Vani dosh and Its Remedies

Vani Dosh - Does Your Speech Turn People Away? Sometimes, we may not be able to convey what we're thinking and end up saying things that we did not intend to say. This shows a lack of coordination between the body and the brain. This weakness also comes up in one's writing, relationships, and other spheres of one's life where the body does not carry out the thoughts approved by the brain. For example, the brain says that although the person has made a mistake, just give him a small warning and let him go. But as you start talking, you turn the small warning into a big threat. This is the kind of problem that is caused by a certain kind of vani-dosh. Sometimes when you start talking, the listener may ask you to be quiet as they feel offended by something you said. Some people and children alike do not have control over their tongue and end up saying things that turn out to be very hurtful to others. These are all signs of vani-dosh or the problems arising from bad speech. 
Causes:
The combination of Rahu and Mercury makes one say things in a manner that causes the listener to be hurt by them. The Sun causes one to lose control over what one says and say things that causes relationships to turn sour, but this happens when one says things in anger. Mars also causes vani-dosh/ problems with speech. It will make one talk in a very straightforward manner that one will forget his own principles. Shani makes one speak in an abusive manner. 
People with Mars and Ketu's Negative Effects:

Have a tendency to tell lies
 - such individuals like to make others fight
 - this combination makes the person egoistic
 - the life of such people goes through a lot of ups and downs in life.
 - such individuals are not able to get the joy of a married life 
- they always have some kind of major accident in life. 
- their old age is very bad - do not get the support of their children or siblings 
- they do not care about their home, place of worship, or their guru.
 -  at some point, the voice quality goes bad 
- high-pitched and rough sounding. 
- they have a habit of saying "I will tell it like it is" or "I will say it clearly"...

Remedies
immediate change in behavior to get rid of the negative tendencies mentioned above 
do rudra-abhishek 
do "purush-sookt" jap 
never lie or criticize anyone 
wear a solid silver ball in a chain or in a white thread around the neck care for the temple, guru, and cows - to take the help of Jupiter to get rid of the negative effects of Mars. 
never eat very spicy, non-vegetarian, or very rich food.