Hello and welcome.
pyorrhoea..commonly known as gum disease is a bacterial infection.
Slowly and steadily, it weakens the teeth by dissolving the gum.It breaks down the healthy gum tissues and accumulates the pus around the teeth.

In turn teeth becomes loose and gets mobile,and then falls of over a period of time,if not treated.Accompanies bad odor from mouth too.

Any patient having even slightest bleeding from gum should and must report to his/her dentist for at least a dental check up.

After that as per diagnosed treatment is administered.
Therefore please ask your friend to see his dentist soon for further help.
Thanks.
Take care.

Hi
A lot of association about general and oral heakth have been studied so far .
first ,the gums : they are a part of support system to your teeth . their health is essential for a healthy anchorage of your teeth and also prolonged untreated bacterial accumulation in the same can have effect on your systemic health and present as fever,malaise etc. Since the anchorage of your teeth might be compromised so will be the levelling or what we call as occlusion can be compromised ,which in turn has adverse effect on your TM JOINT . Any tm joint imperfection or slight imbalancing can lead to various symptoms of clicking ,jaw pain ,pain in tooth radiating to head , headaches and many more .
This was my attempt to give you a brief insight of plently of problems that can arise due to bad oral health .
i advice you to go to an oral physician and get a proper evaluation of your oral health condition to rule out any other possibilty .
take care .