CBSE Class 10 Science 2020 Outside Delhi Set 1

Question : 4

Total: 30

Question numbers 4(mathrm‌a) to 4(mathrm‌~d) are based on table given below. Study the table in which the levels of Thyroid Stimulating Hormone (TSH) in women are given and answer the questions that follow on the basis of understanding of the following paragraph and the related studied concepts.

Age Range	Normal (mU∕L)	Low (mU∕L)
18−29 years	0.4−2.34‌mU∕L	<0.4‌mU∕L
30−49 years	0.4−4.0‌mU∕L	<0.4‌mU∕L
50−79 years	0.46−4.68‌mU∕L	<0.46‌mU∕L

Women are at greater risk for developing abnormal TSH levels during menstruation, while giving birth and after going through menopause. Around 5% of women in the United States have some kind of thyroid problem compared to 3% of men. Despite claims that high TSH increases your risk for heart disease, a 2013 study found no link between high TSH and heart diseases. But a 2017 study showed that older women are especially at risk for developing thyroid cancer if they have high TSH levels along with thyroid nodules.
(a) A 35 year old woman has TSH level 6.03 mU∕L. What change should she bring in her diet to control this level?
(b) When do women face a greater risk of abnormal TSH level ?
(c) State the consequence of low TSH level.
(d) Name the mineral that is responsible for synthesis of hormone secreted by thyroid gland.

Solution:

(a) Maintaining the level of omega-3 to omega-6 fatty acids in the diet could help healthy neurological functions and reduce inflammation. Wild fish such as mackerel, salmon and sardines are among the best sources of omega- 3 s to develop an improved immune system. Diet with protein rich food can help to reduce symptoms of thyroid imbalance.
(b) Women are at greater risk for developing abnormalTSHlevelsduringmenstruation, when giving birth and after going through menopause.
(c) Low TSH levels indicatehyperthyroidism. This is also known as an overactive thyroid.
Symptoms of hyperthyroidism include:
(i) An irregular or rapid heartbeat.
(ii) Weight loss, eye or vision changes.
(iii) Palpitations, rapid heartbeat, shakiness, sweating, feeling 'hot'.
(iv) Diarrhoea, stomach and bowel abnormalities or anxiety.
(v) Insomnia (trouble sleeping), fatigue, weakness or hair loss.
(d) Iodine is the most well-known mineral for thyroid health. It is essential for the thyroid to build T4 and T3 hormones.

Go to Question:

Prev Question

Next Question