It isn't. Last year average lifespan dropped. But the general increase or stability in lifespan is equal BOTH better medical miracles and an increase in diseases. So people may be living longer, but it's with diabetes or horrible allergies or fibromyalgia or tumors or whatever, and have to constantly have medical intervention.
And the gene-spliced seeds are now being traced to health problems, drops in fertility, etc etc. There's a whole swath of India being called the "suicide belt" because traditional farmers who switched to GMOs are going under and suiciding because there's no other choice. And guess who owns the land when it's sold to pay debts?
Prince Charles has gotten involved. He's really concerned about the problems of GMOs have. Can you believe that these things were not tested before they were let into OUR FOOD?
The sad part? It isn't even necessary. Instead of taking fish genes and splicing them into peonies to get what they want, there's a new process of gene-typing all related plants and figuring out what closely-related plant has the qualities they do want, and then breeding them together. This has been done with many Tomatoes, breeding them with native Lypersocum varieties, with great success. It's not any more expensive or longer, but not something the companies want to do because that would make obsolete a lot of really expensive tools.
The sadder part is that existing GMO plants are messing up the typing+breeding process mentioned above.
Makes me angry and sad. I hope that the current decline in human and animal fertility (industrial nations are seeing a reduction of fertile sperm by 30% across the board in all continents) is reduced soon.