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The science wasn’t used much here.

Despicable.

My child gets forced to wear a mask over my dead body.
It's not science that's made you think this way.
It's a psy-op.
Common sense should tell you the mask compromises one's intake of oxygen and if this lunacy continues, your respitory function will fail.

Why point the finger at others? They're just breathing. You're a human too, aren't you?

My 85 year old Uncle had his first vaccination today! Another one on January 6th. All good.

My 85 year old Uncle had his first vaccination today! Another one on January 6th. All good.

My old chap could do with an injection. Are they still available on the nhs?

Rather than a common sense lesson, here's a science lesson for you. Not that it'll make any difference to you, in your hyper paranoid, indoctrinated little world.
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'Paper face masks and fabric face coverings are permeable to air but restrict the movement of water droplets that we exhale or sneeze. The two key gases for respiration, oxygen and carbon dioxide, can move freely across these materials.

What might a face mask do? There has been discussion that a face mask might add to anatomical dead space by extending it beyond the mouth area. If everything else stays the same, an extra 20 ml say, of dead space, theoretically will reduce the percentage of oxygen at the alveolus, but the effect is very small, meaning that blood still would stay fully saturated with oxygen.

Oxygen in the blood equilibrates with oxygen in our alveoli. Blood is maximally saturated with oxygen when alveolar oxygen is 13-15%. This means this means that all the all the oxygen binding sites on haemoglobin (which makes our blood red) are occupied. So even if more oxygen were available, blood saturation with oxygen does not increase. Furthermore, the relationship between % oxygen and blood saturation is not linear, oxygen levels would need to halve to reduce saturation to 90%.

What might a face mask do? There has been discussion that a face mask might add to anatomical dead space by extending it beyond the mouth area. If everything else stays the same, an extra 20 ml say, of dead space, theoretically will reduce the percentage of oxygen at the alveolus, but the effect is very small, meaning that blood still would stay fully saturated with oxygen.

Think about how many people go swimming with snorkels, how much dead space this adds and how it has remarkably little effect on our activities.

So, does a face mask restrict flow of air into the lungs? The bottom line is, if used correctly, it does not. If airflow is restricted, less millilitres of oxygen get to the alveoli, and less carbon dioxide is exhaled. While this reduces the percentage of oxygen in our lungs, and increases carbon dioxide, the body senses these changes in the lungs and stimulates breathing.'
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Essentially, oxygen only becomes an issue if wearing a respirator, n95 mask or something else medical grade that is tightly sealed and significantly difficult to breathe through. Every other 'retail available' mask type which is fabric based should not cause any oxygen deficiency, even if worn for extended periods of time.

However as mentioned, cloth masks are useless. Multi-layered/filter based, anti-microbial fabric masks are the way to go.

Edited by SW19 CPFC (10 Dec 2020 5.47pm)