There is also a vast difference between suffering from being a Christian in this world and being rejected by others and being persecuted in it's many forms and suffering because of a sickness or disease that this corrupt world has brought, we have brought upon ourselves, or the devil has put on us.
These are 2 completely different kinds of sufferings or tribulations or pressures.
Actually the word in Romans 5:3 is "tribulations".
Romans 5:1-5 (NASB)
[SUP]1 [/SUP] Therefore, having been justified by faith, we have peace with God through our Lord Jesus Christ,
[SUP]2 [/SUP] through whom also we have obtained our introduction by faith into this grace in which we stand; and we exult in hope of the glory of God.
[SUP]3 [/SUP] And not only this, but we also exult in our tribulations, knowing that tribulation brings about perseverance;
[SUP]4 [/SUP] and perseverance, proven character; and proven character, hope;
[SUP]5 [/SUP] and hope does not disappoint, because the love of God has been poured out within our hearts through the Holy Spirit who was given to us.
Here is how the Greek word for "tribulations" which some translation use "sufferings" has been used by Jesus Himself.
Matthew 24:9 (NASB)
[SUP]9 [/SUP] "Then they will deliver you to tribulation, and will kill you, and you will be hated by all nations because of My name.
Here Jesus use of the Greek word was translated "afflictions"
Matthew 13:21 (NASB)
[SUP]21 [/SUP] yet he has no firm root in himself, but is only temporary, and when affliction or persecution arises because of the word, immediately he falls away.
Matthew 24:21 (NASB)
[SUP]21 [/SUP] "For then there will be a great tribulation, such as has not occurred since the beginning of the world until now, nor ever will.
Here is Luke using the same Greek word and it is translated as "persecution".
Acts 11:19 (NASB)
[SUP]19 [/SUP] So then those who were scattered because of the persecution that occurred in connection with Stephen made their way to Phoenicia and Cyprus and Antioch, speaking the word to no one except to Jews alone.
Here is Paul ( Luke still writing it ) using the same Greek word and it is translated as "afflictions".
Acts 20:23 (NASB)
[SUP]23 [/SUP] except that the Holy Spirit solemnly testifies to me in every city, saying that bonds and afflictions await me.
Here Paul uses the word to show that we can comfort others with the same comfort God brings to us when they are in tribulation, afflictions, persecutions for the word of God and the gospel's sake.
2 Corinthians 1:4 (NASB)
[SUP]4 [/SUP] who comforts us in all our affliction so that we will be able to comfort those who are in any affliction with the comfort with which we ourselves are comforted by God.
Here is really good news for all of us - no matter what the world, the devil or by our own stupidity and circumstances are thrown at us in this world - it will never separate us from the love of God for us. Romans 8:35
So, as we can see - the word for "tribulations" or some translations have as "sufferings" have no connection to diseases at all.
We will have tribulation in this world and that is a part of the sharing of the sufferings/tribulations/persecutions of Christ in the flesh as Paul talks about it. Col. 1:24
There are brethren in other countries right now suffering in many ways because of Christ being in them.
Some lose their heads and these are standing before their loving Father full of life and complete and whole and one day they will have a redeemed natural body again just like the rest of us. Thank you Jesus!