Top 10 High THC Cannabis Strains

The percentage of THC in cannabis varies greatly depending on quality, ranging anywhere from 1% – 8% for low grade cannabis, 8% – 16% for mid grade, and 17% – 24% for high grade. THC or Tetrahydrocannabinol is the principal psychoactive constituent of cannabis. Cannabinoid receptors are concentrated in certain areas of the brain associated with thinking, memory, pleasure, coordination and time perception. THC attaches to these receptors and activates them and affects a person’s memory, pleasure, movements, thinking, concentration, coordination, and sensory and time perception.