When blood sugar in the body goes up, blood sugar is lowered by secreting insulin. Lycopene contained in a tomato has the effect to make insulin work better.
The best method to increase lycopene contained in a tomato to lower blood sugar is…
Storing a tomato at room temperature.
Why storing a tomato at room temperature is good?
Because storing a tomato at room temperature accelerates the ripening process which increases lycopene.
A tomato comes from South America originally, where the weather is warm so that a tomato doesn’t like the cold. Storing it in a refrigerator doesn’t accelerate the ripening process.
When you store a tomato, it is important to face the calyx of the tomato down because the flesh of the calyx side is thicker than the other side so that facing calyx down prevents bruising easily (Fig. 1 & 2).
Cooking a tomato increases the absorption of lycopene.