There is a lemon tree growing near my condo. Last time I was here it had a few lemons on. They are juicy. Lemons in Panama are green! Now the tree is so laden down with fruit it has cascaded to the ground.
Here is my recipe for a long life. First thing after you get out of bed, warm up a cup of fresh water to lukewarm. Squeeze the juice of a lemon into it. Add a teaspoon of cold pressed olive oil. Drink it down quickly.
If you don't have access to fresh lemons, use commercially available lemon juice in a bottle. Cheers!