In most countries of the world, marijuana, or cannabis, is hemp, which is used for medical or narcotic purposes, and hemp is a technical agricultural crop. In fact, this is one plant that is processed and applied in different ways. Hemp contains almost 500 active ingredients, 80 of which are called cannabinoids. It is these substances that affect our receptors, the nervous system and the brain.
Most often, two types of cannabinoids (substances that are released during the processing of marijuana) are used in cosmetic production – THC (tetrahydrocannabinol) and CBD (cannabidiol directly). The first one, tetrahydrocannabinol, is responsible for drug intoxication, therefore its concentration in products and cosmetics is no more than 3%. Although it has calming properties, even in America it is forbidden to bring drugs containing a higher percentage of THC to a state where marijuana is not legalized.
At the same time, you can find funds with CBD in any roadside store across America and even in many European countries. And cannabidiol itself is obtained from hemp crops, extracting a substance from its flowers and buds, as well as an extract of seeds and hemp oil. It can be purchased for children in the form of cbd infused gummies.
Marijuana for Glaucoma
Many traditional treatments for eye diseases are highly invasive and often have a temporary effect. Therefore, some people suffering from ailments of the visual system resort to alternative therapy. Patients have high hopes for hemp and suggest that the plant eliminates the symptoms of two eye diseases.
The use of cannabis in the treatment of glaucoma
In the 1970s, it was proven that THC reduces intraocular pressure, a factor that leads to the development of glaucoma. In a study published in the British Journal of Ophthalmology, it is indicated that the effectiveness of a substance is due to its neuroprotective property. However, scientists note the negative aspects of the use of THC:
- cannabinoid causes unwanted cognitive changes;
- with prolonged use, tolerance develops;
- the effect lasts from three to four hours.
Henry Jampel, a professor of ophthalmology at Johns Hopkins University, does not recommend taking THC for the treatment of glaucoma due to side effects and short-term effects. CBD is also not suitable for the role of an effective means to combat the disease. According to the results of clinical trials conducted on mice in 2018, cannabidiol increases intraocular pressure, while in males, the pressure increases twice as much as in female rodents.
Hemp against macular degeneration
The macula is the central part of the retina that is responsible for focusing vision. When macular degeneration occurs, a person begins to see a “blind spot” in the center, but peripheral vision remains unchanged. Standard methods of treatment involve the administration of drugs inside the eye to reduce the concentration of vascular endothelial growth factors (VEGF is a signaling protein produced by cells to stimulate the formation of the vascular system). These medicines have serious side effects, so they may not be suitable for all patients.
In the course of research on the effects of cannabinoids on brain cancer, scientists found that THC blocks the production of VEGF and inhibits their activity. CBD helps eliminate the cause of macular degeneration due to its anti-inflammatory effect. Nevertheless, experts have not yet evaluated the effectiveness of cannabinoids in the treatment or prevention of macular degeneration during clinical trials, so the potential of THC and CBD remains at the theoretical level.