Yes they very are
When sick people are treated with radiation, that does not make them radioactive. Radiation is dangerous, but radiation patients are not.
Any electromagnetic radiation can be dangerous. Alpha waves are higher on the radiation scale than x-rays so yes, they are dangerous.
The electromagnetic spectrum is a continuum. The least energetic type of radiation may be found in what is known as "extremely low frequency" radiation (ELF). This is radiation with a frequency in the range 3-30 Hertz. ELF radiation can penetrate seawater and so is particularly useful for communicating with submarines.
EXTREMLY
It is potentially dangerous. The radiation level found in granite is enough to suppress the immune system, cause birth defects, and cause cancer. There are granite composite options which are not containing the level of radiation that is dangerous.
Radiation is the emission of energy in the form of waves or particles. It can be dangerous because it can damage cells and DNA in the body, leading to health problems such as cancer and radiation sickness.
Other than Japan most countries haven't been majorly affected by radiation at dangerous levels.
Radiation therapists have a potentially dangerous job since they work with radioactive materials, however, there are numerous safety procedures, and if followed correctly, the job is not particularly dangerous. The median yearly salary for a radiation therapist in the U.S. is $74,813.
The most dangerous type of radiation is Nuclear radiation which is the one that should be most worried about.
Externally, gamma radiation is dangerous because it can penetrate the body. Alpha is most dangerous if ingested.
Gamma radiation is the most penetrating and dangerous form of radiation. It can travel long distances through air and penetrate materials easily, which makes it more hazardous to human health.
Ionizing radiation is the most dangerous type of radiation because it has enough energy to remove electrons from atoms, leading to damage in cells and DNA, which can cause serious health effects like cancer.