Modern Day Spirit of the Law
As a result, in our modern world, the religious organizations who use Joseph's Smiths words as scriptural laws have missed the spirit of the information he was given; to take care of your body and nourish it with vibrant and healthy food, water, and air because the quality & vibrancy of your spiritual energy is dependent on the quality of what you consume. After all, food is one of the tools for spiritual development.
If those religious organizations were following the spirit of the law, they would be up-in-arms and assuring waters would be protected, chemicals and pesticides would not be used in farming, and genetically modified foods would be banned.
Personal Spiritual Guidance
But now that we are moving in an era where people will be trusting their own internal guidance instead of relying on institutions for what to believe and do, we will start to see more people following their impressions and internal promptings. This will result in more people following the spirit of the laws, including what they can and should eat and drink.