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Science and Technology Daily, December 12th news:
After years of research, the Russian Academy of Sciences' Institute of X-ray Radiology and Toxicology has discovered that smoking leads to the occurrence of tumor diseases in the body, not only because tobacco contains carcinogens, but also because smoking exacerbates the accumulation of heavy metals such as cadmium in the body. These heavy metals can damage and affect the repair and recovery of damaged DNA within cells.
Researchers selected several hundred volunteers aged from 10 to 90 years old, and after analyzing their blood, they reached the above conclusion. These volunteers had no previous exposure to heavy metals. Among them, smokers consumed between a few cigarettes to a pack a day, while others had never smoked. The researchers used atomic absorption spectrometry to measure the levels of heavy metals lead, cadmium, and manganese in the volunteers' blood and studied the damage caused by gamma rays to the DNA of white blood cells in the blood.
The study found that as age increased, the levels of all three heavy metals in the blood of all subjects increased. Generally, lead accumulates the most in the body, followed by manganese, and cadmium the least; men accumulate more lead than women, while women accumulate more manganese than men. However, smokers had twice the levels of all three heavy metals compared to non-smokers. It was also found that gamma rays caused more damage to the white blood cells of smokers than to non-smokers, a result of excessive cadmium in the body damaging the DNA repair system.
Researchers pointed out that the harmful effects of cadmium are far more extensive. Cadmium oxide, which enters the lungs with smoke, can be carcinogenic. Additionally, cadmium is difficult to excrete from the body and accumulates in the lungs, kidneys, and gastrointestinal tract. Tobacco leaves accumulate cadmium salts from the soil more than other plants; the cadmium content in tobacco leaves is many times higher than the permissible level.
Researchers believe that the harm caused by smoking 20 cigarettes a day is equivalent to the effect of 3.2 micrograms of cadmium, posing the same risk to passive smokers. The increase in other toxic metals in the body is also detrimental to human health. Excessive manganese in male smokers stimulates DNA-damaging activity, while lead increases the body's sensitivity to radiation, shortens lifespan, and causes early onset of age-related diseases. Additionally, excessive lead in the body affects the function of the motor system, has adverse effects on vision, hearing, and memory, and even increases aggressiveness. Some researchers also believe that increased lead levels in the blood lead to high blood pressure and impair kidney function.
Source: http://www. takungpao. com/ news/ 06/ 12/ 12/ YM- 664220. htm
Russia Uncovers New Evidence of Smoking's Health Risks
After years of research, the Russian Academy of Sciences' Institute of X-ray Radiology and Toxicology has discovered that smoking leads to the occurrence of tumor diseases in the body, not only because tobacco contains carcinogens, but also because smoking exacerbates the accumulation of heavy metals such as cadmium in the body. These heavy metals can damage and affect the repair and recovery of damaged DNA within cells.
Researchers selected several hundred volunteers aged from 10 to 90 years old, and after analyzing their blood, they reached the above conclusion. These volunteers had no previous exposure to heavy metals. Among them, smokers consumed between a few cigarettes to a pack a day, while others had never smoked. The researchers used atomic absorption spectrometry to measure the levels of heavy metals lead, cadmium, and manganese in the volunteers' blood and studied the damage caused by gamma rays to the DNA of white blood cells in the blood.
The study found that as age increased, the levels of all three heavy metals in the blood of all subjects increased. Generally, lead accumulates the most in the body, followed by manganese, and cadmium the least; men accumulate more lead than women, while women accumulate more manganese than men. However, smokers had twice the levels of all three heavy metals compared to non-smokers. It was also found that gamma rays caused more damage to the white blood cells of smokers than to non-smokers, a result of excessive cadmium in the body damaging the DNA repair system.
Researchers pointed out that the harmful effects of cadmium are far more extensive. Cadmium oxide, which enters the lungs with smoke, can be carcinogenic. Additionally, cadmium is difficult to excrete from the body and accumulates in the lungs, kidneys, and gastrointestinal tract. Tobacco leaves accumulate cadmium salts from the soil more than other plants; the cadmium content in tobacco leaves is many times higher than the permissible level.
Researchers believe that the harm caused by smoking 20 cigarettes a day is equivalent to the effect of 3.2 micrograms of cadmium, posing the same risk to passive smokers. The increase in other toxic metals in the body is also detrimental to human health. Excessive manganese in male smokers stimulates DNA-damaging activity, while lead increases the body's sensitivity to radiation, shortens lifespan, and causes early onset of age-related diseases. Additionally, excessive lead in the body affects the function of the motor system, has adverse effects on vision, hearing, and memory, and even increases aggressiveness. Some researchers also believe that increased lead levels in the blood lead to high blood pressure and impair kidney function.
Source: http://www. takungpao. com/ news/ 06/ 12/ 12/ YM- 664220. htm