A normal oxygen level for a 70 year old person is around 95 percent.
The normal oxygen saturation level for a 70 year old person and other adults i between 97 percent to 100 percent and older adults will usually have lower levels of oxygen when compared to younger adults.
If someone is older than 70 years of age then a normal oxygen level can be around 95%.
Low oxygen levels can be dangerous if the oxygen levels in your body get way too low.
The normal oxygen level reading should be between and in a range of 75 to 100 millimeters of mercury (mm Hg)
If your oxygen level drops slightly below that level then there's likely not a serious health issue and you likely have nothing to worry about.
But when your oxygen levels get way too low then it can cause serious health issues and may even cause death and brain damage.
If you think your oxygen levels are too low then you need to see a doctor or go to urgent care for treatment to get your oxygen levels back up.
You may need to use oxygen to breathe properly if your oxygen levels drop way too low or stay too low.
Oxygen levels can sometimes drop a little which is normal but they should not drop a whole lot.