As we all know, smoking is the first killer of health. In fact, even if you don't smoke, some unhealthy habits in your life are no less than smoking.

Now let's know what these nine bad habits are:

1. Sitting all day

sitting in the office or car for a long time will lead to various health diseases. Even regular exercise can't offset the danger of sitting for too long.

A new study by Alberta Health Service and Cancer Health Center in Canada found that nearly 161,111 patients with breast cancer, colon cancer, prostate cancer and lung cancer get sick every year due to lack of exercise, but only two thirds of them are caused by smoking.

At work, we should get into the habit of getting up and walking often. At home, we should also do more exercise.

2. No oil smoke

A new study published in the journal of American Environmental Health Outlook found that when using gas stoves, poor ventilation will lead to a serious surplus of carbon monoxide, nitrogen dioxide and formaldehyde in the room. These three pollutants are common in secondhand smoke.

No matter frying or cooking, as long as the gas stove is used, the range hood will be turned on, which will reduce pollution by 61% ~ 91%.

3. Eating too much meat

Animal protein contains growth hormone igf-1, which can promote the growth of cancer cells.

A new study published by the University of Southern California in the American Journal of Cell Metabolism found that the cancer mortality rate of middle-aged people who eat a lot of animal protein is four times that of their peers. But for people over 65, there will be no harm.

Some animal proteins should be replaced by plant proteins such as legumes. Middle-aged people should supplement protein according to their weight every day, and add 1.8 g every 2 pounds (1.9 kg).

4. High-temperature fried food

Some studies show that acrolein and a large number of polycyclic aromatic hydrocarbons will be produced when the temperature of edible oil is too high. These carcinogens also exist in cigarettes, which are easy to cause respiratory inflammation. Use more olive oil to avoid overheating when cooking.

5. Long-term sleep deprivation

Long-term sleep deprivation can lead to hypertension, heart disease, stroke, obesity and other health problems. Studies have found that sleeping less than 6 to 7 hours a night will lead to an increase in mortality, which is equivalent to the mortality rate of smoking. In addition, lack of deep sleep and circadian rhythm disorder can also accelerate the growth of tumors, and ensuring adequate sleep for 7 to 8 hours a day is very important for health.