We are given counsel in God's Word of the importance of our bodies and health. In Deuteronomy 14:1-21, God provides specific instructions and warnings about what the Israelites were to eat. Most of these were commands He gave them in order to keep them from eating harmful foods that could adversely affect their health. Some of the commands were given so they wouldn't imitate the diet and practices of the idolatrous people around them.
The Bible also addresses the importance of moderation as our diet is concerned. We are admonished in Proverbs 23:20-21, to avoid over eating as well as excessive drinking. Gluttony not only has the potential to jeopardize our health but also become an idol in our lives. We begin living to eat, instead of eating to live. It is our responsibility to exhibit self-control in all areas which brings balance to the whole man.
By studying God's plan for our lives, we learn that we should not do anything that is not meant for our good, even if it is not expressly forbidden in the scriptures. For example, The Bible doesn't say, "Thou shalt not smoke". However, scientific evidence has proven the harmful effects of smoking. It is in opposition to God's health laws and principles to ingest things that result in bodily harm. Smoking is something that can bring a person into bondage, as many people find it almost impossible to quit.
Other examples are coffee, tea and soft drinks. Just like the issue of smoking, there is no direct prohibition here either. However,Carbonated beverages have the potential to damage kidney cells which can compromise the body's natural cleansing method and some soft drinks contain habit-forming caffeine. And It has been discovered that decaffeinated coffee is not entirely free of poisons. Tea contains tannic acid which when consumed in large amounts can cause stomach irritation and liver damage.
1 Corinthians 10:31 provides the proper perspective on food and drink. It states, "So whether you eat or drink, or whatever you do, do it ALL to the glory of God". Let us therefore serve God with our heart, mind, soul and body..... serving Him in All things.
While nothing in the Bible specifically addresses obesity and weight loss, Paul tells us in 1 Corinthians 6:19-20, that our bodies are temples of the Holy Spirit and such we are to take care of our bodies and keep them healthy. Because obesity leads to multiple health risks, it is up to us to choose the right amount of food, drink and exercise to strive to avoid becoming overweight. A strong, healthy body helps us stay in shape so we can be better servants in the kingdom of God.