The signs: Experience low mood and reduced sex drive, with irregular or changing periods. The week before it starts you experience insomnia, headaches, fatigue and hot flushes.
The problem: You may be experiencing menopause , perimenopause (the lead-up to the menopause) or PMT. As levels of oestrogen and progesterone drop, women become more prone to insulin resistance. This can cause sugar cravings to soar, leaving you tired and irritable. As hormone levels change, the body attempts to raise levels of the feel-good hormone serotonin, and since sugar triggers a serotonin release, this can cause you to crave sweet things.
The solution: Cut down on sugar as much as possible . If you suffer from premenstrual tension, try taking vitamin B6 (200mg a day). This helps ease the deficiency of the "feel good" hormone prostaglandin E1 (when this hormone is low, irritability and sugar cravings can result).
If mood swings are a problem, it could be from excess sugar thats blocking your ability to turn a substance called GLA (gamma linoleic acid) into the DGLA (dihomo-gamma-linoleic acid) needed to produce prostaglandins that improve mood. Cutting out sugar allows your body to make prostaglandin more effectively.
Incidentally, it is important to be aware that modern physics considers momentum and energy to be parts of a single whole. Just as the 3 dimensions of space together with time make up a 4-dimensional spacetime, the 3 components of momentum together with energy make up a 4-dimensional momentum-energy tensor. Thus, conservation of momentum and energy are not separate laws. Conservation of momentum-energy is one law—represented by a single equation in 4-dimensional spacetime. The latest experiments have verified this law to within one part out of 10 15 .