Q: Suddenly my hair seems to be falling out – I’m only 40. What could happen?

Connie R., Birmingham, Ala.

D There are several possible causes for hair loss. It can cause stress – or telogen effluvium or alopecia areata. Telogen influenza occurs when high levels of stress – and many stress hormones – push hair follicles into a state of relaxation and make them last longer than usual. Hair falls out but does not grow back. Alopecia areata occurs when your immune system attacks and destroys hair follicles. Chronic stress can control the immune system and can cause this to happen.

During this epidemic, people reported unexpected hair loss – associated anxiety was the cause of the problem. If that sounds like your experience, practice 1. Do 30 to 60 minutes of exercise most days – sweat that stress. 2. Meditate carefully – 10 minutes morning and night to learn to let go of stress. 3. Think speech therapy to learn new ways to respond to stressful situations. The good news is that your hair may grow back after stress levels are out of control.

Your diet can cause sudden hair loss. The hair-growth cycle is guided by the number of cells in each hair follicle. But when you eat a burning, fatty diet or are overweight, the stem cells are negatively damaged and instead of encouraging new hair growth, hair loss and thinning. According to a new study published in the journal Nature, a four-day high-fat diet for laboratory rats is enough to damage hair follicle cells and trigger hair loss. The same is true of some B vitamins, iron and zinc.

The best option is to have a blood test to check for malnutrition that can lead to hair loss and to avoid red and processed meats, saturated fats, added sugars and highly processed foods from your diet. Avocados, berries, fatty fish, legumes, nuts, and seeds provide good fuel for hair growth. When your body is healthy, so is your hair.

Q: I was told I had pre-diabetes and insulin resistance. I was very upset – but I had no other symptoms. What is insulin resistance?

Kerry R., Duluth, Mitch

D Insulin resistance means that your body is not responding to the hormone glucose, which is made up of beta cells in your pancreas to measure the effect of secretory food on your blood sugar. Insulin normally helps the cells in your body use glucose as fuel. When you can’t do that job, too much glucose stays in the bloodstream. That is why it is a sign of diabetes. Insulin resistance usually does not cause symptoms, and you are lucky your doctor has seen it. You can now take steps to restore your insulin sensitivity before the onset of complete diabetes.

But before we get there, you mentioned that you are feeling pretty blue. Well, a new study shows that there is a direct link between insulin resistance, pre-diabetes and depression. According to a study by Jimma Psychiatry, participants with high glucose levels are more likely to develop severe depression. The researchers looked at data from about 600 people and found that it works differently than two years after the onset of depression.

Depression responds positively to aerobic exercise; Speech therapy is also very useful. Treatment combined with these methods can help many people. And reversing your insulin resistance – there are proven ways – can provide a positive solution to both problems.

We recommend that you follow a variety of fruits and vegetables and a vegetarian diet, including red and processed meats and white flour (bread, baked goods, pasta, snacks) and greens that provide 100 percent whole grains. Almonds – especially walnuts.

Talk to a doctor. Oz and Roizen at sharecare.com.