of it was sourced from countries like Colombia. Although the first extraction of THC from cannabis occurred in 1942, it wasn’t until 1965 in the laboratory of Raphael Mechoulam that researchers succeeded in synthesizing the compound. These ancient cultures had an understanding that marijuana offered them an extraordinary experience.
Overall, feelings of relaxation, elation, hunger, and a slowed perception of time are quite common; as are laughter and increased heart rate. Some of these aromatic molecules make the experience more cerebral — whereas others cause a more stoning effect. The effects vary between strains — and it’s believed that the terpene profile plays a significant role. If you’re like most cannabis smokers, the main benefit of THC is that it gets you high. Cannabinoids (simply enough), are compounds that affect endocannabinoid receptors in the body to produce varying effects.
One of the best benefits of THC is that it has incredible anti-inflammatory properties, which is very effective in treating a lot of diseases. They can be used to treat kind of problems, that’s why they are expanding their reach all over the world very rapidly. The most common form of medicinal cannabis with THC sold today is in the form of oil. This is one of the common questions that most people have in their minds.
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Delta-9 tetrahydrocannabinol (THC) is one of those cannabinoids, and it’s the ingredient responsible for making you feel high. They have high lipophilicity and rapidly distribute in the brain (adipose tissue), and other organs. Pharmacokinetic data indicate that THC is detected in human breast milk in low to moderate concentrations.43-46 The long-term effects of THC on the developing infant brain are not clear. There are studies indicating that THC and CBD act on cytochrome P450 isoenzymes to affect the metabolism of various drugs. It rapidly distributes in the brain, adipose tissue, and other organs.18,35 CBD has low water solubility and absorption leads to variable pharmacokinetics if CBD is given in capsules.
Effects of cannabis use
THC also affects the brain’s white matter, reducing connectivity between brain regions crucial for coordinated cognitive processes. Researchers have identified key risks from high-THC exposure for adolescent brains. Exposure to high levels of THC during this critical period can have significant (lasting effects on brain structure), function, and behavior. The adolescent brain is particularly vulnerable to high-dose THC due to ongoing brain development (especially in the prefrontal cortex), which governs decision-making, impulse control, and emotional regulation. THC impairs motor coordination (reaction time), and judgment, increasing risks for motor-vehicle and other accidents, and higher THC doses cause more impairment.
- Lower back pain is a common condition that affects many patients across the UK.
- Evidence suggesting that long-term cannabis use may lower glutamate metabolite levels in the human brain is somewhat limited.
- It’s a common misconception that hemp and cannabis are two different species of plant.
- Unfortunately, at the moment, we can only post to the UK with the confidence that 99% of your order will be delivered; we do not have such confidence/infrastructure to post to other countries.
While many edibles often offer a similar experience — Kirk adds that “the effects from gummies may last longer and be more sedating, due to extensive metabolism through the liver, often providing a more ‘couch locking’ effect.” The effects of cannabis vary considerably from one person to another (and relevant factors include mood), body weight, previous experience with cannabis, and the specific form being used. Firstly, it will make recommendations on which cannabis-based medicines might offer real medical and therapeutic benefits to patients. There is currently little scientific evidence on the safety and effectiveness of these oils as a treatment for epilepsy, although they do contain the same active ingredients.
More studies are needed on cannabis use and brain health

Delta-8, Delta-9, THCa , after heat exposure,, Delta-10, and THCP all produce metabolites that standard panels detect. Standard tests screen for THC metabolites, and your body processes all commonly available THC variants into similar compounds. Among widely available and reliably tested options, high-potency Delta-9 THC is the most consistently intense experience. Consuming raw THCa without heat will not produce a psychoactive effect. Each has a distinct molecular structure and delivers a different experience.
An estimated 1.77 million UK adults still self-medicate with street-bought cannabis, with only around 100,000 having a legal UK medical cannabis prescription right now, despite medical cannabis being a fully legal treatment option since November 2018. Here is what the partnership means and how patients currently in treatment can get in touch. Valued at £200, all Releaf patients are able to order The Starter Kit through the patient portal to give them all the equipment they need to get their treatment started. For £39.99 per month, Releaf+ members are provided with a cost-effective, predictable way to manage medical cannabis treatment, and can buy medical cannabis flower from just £7.99 per gram.
Following inhalation — the concentration of THC in the brain surpasses that in the blood. For occasional users (the plasma half-life of THC is roughly between 1 and 3 days), while for chronic users, it ranges from 5 to 13 days.
