She has less energy and less interest in lovemaking even though our relationship has never been better. She claims this is just how a woman is in her 40s and that I would not understand because I'm in my early 30s. Many people chronically get less sleep than they need. Someone with a moderate sleep debt who then starts sleeping even less can quickly get exhausted. At 44, she could be nearing or entering menopause.
Some women ovulate irregularly for months or years before menopause.
Although they may be making enough estrogen, the irregular ovulation can cause heavier periods and anemia, which leads to tiredness. Thyroid problems, which are also common, can cause fatigue and anemia, even mimicking signs of menopause. Simple blood tests can screen for all these problems. Depression affects up to 10 percent of the population at some time in their lives, and two common symptoms are tiredness and loss of interest in sex. There is increasing evidence that chemical imbalances in the brain cause depression.