I have suffered from ulcerative colitis for nearly 20 years and take steroids to control it. Can you suggest any alternative treatment, as I am aware that taking steroids on a long-term basis can have serious side effects?

You should consult your GP before giving up your steroids treatment. Ulcerative colitis is when the immune system attacks and inflames the lining of the colon and rectum. Certain foods can aggravate it, so visit a nutritionist for advice and accurate food-sensitivity testing: Nutrition Associates Ltd (01904 691591, Nutrition Associates Ltd) has clinics around the country. Supplements that can help are fish oils, vitamins A, B, C, D and E, zinc, iron, calcium and folic acid. Take them in liquid form so they are easily absorbed. Probiotics will replace your gut's friendly bacteria, and herbs such as liquorice root will heal the ulceration.

I've suffered from backache for years following an injury. I am now pregnant and worried that it will get worse.

It is important to adopt good posture; don't wear high heels and sit up straight - a maternity girdle may help. Yoga for pregnancy is excellent for strengthening the muscles that support the spine (for a list of teachers, visit Birthlight), or try the video, Simple Yoga For Pregnancy, from Simple Yoga For Pregnancy.

Emma Mitchell is a natural health therapist. Send your questions to Wellbeing, Guardian Weekend, 119 Farringdon Road, London EC1R 3ER. Email: weekend@theguardian.com.